Journal articles: 'TiAlN'

1

Zhang, Jun, Jia Jing Cai, Wei Zhao, and Zheng Gui Zhang. "Microstructure and Mechanical Properties of TiAlON/TiAlN/TiAl Films." Applied Mechanics and Materials 628 (September 2014): 93–97. http://dx.doi.org/10.4028/www.scientific.net/amm.628.93.

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TiAlON/TiAlN/TiAl hard films are prepared by multi-arc ion plating technology using the Ti-50Al (at%) alloy target. The high speed steel (HSS) is adopted as substrate. The surface and cross-fracture morphology, the surface and cross-fracture compositions and the phase structures of the as-deposited TiAlON/TiAlN/TiAl hard films are observed and measured by scan electronic microscope (SEM), energy dispersive spectroscopy (EDS) and X-ray diffraction (XRD). The mechanical properties, including micro-hardness and adhesive strength between film and substrate, of the as-deposited TiAlON/TiAlN/TiAl hard films are investigated. The effects of oxygen partial pressure on the as-deposited films are discussed. It is revealed that the increase of oxygen decreased liquid droplets distribution density to some extent, caused complicated phase structure. Nevertheless, the good adhesive strength and the improved hardness with a maximum of 3900HV are achieved.

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Huang, Hao, Zhen Xi Li, Min Juan Wang, and Chuan Xie. "Microstructural and Mechanical Properties of TiAlN and Ti₃AlN Films Deposited by Reactive Magnetron Sputtering." Materials Science Forum 816 (April 2015): 283–88. http://dx.doi.org/10.4028/www.scientific.net/msf.816.283.

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Two series of TiAlN and Ti3AlN films have been deposited on Si (100) substrates by reactive magnetron sputtering TiAl and Ti3Al targets in Ar/N2 mixture. The effects of incoming ions energies controlled by Vb on the microstructure, morphologies, residual stress and hardness have been explored by XRD, SEM, AFM, surface profiler and nanoindentation. The results showed that single phase cubic Ti-Al-N solid solubility formed by Al atoms replacing some Ti atoms in the cubic TiN lattice occured in both TiAlN and Ti3AlN films. As substrate bias increased, the preferred orientation firstly changed from (111) to (200), and then returned to (111) at higher substrate bias. At the same time, high substrate bias promoted the densification of films and presence of high compressive stress, which is benefit for improvement of hardness.

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Wiesing, M., T. de los Arcos, M. Gebhard, A. Devi, and G. Grundmeier. "Analysis of dispersive interactions at polymer/TiAlN interfaces by means of dynamic force spectroscopy." Physical Chemistry Chemical Physics 20, no. 1 (2018): 180–90. http://dx.doi.org/10.1039/c7cp05373h.

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4

Chang, Yin Yu, Da Yung Wang, and Chi Yung Hung. "Mechanical Properties of TiAlN/CrN Nanolayered Coatings Synthesized by a Cathodic-Arc Deposition Process." Solid State Phenomena 118 (December 2006): 323–27. http://dx.doi.org/10.4028/www.scientific.net/ssp.118.323.

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TiAlN, and TiAlN/CrN nanolayered coatings were synthesized by cathodic-arc evaporation with plasma enhanced duct equipment. Chromium and TiAl (50/50 at %) alloy cathodes were used for the deposition of TiAlN/CrN coatings. The effects of bilayer thickness and chromium content on the microstructure and mechanical properties of TiAlN/CrN nanolayered coatings were studied. The preferred orientation was changed from (200) in TiAlN monolayered coatings to (111) plane in the multilayered TiAlN/CrN coatings. The multilayered TiAlN/CrN coating with periodic thickness of 20 nm and the smallest crystallite size of 28 nm exhibited the highest hardness of 39 GPa. The multilayered TiAlN/CrN coatings also showed the best adhesion strength using scratch tests. It has been found that the structural and mechanical properties of the films were correlated with the addition of chromium and nanolayer thickness.

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Wang, Xuan, Kui Zhang, Guang Hui Yue, Dong Liang Peng, Zheng Bing Qi, and Zhou Cheng Wang. "Investigation on the Structure and Properties of TiAlN Coatings Deposited by DC Reactive Magnetron Sputtering." Advanced Materials Research 154-155 (October 2010): 1639–42. http://dx.doi.org/10.4028/www.scientific.net/amr.154-155.1639.

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TiAlN coatings have been deposited by reactive magnetron sputtering from TiAl alloy target using a direct current (DC) power source. The crystal structure, chemical composition, surface morphology and hardness of TiAlN coatings which were prepared at various N2 flow rates have been systemically investigated. The results show a strong effect of N2 flow rates on the orientation, grain size and densification in TiAlN coatings. The TiAlN coating shows the highest hardness at a certain N2 flow rate when it has the most compact structure.

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6

Chang, Chi Lung, Jui Yun Jao, Wei Yu Ho, and Da Yung Wang. "Characteristics of TiAl-Doped DLC/TiAlN/TiN Multilayered Coatings Synthesized by Cathodic Arc Evaporation." Solid State Phenomena 118 (December 2006): 247–56. http://dx.doi.org/10.4028/www.scientific.net/ssp.118.247.

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The combinations of TiAl-doped DLC and TiAlN/TiN layers were designed to deposit on the tool steels using cathodic arc evaporation in a continuously single batch process. The economic advantage in depositing the combined coating in one production scale of PVD system is of practical importance. The TiAl-doped DLC as lubricant coatings were synthesized by using arc plasma sources mounted with Ti50Al50-target to emit high energy ion plasma to activate the decomposition of acetylene reactive gases. The results show that the TiAl-doped DLC and TiAlN/TiN combined coatings retained lower friction coefficient at approximately 0.15 during the steady-state sliding. The lubricity and wear resistance of TiAl-doped DLC/TiAlN/TiN coatings is then demonstrated to potentially be applied to the cutting tools with no lubricants.

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Tomasz, Dudziak, Alasdair Wilson, Haifa G. Ahmad, and Psantu K. Datta. "Studies of the Effectiveness of Certain High Performance Coatings in Preventing Hot Corrosion Degradation of Ti-Aluminide Alloys." Defect and Diffusion Forum 289-292 (April 2009): 437–45. http://dx.doi.org/10.4028/www.scientific.net/ddf.289-292.437.

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This paper originates from a large EU programme designed to produce high performance coatings with superior mechanical and corrosion resistance properties to enhance high temperature corrosion behaviour of TiAl based alloy (Ti45Al8Nb).The paper here is concerned with studies of the hot corrosion behaviour of Ti – Aluminide alloys (Ti45Al8Nb mainly -TiAl with small amount 2 (Ti3Al)) coated with three coatings: (1) TiAlYN/CrN coating, (2) CrAl with 2%YN addition [1,2] (3) TiAlN with Al2O3 overlayer. Hot corrosion was induced by spraying salts mixture of 80%Na2SO4/20%NaCl with melting point around 700oC [1] [2] on heated sample surfaces, and subsequently heating the sprayed samples in a furnace at 750oC for various times. The extent of degradation, assessed by weight changes and examination by OM (Optical Microscope), SEM (Scanning Electron Microscope), and EDX (Energy Dispersive X-Ray Analysis) indicated that all samples suffered hot corrosion attack to various degrees. TiAlN with Al2O3 overlayer had the best corrosion resistance.We shall discuss these results within a mechanistic framework of hot corrosion degradation and describe their implications.

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Chun, S. Y., Chung Hyo Lee, and Sang Jin Lee. "Properties of TiAl and TiAlN Thin Films by Pulsed Cathodic ARC." Materials Science Forum 534-536 (January 2007): 1413–16. http://dx.doi.org/10.4028/www.scientific.net/msf.534-536.1413.

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TiAl and TiAlN thin films are deposited on glassy carbon and Si substrates by the pulsed cathodic arc deposition process. In our pulsed cathodic arc system, because the spatial position of plasma on the surface of the evaporation source can be controlled by pulsed arc discharge, the thickness of the TiAl and TiAlN films can be controlled at nanometer scale. Amorphous stoichiometric Ti-Al films are synthesized from one Ti-Al alloy target at room temperature by changing the number of pulses of the arc discharge.

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9

Ben Cheikh Larbi, A., and B. Tlili. "Fretting wear of multilayered PVD TiAlCN/TiAlN/TiAl on AISI 4140 steel." Surface and Coatings Technology 201, no. 3-4 (October 2006): 1511–18. http://dx.doi.org/10.1016/j.surfcoat.2006.02.025.

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10

Yang, Li Jun, Ze Hui Zhang, Xin An Dang, and Lin Li. "Properties of TiAl/TiAlN/TiAlCN Films Deposited by Arc Ion Plating on GCr15 Rings." Materials Science Forum 789 (April 2014): 449–54. http://dx.doi.org/10.4028/www.scientific.net/msf.789.449.

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Ring is one of the major textile spinning machine consumable part, it has an important influence on yarn quality and cost. Ring of domestic cotton spinning enterprises generally has poor hardness, bad accuracy, not durable and difficult to guarantee the quality of the yarn, foreign ring has excellent performance, but it is too expensive, so it is difficult to widely used in China[1]. Vacuum arc ion plating technology has a wide range of applications in the aerospace, automobile, mold, tool, electronics and other fields [2-3]. TiN film which is prepared by arc ion plating technology has been widely used because of the TiN film has poor oxidation resistance and wear resistance at high temperatures, so the ternary films are developed on TiN film, such as TiAlN [4], TiCN etc. Traveller circle in the ring on the slide to produce large amounts of heat, it makes the ring surface temperature reach 400°C. When higher than 400°C, the TiCN film failure, therefore, ring should not be plated on the TiCN films. While TiAlN film oxidation temperature reaches 800°C. In HSS twist drill, depositing of TiAlN film can improve the service life more than four times [5]. Studies [6-8] have found that using pulsed laser deposition and chemical vapor deposition technique to prepare TiAlCN film, its wear resistance, high temperature stability is better. Pulsed laser deposition is mainly used in laboratory research. It is difficult to deposit a large area uniform film. Chemical vapor deposition of deposition rate is less than the arc ion plating, and produces lots of waste gas, leading to the environment is polluted. Arc ion plating technology can deposit the uniform films of large area with high deposition rate and deposition with no environmental pollution, therefore, this study, by means of vacuum arc ion plating technology to prepare high-precision, long-life and low-cost domestic cotton spinning ring. In order to obtain the best film process parameters, the performance of film is investigated at different bias and arc current.

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Grewal, Jasmaninder Singh, Buta Singh Sidhu, and Satya Prakash. "Characterization of Nanostructured and Conventional TiAlN Coatings Deposited on AISI-304 Boiler Steel." Advanced Materials Research 1137 (June 2016): 1–14. http://dx.doi.org/10.4028/www.scientific.net/amr.1137.1.

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In the manuscript conventional and nanostructured nitrided coatings developed to increase hardness and to improve the wear, erosion and corrosion resistance of structural materials. Three coatings of TiAlN were deposited on AISI-304, out of which two were thin nanocoatings at different temperatures of 500°C and 200°C are developed by Oerlikon Balzer’s rapid coating system machine under a reactive nitrogen atmosphere. One conventional coating TiAl was deposited by Plasma spraying method which was post nitrided. Then the coated samples were characterized with relative to coating thickness, microhardness, porosity and structure. The XRD and SEM/EDAX techniques have been used to identify various phases formed after coating on the surface of steel.The microhardness of conventional TiAlN coating was found to be of the order of 900-950 Hv. The grain size for nanostructured TiAlN coatings deposited at 500°C and 200°C are 15nm and 14nm respectively as calculated by Sherrer’s formula from XRD plot.

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Tan, Xin, Zhen Yang Xin, Xue Jie Liu, Qing Bin Zhang, and Yichao Jia. "First-Principles Study on Elastic Properties and Electronic Structure of Ti_1-xAl_xN." Advanced Materials Research 690-693 (May 2013): 2171–74. http://dx.doi.org/10.4028/www.scientific.net/amr.690-693.2171.

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As excellent performance coating material, the TiAlN coating has become alternative to TiN coating, with a very broad application prospects. We calculated the lattice constants, elastic parameters, electronic constants of Ti1-xAlxN. Its elastic constants trend was downward as the Al element contents increasing, and its brittleness fell. We had analysed the band structure and density of states of TiA1N, and TiA1N was illustrated to be conductor.

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13

An, Liqiong, Syed Talat Ali, Thomas Søndergaard, Jeppe Nørgaard, Yao-Chung Tsao, and Kjeld Pedersen. "Optimization of TiAlN/TiAlON/Si3N4 solar absorber coatings." Solar Energy 118 (August 2015): 410–18. http://dx.doi.org/10.1016/j.solener.2015.05.042.

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14

LEI, X. L., Y. HE, and F. H. SUN. "EFFECT OF DIAMOND INTERLAYER ON THE TRIBOLOGICAL PROPERTIES OF TiAlN FILM SLIDING AGAINST CARBON STEEL." Surface Review and Letters 25, no. 06 (August 2018): 1950001. http://dx.doi.org/10.1142/s0218625x1950001x.

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In this study, the effect of diamond interlayer on the tribological properties of titanium aluminum nitride (TiAlN) film sliding against medium carbon steel is investigated in dry rotary friction tests, by evaluating the coefficients of friction (COFs), wear rates, worn surfaces and element transitions of the contacted surfaces in the cemented carbide (WC-Co)-steel, TiAlN-steel, microcrystalline diamond (MCD)-steel, TiAlN/MCD-steel, micro- and nano-crystalline diamond (MNCD)-steel and TiAlN/MNCD-steel contacting pairs. It is found that compared with the TiAlN monolayer, the TiAlN/MCD bilayer film shows 57% higher COF, while the COF of TiAlN/MNCD multilayer inversely drops as much as 54%, due to the distinguished surface diamond grain morphologies of the MCD and MNCD interlayers as well as the copied effect of the TiAlN layer with relatively small thickness. Meanwhile, the diamond interlayer can provide robust load support for the top TiAlN layer, induce the wear mechanism transform from the abrasive wear to adhesive wear, and result in the mild wear of TiAlN/MCD and TiAlN/MNCD multilayers compared to the TiAlN monolayer. Moreover, the softer TiAlN top layer on MCD and MNCD interlayers can effectively improve the storage capacity of element oxygen and worn steel ball debris as well as accelerating the surface chemical reactions to form a smoother continuous ionic metal oxides tribofilm in the contacted zones due to its good self-lubricating property. Among all the hard coatings discussed when sliding against medium carbon steel, the TiAlN/MNCD coating shows the lowest COF and mild wear, due to the robust load support capacity of the beneath MNCD layer as well as the good self-lubricated and tribofilm formation capacity of the top TiAlN layer, which shows broad application potential in carbon steel machining.

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Xian, Guang, Hai Bo Zhao, Hong Yuan Fan, and Hao Du. "The Structure and Adhesion of Zr/TiAlN Coatings on High-Speed Steel and Cemented Carbide Substrates." Applied Mechanics and Materials 459 (October 2013): 46–50. http://dx.doi.org/10.4028/www.scientific.net/amm.459.46.

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Zr/TiAlN coatings as well as single TiAlN coatings were deposited on high-speed steel and cemented carbide substrates by medium frequency magnetron sputtering. The crystal structure and cross-sectional morphology of coatings were evaluated by X-ray diffraction (XRD) and scanning electron microscopy (SEM), respectively. The adhesion of coatings to substrate was measured by Rockwell indention tests. These investigations show that the main diffraction peak of Zr/TiAlN and TiAlN coatings are corresponding to the TiN phase. The preferred orientation of out TiAlN coatings is obviously affected by Zr interlayer and substrate materials. The TiAlN coatings both on HSS and cemented carbide substrates exhibit a columnar structure. But, the columnar morphology of Zr/TiAlN on cemented carbide substrate becomes ambiguous and this structure of Zr/TiAlN coatings on HSS substrate even changes to isometric. The Rockwell indention results indicate that the adhesion of TiAlN coatings is significantly improved by adding Zr interlayer both on HSS substrate and cemented carbide substrate.

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Cai, Zhi Hai, Ping Zhang, and Yue Lan Di. "Nanolayered CrN/TiAIN Coatings Synthesized by Ion Plating Technology for Tribological Application on Piston Rings." Advanced Materials Research 216 (March 2011): 430–34. http://dx.doi.org/10.4028/www.scientific.net/amr.216.430.

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By using the ion plating technology,the multilayered CrN/TiAlN as well as monolayered CrN and TiAlN coatings were made on the suface of piston rings to improve its tribological properties and increase service life using Cr and Ti50Al50 alloy cathodes. EDS analysis showed that the main compositions of CrN/TiAlN coatings are Cr30.61%,Ti 20.42%,Al 13.88% and N 35.10%. The preferred orientation was changed from (111) in CrN and TiAlN monolayered coatings to (220) plane in the multilayered CrN/TiAlN coatings. The multilayered CrN/TiAlN coatings had smaller crystallite size than the monolayered CrN coatings. The multilayered TiAlN/CrN coating with rotational speed at 1.5 rpm exhibited the highest H3/E2 ratio value of 0.23 GPa, indicating the best resistance to plastic deformation, among the studied CrN, TiAlN and multilayered TiAlN/ CrN coatings. The CrAlTiN composite films performs better than binary CrN as well as the Cr plating in teams of hardness and wear resistance at high temperature.

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Muhammad, Salman Atir, Honglie Shen, Azhar Ali Haidry, Kai Gao, and Adil Raza. "IR filtering properties of TiAlN/Cu/TiAlN coatings." Materials Research Express 6, no. 5 (February 13, 2019): 055511. http://dx.doi.org/10.1088/2053-1591/ab031e.

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Heim, D., and R. Hochreiter. "TiAlN and TiAlCN deposition in an industrial PaCVD-plant." Surface and Coatings Technology 98, no. 1-3 (January 1998): 1553–56. http://dx.doi.org/10.1016/s0257-8972(97)00303-4.

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Hao, Guangchao, Zhanqiang Liu, Xiaoliang Liang, and Jinfu Zhao. "Influences of TiAlN Coating on Cutting Temperature during Orthogonal Machining H13 Hardened Steel." Coatings 9, no. 6 (May 30, 2019): 355. http://dx.doi.org/10.3390/coatings9060355.

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TiAlN has been widely used in cutting tool coating due to its excellent mechanical and thermal performances. However, the research on the TiAlN coating effect on cutting temperature is not comprehensive enough. In this paper, the friction tests at elevated temperature and hard machining H13 hardened steel tests are conducted by using TiAlN coated tools and uncoated tools, respectively. The results of using TiAlN coated tools are compared with those from using uncoated tools. It is found that the coefficient of friction (COF) between TiAlN coated tool and H13 hardened steel is reduced to 0.63 at 800 °C. The COF value is 0.75 for uncoated tool. Under the same cutting conditions, the TiAlN coating shortens tool-chip contact length. The tangential cutting forces and cutting zone temperatures are decreased with smaller COF and shorter tool-chip contact length. Due to the lower thermal conductivities of TiAlN coating and the Al2O3 oxide layer formatted at tool rake face, the cutting heat conducted into cutting tool substrate was reduced. The cutting temperatures in TiAlN coated tool substrate are decreased by at least 10.68% in this study. The TiAlN coating reduces the cutting temperature by decreasing the cutting heat generation and conduction.

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Sasaki, Tomohiro, Takahiro Yagi, Takehiko Watanabe, and Atsushi Yanagisawa. "Effect of Diffusion Condition for Aluminizing on TiAl Based Alloy." Materials Science Forum 706-709 (January 2012): 2571–76. http://dx.doi.org/10.4028/www.scientific.net/msf.706-709.2571.

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Diffusion treatments of TiAl-based alloys (49.1 at% Al) aluminum coated by thermal spray were carried out at the temperature range of 700°C-1100°C. The influence of the diffusion condition for the formation of intermetallic phases in the coating has been investigated. In the initial stage of diffusion treatment, TiAl3 was formed on the outermost surface by the diffusion between liquid aluminum and the substrate. In addition, an intermediate layer comprised of Ti2Al5 (at 1100°C), TiAl2 and Al diffused layer (Al-rich TiAl) was confirmed under the outermost layer. The maximum thickness of TiAl3 during the initial stage increases as the diffusion temperature decreases. In addition, the shape of TiAl3 layer was dependent on the diffusion temperature; the outermost layer without pores was confirmed at the temperature of 700°C. TiAl2 and Al-rich TiAl developed by solid-state diffusion from TiAl3 layer following a parabolic low. The activation energies for growth have been calculated to be 194 kJ/mol for TiAl2 and 292 kJ/mol for Al-rich TiAl.

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Lyu, Yueling, Yangzhi Chen, and Yulin Wan. "A novel post-processing method for 316L steel specimen generated by SLM using TiN/TiAlN multilayer coating." Rapid Prototyping Journal 26, no. 9 (August 10, 2020): 1477–83. http://dx.doi.org/10.1108/rpj-07-2019-0199.

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Purpose Selective laser melting (SLM) is an important advanced additive manufacturing technology. The existing SLM printing technology cannot manufacture the mechanical parts that fully meet the requirements of high precision and strength. This paper aims to explore a new post-processing method for SLM 316L specimen, namely, using of the TiN/TiAlN multilayer coating fabricated by multi-arc ion plating on the surface of SLM specimens, for improving the performance of SLM specimens. The other purpose of this paper is compared the performances of the TiAlN/TiN multilayer coating machined specimen and the TiN/TiAlN multilayer coating SLM specimen. Design/methodology/approach The TiN/TiAlN multilayer coating is fabricated by multi-arc ion plating on the surface of 316L specimens. The surface morphology and selected mechanical properties of TiN/TiAlN multilayer coating plating on the SLM substrate specimen and the machined substrate specimen were studied in this paper. The analyzed properties included surface topography, micro hardness, the adhesion, the thickness and the wear resistance of TiN/TiAlN multilayer coating plating on the SLM substrate specimen and the machined substrate specimen. Findings The electron microscope images reveal that surface morphology of TiN/TiAlN multilayer coating plating on the SLM specimens is relatively flat, and there are some micro-particles in different sizes and pin holes dispersed on them. After TiN/TiAlN multilayer coating, the performances of SLM samples, such as micro hardness, the thickness and the wear resistance, were significantly improved. The micro hardness of TiN/TiAlN multilayer coating machined specimen is higher than that of TiN/TiAlN multilayer coating SLM specimen. However, the adhesion of TiN/TiAlN multilayer coating machined specimen is less than that of TiN/TiAlN multilayer coating SLM specimen. Originality/value The study provides a new post-processing method for SLM 316L specimen to improve the performance of SLM specimens and to enable SLM specimens to be applied in the field of precision mechanical transmission.

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Raaif, Mohamed. "Constructing and Characterizing TiAlN Thin Film by DC. Pulsed Magnetron Sputtering at Different Nitrogen/Argon Gas Ratios." JOURNAL OF ADVANCES IN PHYSICS 14, no. 2 (September 3, 2018): 5638–52. http://dx.doi.org/10.24297/jap.v14i2.7542.

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In this survey, the magnetron sputtering with Dc. Pulsed mode was embroiled to deposit TiAlN thin film on AISI 316 as a substrate. All the plasma magnetron parameters were fixed excluding the nitrogen gas ratio which was varied from 10% to 50% with step interval of 10% with respect to argon. The structure, mechanical, tribological and electrochemical peculiarities of TiAlN films were studied. The TiAlN deposition rate is decreased in regard with increasing the nitrogen gas ratio where, the film thickness recorded a maximum value of 3 µm at nitrogen gas ratio of 10 %. X-ray configurations demonstrated the formation of solid solution phase of TiAlN with different orientations. The TiAlN coating has (111) preferred orientation at 10 and 20% nitrogen gas ratios while has (200) preferred orientation at 30- 50% nitrogen gas ratios. The crystallite size is decreased with increasing the nitrogen gas ratio. The results depicted that, the microhardness of TiAlN film is increased with decreasing the nitrogen gas ratio and recorded a maximum value of approximately 850 HV0.015 at 10% N2. Additionally, the tribological properties of the coated AISI 316 with TiAlN are enhanced compared with the uncoated sample. The wear volume loss of the coated sample at 10% N2 has a value of nearly 9X104 µm3 which is low in comparison with AISI 316 substrate that has a value of 4.5X106 µm3. The corrosion resistance of all TiAlN coatings was better than the uncoated sample. It was demonstrated; the change in nitrogen gas ratio affected the physicochemical characteristics of the TiAlN coating.

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Lu, Long, Ming Hao Ren, and Tao Jiang. "Sliding Friction and Wear Test of TiAlN TiN Films and 40Cr Steel." Advanced Materials Research 189-193 (February 2011): 62–65. http://dx.doi.org/10.4028/www.scientific.net/amr.189-193.62.

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40Cr steel substrate is coated with TiAlN/TiN films by Multi-arc ion technology. The properties of sliding friction and wear on the surfaces of TiAlN/TiN films and substrate are tested by using the machine of friction and wear. The carrying capacity and tribological properties are investigated. The surface morphology of wear specimens is observed and the elements of wear scar center are analyzed. The results show that the friction coefficient of TiAlN/TiN films is lower than 40Cr under the same conditions. The wear scar of TiAlN/TiN films is lower and the wear loss is fewer than 40Cr. The TiAlN/TiN films can successfully reduce friction and wear resistance.

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Lee, Sang Yong, and Sang Yul Lee. "Application of PVD Coatings for Improvement of Die Performance in Copper Semi-Solid Processing." Solid State Phenomena 116-117 (October 2006): 84–87. http://dx.doi.org/10.4028/www.scientific.net/ssp.116-117.84.

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TiAlN/CrN multilayer coatings with an superlattice period of 6.1nm was applied to a proto-type high temperature segment mold for Cu semi-solid processing so that it was investigated the possibilities of TiAlN/CrN multilayer coating as a candidate protective coatings to extend the lifetime of high temperature molds and dies. Much improved performance was obtained from the TiAlN/CrN coated molds, although different behaviors were observed depending upon the type of substrate mold materials. . Improvement of mold performance was observed by TiAlN/CrN coating on AISI H13 steel, but TZM alloy with TiAlN/CrN coating was found to be the best candidate as a mold for high temperature Cu semi-solid processing.

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Xian, Guang, Hai Bo Zhao, Hong Yuan Fan, and Hao Du. "The Structure and Mechanical Properties of Me/MeN/TiAlN Trilaminar Coatings Deposited by a Hybrid PVD Coating Technique." Applied Mechanics and Materials 423-426 (September 2013): 704–13. http://dx.doi.org/10.4028/www.scientific.net/amm.423-426.704.

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The purpose of this study is to investigate the microstructure, mechanical properties and adhesion of Ti/TiN/TiAlN and Zr/ZrN/TiAlN trilaminar coatings, which were deposited on the high-speed steel substrate and cement carbide substrate by a hybrid PVD coating technique. X-ray diffraction technique (XRD) was used to reveal the structure of coatings. The fracture appearance of coatings was presented by scanning electron microscopy (SEM) and the element content was characterized by energy dispersive X-ray (EDX). Hardness and Yong's modulus were measured by using a nanoindentation technique and the adhesion of coatings was carried out with Rockwell HRC indentations. The results showed that all the coatings present a fcc B1 (NaCl type) structure and the TiN (111) is the dominant orientation. The TiAlN coatings with Ti/TiN interlayer presented a typical columnar structure, while the columnar structure became ambiguous in TiAlN coatings with Zr/ZrN interlayer. The chemical composition of TiAlN coatings is almost unacted on the inner interlayer. The hardness of the coatings on CC substrate is greater than that of on HSS substrate. However, the Ti/TiN/TiAlN coatings on HSS substrate has the maximum theH3/E*2ratio at 0.178 with a lowest hardness. The adhesion of Ti/TiN/TiAlN and Zr/ZrN/TiAlN coatings on CC substrate is remarkable greater than the adhesion of same coatings on HSS substrate.

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Kasuya, Takeshi, and Hideto Suzuki. "Effect of Film Thickness on Fatigue Strength of TiAl Alloy Coated with TiAlN Film at Elevated Temperature." Key Engineering Materials 297-300 (November 2005): 1446–51. http://dx.doi.org/10.4028/www.scientific.net/kem.297-300.1446.

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The fatigue strength of TiAl intermetallic alloy coated with TiAlN film was studied in vacuum at 1073K using a SEM-servo testing machine. In addition, three kinds of TiAlN films were given by physical vapor deposition (1, 3, and 10μ m). The fatigue strength of 3μ m was highest. Also, the fatigue strength of 1μ m was lowest. From this result, existence of optimum film thickness was suggested because the difference of fatigue strength arose in each film thickness. The justification for existence of optimum film thickness is competition of 45-degree crack and 90-degree crack. The 45-degree crack is phenomenon seen in the thin film (1μ m), and is caused by plastic deformation of TiAl substrate. The 45-degree crack is the factor of the fatigue strength fall by the side of thin film. In contrast, the 90-degree crack is phenomenon in the thick film (10μ m), and is caused as result of reaction against load to film. The 90-degree crack is the factor of the fatigue strength fall by the side of thick film. In conclusion, the optimum film thickness can perform meso fracture control, and improves fatigue strength.

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He, Hui Bo, Wen Qiang Han, Hua Ying Li, Jun Yang, and Tao Gu. "Effect of TiN and TiAlN Coatings on Tribological Properties and Efficiency of Gear." Advanced Materials Research 933 (May 2014): 159–64. http://dx.doi.org/10.4028/www.scientific.net/amr.933.159.

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In order to explore the effect of TiN and TiAlN coatings on tribological properties and efficiency of gear, TiN and TiAlN coatings were deposited on 45 steel and the surface of gears by Arc Ion Plating technique. The dry tribological behavior of the substrate and coatings were tested in a ball-on-disk tribometer. The microcosmic morphology of the wear areas were observed by scanning electron microscope and energy dispersive spectrum. The wear mechanism of TiN and TiAlN coatings were investigated to assess the performance of the coatings. The efficiency of uncoated and coated gear was obtained and compared at various input rotating speeds. The results showed that TiN and TiAlN coatings provide a significant decrease of average friction coefficients compared with substrate. The wear mechanisms TiN and TiAlN coatings are mainly abrasive and adhesive wear, accompanied with adhesive and oxidation wear. The efficiency of gear has been significantly enhanced after TiN and TiAlN coatings deposition.

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Guo, You Dan. "Wear Rule of TiAlN Coated Cutting Tool when Milling Material with High Hardness at High Speed." Key Engineering Materials 458 (December 2010): 106–12. http://dx.doi.org/10.4028/www.scientific.net/kem.458.106.

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As a new cutting tool, TiAlN coated cutting tool shows incomparable excellent performance in milling material with high hardness and high strength at high speed. The study shows that TiAlN has its unique cutting characteristics and rule in milling materials with high hardness and high strength in high speed under different milling conditions. This study shall provide reference for TiAlN coated cutting tool to mill materials with high hardness and high strength through the study on the wear rule of TiAlN coated cutting tool.

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Lee, Sang Yong, and Sang Yul Lee. "Comparative Evaluation of TiN/CrN, AlN/CrN, TiAlN/CrN Multilayer Films for the Use of Semi-Solid Processing of Cu Alloys." Solid State Phenomena 116-117 (October 2006): 124–27. http://dx.doi.org/10.4028/www.scientific.net/ssp.116-117.124.

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In order to investigate the effect of PVD coatings on the performance of proto-type high temperature mold and to identify the best candidate thin films for Cu semi-solid processing, TiAlN/CrN multilayer coatings with various superlattice periods was synthesized using a closed field unbalanced magnetron sputtering method with separate Cr and TiAl and characteristics of these films were compared with those from TiN/CrN and AlN/CrN films in terms of microstructure, nanoindentation hardness, and oxidation test at 900 in air. TiN/CrN film showed the best mechanical properties but their oxidation resistance, the most critical property for high temperature semi-solid processing was the poorest. Therefore TiAlN films with a superlattice period of 6.1nm which has intermediate plastic deformation resistance with the best oxidation resistance were considered to be the best candidate out of three different films studied in this work.

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Bejarano Gaitan, Gilberto, Julio César Caicedo A., José Manuel Caicedo R., and Adam Georg Balogh S. Gottschalk. "Incremento de las propiedades mecánicas del Nitruro de Titanio mediante aplicación de un sistema multicapa de Tin/TiAlN depositado por pulverización catódica." Informador Técnico 71 (December 14, 2007): 6. http://dx.doi.org/10.23850/22565035.774.

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Multicapas de TiN/TiAIN fueron depositadas mediante la técnica d.c. magnetrón sputtering reactivo, a partir de blancos de titanio y aluminio de 10 cm de diámetro y de 99.9% de pureza en una atmósfera de argón-nitrógeno, a una temperatura del sustrato de 300°C y presión de 7x10-3 mbar. Como sustratos se utilizaron probetas de silicio con orientación (100) y de acero AISI M2. Inicialmente, se investigó la influencia del contenido de aluminio sobre la dureza de los recubrimientos de TiAlN y posteriormente se analizó el comportamiento de las propiedades mecánicas de los recubrimientos de TiN/TiAlN en función del número de multicapas. Para tales efectos se determinó la composición química de los recubrimientos mediante es pectroscopia EDX; la estructura cristalina por difracción de rayos X (XRD) y la morfología de crecimiento a través de microscopia electrónica de barrido (SEM). La dureza y la adherencia fueron determinadas por la técnica de la microindentación y de rayado respectivamente.

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Chen, S. N., Y. M. Zhao, Y. F. Zhang, L. Chen, B. Liao, X. Zhang, and X. P. Ouyang. "Influence of carbon content on the structure and tribocorrosion properties of TiAlCN/TiAlN/TiAl multilayer composite coatings." Surface and Coatings Technology 411 (April 2021): 126886. http://dx.doi.org/10.1016/j.surfcoat.2021.126886.

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Kulkarni, Atul P., and Vikas G. Sargade. "Performance of Multilayered PVD Coated Cemented Carbide Inserts during Dry Turning of AISI 304 Austenitic Stainless Steel." Advanced Materials Research 794 (September 2013): 248–54. http://dx.doi.org/10.4028/www.scientific.net/amr.794.248.

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AISI 304 austenitic stainless steel is generally “difficult-to-cut” material than other types of steel on account of their high strength, high work hardening tendency and poor thermal conductivity. The focus of the paper is on the dry, high speed machining which is ecologically desirable and cost effective. It is also the future of machining and called as green machining. PVD multilayered TiN/TiAlN and TiAlN/TiSiN coated inserts were used for dry, high speed turning of AISI 304 austenitic stainless steels material. TiN/TiAlN coating was deposited using “Cathodic Arc Evaporation” (CAE) technique where as TiAlN/TiSiN coating was deposited using “Closed-Field Unbalanced Magnetron Sputtering” (CFUBMS) technique. Coatings are deposited on K-grade (K-20) cemented carbide insert. Scanning Electron Microscopy (SEM), microhardness tester and scratch tester were used to examine microstructure, microhardness and adhesion of coating. The thickness of the both coating was found to be 3.8 ±2 µm. TiN/TiAlN coating demonstrated micro-hardness value 34 GPa where as TiAlN/TiSiN coating shows 37 GPa. The adhesion strength of the TiAlN/TiSiN coating is 86 N and that of TiN/TiAlN coating is 83 N.The turning tests were conducted in dry machining environment at cutting speeds in the range of 100 to 340 m/min, feed in the range of 0.08 to 0.20 mm/rev keeping depth of cut constant at 1 mm. The influences of cutting speed, feed and tool coating were investigated on the machined surface roughness, flank wear and cutting force. TiAlN/TiSiN coated tool showed better performance and exhibited lower cutting forces than TiN/TiAlN coated tool. Built-up edge was not observed during using coated tool due to better thermal stability of the coating. The research work findings will also provide useful economic machining solution in case of dry, high speed turning of AISI 304 stainless steel, which is otherwise usually, machined by costly PCD or CBN tools. The present approach and results will be helpful for understanding the machinability of AISI 304 stainless steel during dry, high speed turning for the manufacturing engineers.

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Kumar, T. Sampath, S. Balasivanandha Prabu, and T. Sorna Kumar. "Comparative Evaluation of Performances of TiAlN-, AlCrN- and AlCrN/TiAlN-Coated Carbide Cutting Tools and Uncoated Carbide Cutting Tools on Turning EN24 Alloy Steel." Journal of Advanced Manufacturing Systems 16, no. 03 (August 2017): 237–61. http://dx.doi.org/10.1142/s0219686717500159.

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In the present work, the performances of TiAlN-, AlCrN- and AlCrN/TiAlN-coated and uncoated tungsten carbide cutting tool inserts are evaluated from the turning studies conducted on EN24 alloy steel workpiece. The output parameters such as cutting forces, surface roughness and tool wear for TiAlN-, AlCrN- and AlCrN/TiAlN-coated carbide cutting tools are compared with uncoated carbide cutting tools (K10). The design of experiment based on Taguchi’s approach is used to obtain the best turning parameters, namely cutting speed ([Formula: see text]), feed rate ([Formula: see text]) and depth of cut ([Formula: see text]), in order to have a better surface finish and minimum tool flank wear. An orthogonal array (L[Formula: see text] was used to conduct the experiments. The results show that the AlCrN/TiAlN-coated cutting tool provided a much better surface finish and minimum tool flank wear. The minimum tool flank wear and minimum surface roughness were obtained using AlCrN/TiAlN-coated tools, when [Formula: see text][Formula: see text]m/min, [Formula: see text][Formula: see text]mm/rev and [Formula: see text][Formula: see text]mm.

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Lyu, Yueling, Jingwei Wang, Yulin Wan, and Yangzhi Chen. "The Influence of Selective Laser Melting Process Parameters on the Property of TiAlN/TiN Multilayer Coating on the 316L Steel." Coatings 9, no. 6 (June 10, 2019): 377. http://dx.doi.org/10.3390/coatings9060377.

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Selective laser melting (SLM) is an important advanced additive manufacturing technology. The existing SLM products cannot fully meet the requirements of high-precision and strength of the mechanical component because of their defects. The TiAlN/TiN multilayer coating can improve the surface property of SLM products. The present work aims to explore the influences of different process parameters of SLM on the property of TiAlN/TiN multilayer coating plating on the 361L specimen and the mechanism of these influences. Taking laser power, scanning speed, and scanning space as factors, an orthogonal experiment was designed. The TiAlN/TiN multilayer coating specimens can be obtained by plating on the 361L specimen, fabricated by the process parameters of SLM on the orthogonal experiment. The surface topographies and properties of TiAlN/TiN multilayer coating were tested, the influences of SLM process parameters on TiAlN/TiN multilayer coating were analyzed, and the optimal process parameter was obtained. The electron microscope images revealed that the surface morphology of TiAlN/TiN multilayer coating plating on the SLM specimen was relatively flat, and there were some macro-particles in different sizes and pin holes dispersed on it. The thickness of the TiAlN/TiN multilayer coating was 2.77–3.29 μm. The microhardness value of coating SLM specimen was more than four times that of the uncoated SLM specimen and the wear rates of the uncoated specimen were 2–4 times that of the corresponding coating specimen. The comprehensive analysis shows that the laser power had the greatest influence on the comprehensive property of the coating. The primary cause of the influence of SLM process parameters on the properties of the TiAlN/TiN multilayer coating was preliminarily discussed. When the laser power was 170 W, the scanning speed was 1,100 mm/s, and the scanning space was 0.08mm, the TiAlN/TiN multilayer coating plating on the SLM specimen had the best comprehensive property.

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35

Kumar, Ch Sateesh, and Saroj Kumar Patel. "Effect of duplex nanostructured TiAlSiN/TiSiN/TiAlN-TiAlN and TiAlN-TiAlSiN/TiSiN/TiAlN coatings on the hard turning performance of Al2O3-TiCN ceramic cutting tools." Wear 418-419 (January 2019): 226–40. http://dx.doi.org/10.1016/j.wear.2018.11.013.

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Gou, Gang, Peng Cheng Xie, Zhen Xing Wen, Yu Mei Ding, and Wei Min Yang. "Study on the Surface Treatment of Special Screw for Light Guiding Plate’s Precision Injection Molding." Advanced Materials Research 221 (March 2011): 123–28. http://dx.doi.org/10.4028/www.scientific.net/amr.221.123.

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Defects such as black spots and yellow surfaces appeared in the process of injection molding light guiding plate as a result of the failure surfaces of the screw and screw tip. To choose and optimize the solutions of different surface treatments of the special screw for light guiding plate, the stripping performance testing platform was established. The experimental results showed that TiN and TiAlN or similar coatings by physical vapor deposition could significantly reduce the adhesion force between polycarbonate (PC) and different coatings. Through surface topography analysis of diversified coatings with SEM and AFM, TiAlN coatings represented the excellent surface quality of its smoothness, continuum, and low surface wave. To enhance the bonding force between the molding screw and coatings, TiAlN/Cr and TiAlN/Ti multi-films was developed which owned much more firm bonding force than TiAlN and good surface quality to be suitable for the special screw for manufacturing light guiding plate.

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37

Ait-Djafer, Zouina Amina, Nadia Saoula, Daniel Wamwangi, Noureddine Madaoui, and Hamid Aknouche. "Bias voltage effect on magnetron sputtered titanium aluminum nitride TiAlN thin films properties." European Physical Journal Applied Physics 86, no. 3 (June 2019): 30301. http://dx.doi.org/10.1051/epjap/2019180344.

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In this study, a negative substrate bias voltage is used to tune the structural, morphological, mechanical and electrochemical properties of TiAlN coatings fundamental for protective coating applications. TiAlN thin films have been deposited on glass, (001)Si and stainless steel substrates by RF magnetron sputtering at a power density of 4.41 W/cm2. The deposition rate was determined from X-ray reflectivity measurements to 7.00 ± 0.05 nm/min. TiAlN films used in this work were deposited for 60 min to yield a film thickness of 420 nm. Structural analysis has shown that TiAlN coating forms a cubic (fcc) phase with orientations in (111), (200), (220) and (222) planes. The deposited coatings present maximum hardness (H = 37.9 GPa) at −75 V. The dependence of hardness and Young's modulus and corrosion resistance on microstructure has been established. Electrochemical studies by potentiodynamic polarization in aggressive environment (3.5 wt.% NaCl) have revealed that stainless steel substrate with TiAlN coating exhibits excellent corrosion resistance.

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Budi, Esmar, M. Mohd Razali, and A. R. Md Nizam. "SURFACE MORPHOLOGY OF SPUTTERED TITANIUM-ALUMINUM-NITRIDE COATINGS." Spektra: Jurnal Fisika dan Aplikasinya 5, no. 1 (April 30, 2020): 79–86. http://dx.doi.org/10.21009/spektra.051.09.

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A study on the surface morphology of sputtered TiAlN coatings is presented. The coatings were deposited by DC magnetron sputtering on tungsten carbide insert tools. The surface morphology was characterized by using Atomic Force Microscopy (AFM), and the surface roughness was indicated by RMS roughness value. It was observed that the TiAlN coating surface morphology was rough as the negative substrate bias and nitrogen flow rate are increased. The evolution of the sputtered TiAlN coatings surface morphology was due to the competition between particle diffusion and re-scattering effect during the sputtering process. At high negative substrate bias and nitrogen flow rate, the re-scattering effect was prominent, leading to the high roughness of the sputtered TiAlN coating surface.

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Das, Soham, Mukul Gupta, Ashis Sharma, and Bibhu P. Swain. "Micro-structural and bonding structure analysis of TiAlN thin films deposited with varying N2 flow rate via ion beam sputtering technique." Materials Science-Poland 38, no. 1 (March 1, 2020): 122–31. http://dx.doi.org/10.2478/msp-2020-0006.

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AbstractTitanium aluminum nitride (TiAlN) thin films were deposited on Si(1 0 0 ) substrate using titanium and aluminum targets in 1:1 ratio at various N2 flow rates using ion beam sputtering (IBS) technique. The morphology, particle and crystallite size of TiAlN thin films were estimated by field emission scanning electron microscope (FE-SEM), atomic force microscope (AFM), and grazing incidence X-ray diffraction (GIXRD) technique, respectively. The SEM images of the TiAlN thin films revealed smooth and uniform coating, whereas AFM images confirmed the particle size varying from 2.5 nm to 8.8 nm, respectively. The crystallite size and lattice strain were observed to vary from 4.79 nm to 5.5 nm and 0.0916 and 0.0844, respectively, with an increase in N2 flow rate in the TiAlN thin films. The X-ray absorption near edge structure (XANES) results showed Ti L, N K and O K-edges of TiAlN coating within a range of 450 eV to 470 eV, 395 eV to 410 eV and 480 eV to 580 eV photon energy, respectively. The electronic structure and chemical bonding of state of c-TiAlN thin film of Ti L, N K and O K-edges were analyzed through semi-empirical curve fitting technique.

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Lei, Xuelin, Yun He, and Fanghong Sun. "Tribological properties of TiN/diamond and TiAlN/diamond bilayer films sliding against carbon steel." Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology 232, no. 8 (December 29, 2017): 1014–24. http://dx.doi.org/10.1177/1350650117750975.

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In this study, the tribological properties of the monolayer micro-crystalline diamond and nano-crystalline diamond films, TiN/diamond and TiAlN/diamond bilayer films on cemented tungsten carbide substrates are evaluated by dry sliding against the medium carbon steel counterpart balls, in terms of the coefficient of friction, wear rate, worn surfaces, and chemical transitions in the contacting wear zones. The significant coefficient of friction reducing effect of top-layer TiN and TiAlN coating only happens on the nano-crystalline diamond film, where the stable coefficient of friction of TiN/nano-crystalline diamond or TiAlN/nano-crystalline diamond bilayer coating reduces 9% or 53% compared with the nano-crystalline diamond film. The formed ionic metal oxides such as Fe2O3 or Fe3O4 coming from the chemisorbing of the atmospheric molecular water, oxygen in the air and the delamination of steel ball due to the repeated friction interaction is supposed to be responsible for the coefficient decreasing effect. The TiN or TiAlN film on diamond layer exhibits lower positive wear rate compared with the TiN or TiAlN film itself, due to the load support ability improvement resulted from the high hardness of diamond interlayers. Among all the tested hard films, the TiAlN/nano-crystalline diamond bilayer coating exhibits the valid potential to be the optimized tool coating in carbon steel machining in terms of its low coefficient of friction and wear rate, which may come from the self-lubricated transfer tribolayer formation on the TiAlN layer, as well as the enhanced mechanical supporting capacity of the underneath smooth and hard nano-crystalline diamond interlayer.

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Rebouta, L., A. Pitães, M. Andritschky, P. Capela, M. F. Cerqueira, A. Matilainen, and K. Pischow. "Optical characterization of TiAlN/TiAlON/SiO2 absorber for solar selective applications." Surface and Coatings Technology 211 (October 2012): 41–44. http://dx.doi.org/10.1016/j.surfcoat.2011.09.003.

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42

Barshilia, Harish C., N. Selvakumar, K. S. Rajam, D. V. Sridhara Rao, K. Muraleedharan, and A. Biswas. "TiAlN∕TiAlON∕Si3N4 tandem absorber for high temperature solar selective applications." Applied Physics Letters 89, no. 19 (November 6, 2006): 191909. http://dx.doi.org/10.1063/1.2387897.

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43

Sun, Guo Dong, Deng Liang Yi, and Chang Hua Liu. "Comparison of Surface Properties of TiN and TiAlN Coating Prepared by Arc Ion Plating for the Improvement of Life-Time Extension of Tool Steel." Advanced Materials Research 887-888 (February 2014): 1096–100. http://dx.doi.org/10.4028/www.scientific.net/amr.887-888.1096.

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TiN and TiAlN films have been coated on the surface of tool materials by various methods for the life-time extension of tool. In this work, for the improvement of hardness and adhesion of coating to SKD61 substrate, radical nitriding (RN) of substrate was carried out at 450°C for 5 hours in ammonia gas pressure of 2.7×103 Pa. The results showed that TiN and TiAlN coatings were distributed uniformly on the SKD 61 substrate. And the film thickness was up to 4 μm, which showed so high deposition efficiency (~ 66.7 nm/min) of arc ion plating at this typical process condition. For both coatings, the TiN phases could be detected and the (111) was dominant crystallite grown orientation. The AlN crystallite structure could be detected as expected in TiAlN film. The critical load of TiN film (22.36 N) was slightly smaller than that of TiAlN film (23.88 N). With increasing the load during scratch test, the friction coefficient of TiN film rose quickly, but friction coefficient of TiAlN had a little change, even decreased slightly.

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44

Song, Dong Hwan, Jong Kook Lee, Dong Seok Seo, and Gon Seung Yang. "Corrosion Resistance of TiAlN/ZrN and TiCrN/ZrN Multilayers during Heat Treatment." Materials Science Forum 569 (January 2008): 85–88. http://dx.doi.org/10.4028/www.scientific.net/msf.569.85.

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Titanium-based nitride coatings on cutting tools, press molds and dies can prolong their life cycle because of superior corrosion and oxidation resistance of coatings. In this study, TiAlN/ZrN and TiCrN/ZrN multilayer coatings were prepared by R.F magnetron sputtering, and microstructural evolution and corrosion resistance of the coatings were investigated during heat treatment. The TiAlN/ZrN and TiCrN/ZrN multilayer coatings were degraded by heating up to 600 oC with formation of oxides particles on the surface. During the heat treatment, the TiCrN/ZrN and TiAlN/ZrN multilayer coatings showed the lowest corrosion current density and the highest polarization resistance at temperature range of 400 oC and 500 oC. Consequently, the TiAlN/ZrN and TiCrN/ZrN multilayer coatings showed good corrosion resistance at temperature range of 400°C and 500°C during heating.

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Lille, Harri, Jakub Kõo, Andre Gregor, Alexander Ryabchikov, Fjodor Sergejev, Rainer Traksmaa, and Priit Kulu. "Comparison of Curvature and X-Ray Methods for Measuring of Residual Stresses in Hard PVD Coatings." Materials Science Forum 681 (March 2011): 455–60. http://dx.doi.org/10.4028/www.scientific.net/msf.681.455.

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Physical Vapour Deposition and PVD coatings are designed for several applications, from industrial to biomedical. Residual stresses, arising during coating deposition, have important effect on the coating’s service life as their influence to the mechanical and tribological properties. Our aim was to investigate the residual stresses in five different PVD coatings (TiN, TiCN, TiAlN, TiAlN, nc-(AlTi) N/α -Si3N4) (presence of the Ti as adhesion layer) by the layer growing curvature method and the X-ray diffraction techniques using a plate and a strip as the substrate. Residual stresses were compressive and very large (2.98 - 7.24) GPa in all coatings and comparable in TiN, TiAlN, TiAlN coatings in the case of both methods. The magnitude of residual stresses is influenced by intrinsic strain in the case of layer growth rather than by thermal stress.

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Wang, De Shan, and Qi Liang Li. "Magnetron Sputtering Preparation of Diamond-Like Carbon Film Adhesion Characteristics Research." Advanced Materials Research 1079-1080 (December 2014): 28–32. http://dx.doi.org/10.4028/www.scientific.net/amr.1079-1080.28.

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Using vacuum magnetron sputtering, preparation of diamond-like carbon film by middle transition layer of Ti, TiN and TiAlN, Ti/TiN/TiAlN in preparing multilayer structure of DLC carbon film on stainless steel substrates, research among different coating material of DLC carbon membrane structure, appearance, hardness, the influence of the interface bonding strength and wear resistance, the film contains some carbon chain structure sp3 hybridized carbon content in the highest and the excellent comprehensive mechanical properties of the material of the middle layer. Experimental studies find that Ti/TiN/TiAlN as transition layer DLC carbon film performance is good, obvious anti stripping adhesion properties, can reduce the diamond-like coating system caused by thermal expansion mismatch stress, using Ti/TiN/TiAlN transition layer of the interface bonding strength of the most outstanding in the middle.

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47

Geng, Haibin, Hanzhe Ye, Xingliang Chen, and Sibin Du. "Microstructure and Photothermal Conversion Performance of Ti/(Mo-TiAlN)/(Mo-TiAlON)/Al2O3 Selective Absorbing Film for Non-Vacuum High-Temperature Applications." Applied Sciences 11, no. 1 (December 24, 2020): 124. http://dx.doi.org/10.3390/app11010124.

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This paper aims to clarify the phase composition in each sub-layer of tandem absorber TiMoAlON film and verify its thermal stability. The deposited multilayer Ti/(Mo-TiAlN)/(Mo-TiAlON)/Al2O3 films include an infrared reflectance layer, light interference absorptive layers with different metal doping amounts, and an anti-reflectance layer. The layer thicknesses of Ti, Mo-TiAlN, Mo-TiAlON, and Al2O3 are 100, 300, 200, and 80 nm, respectively. Al content increases to 12 at.% and the ratio of N/O is nearly 0.1, which means nitride continuously changes to oxide. According to X-ray Diffraction (XRD) and high-resolution transmission electron microscopy (HRTEM) results, the diffraction peak that appears at 2θ = 40° demonstrates that Mo element aggregates in the substitutional solid solution (Ti,Al)(O,N) columnar grain. TiMoAlON films have low reflectivity in the spectrum range of 300–900 nm. When Al content is more than 10 at.%, absorptivity is almost in the spectrum range from visible to infrared, but absorptivity decreases in the ultraviolet spectrum range. When Al content is increased to 12 at.%, absorptivity α decreases by 0.05 in the experimental conditions. After baking in atmosphere at 500 °C for 8 h, the film has the highest absorptivity when doped with 2 at.% Mo. In the visible-light range, α = 0.97, and in the whole ultraviolet-visible-light near-infrared spectrum range, α = 0.94, and emissivity ε = 0.02 at room temperature and ε = 0.10 at 500 °C.

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Al-Tameemi, Hamza A., Thamir Al-Dulaimi, Michael Oluwatobiloba Awe, Shubham Sharma, Danil Yurievich Pimenov, Ugur Koklu, and Khaled Giasin. "Evaluation of Cutting-Tool Coating on the Surface Roughness and Hole Dimensional Tolerances during Drilling of Al6061-T651 Alloy." Materials 14, no. 7 (April 4, 2021): 1783. http://dx.doi.org/10.3390/ma14071783.

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Aluminum alloys are soft and have low melting temperatures; therefore, machining them often results in cut material fusing to the cutting tool due to heat and friction, and thus lowering the hole quality. A good practice is to use coated cutting tools to overcome such issues and maintain good hole quality. Therefore, the current study investigates the effect of cutting parameters (spindle speed and feed rate) and three types of cutting-tool coating (TiN/TiAlN, TiAlN, and TiN) on the surface finish, form, and dimensional tolerances of holes drilled in Al6061-T651 alloy. The study employed statistical design of experiments and ANOVA (analysis of variance) to evaluate the contribution of each of the input parameters on the measured hole-quality outputs (surface-roughness metrics Ra and Rz, hole size, circularity, perpendicularity, and cylindricity). The highest surface roughness occurred when using TiN-coated tools. All holes in this study were oversized regardless of the tool coating or cutting parameters used. TiN tools, which have a lower coating hardness, gave lower hole circularity at the entry and higher cylindricity, while TiN/TiAlN and TiAlN seemed to be more effective in reducing hole particularity when drilling at higher spindle speeds. Finally, optical microscopes revealed that a built-up edge and adhesions were most likely to form on TiN-coated tools due to TiN’s chemical affinity and low oxidation temperature compared to the TiN/TiAlN and TiAlN coatings.

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Yamazaki, Toshinari, Yoshio Okumura, Kenjiro Desaki, Toshio Kikuta, Hiroshi Anada, and Noriyuki Nakatani. "Application of TiAl laminate to a sputtering target for TiAlN films." Vacuum 83, no. 3 (October 2008): 479–82. http://dx.doi.org/10.1016/j.vacuum.2008.04.011.

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Yue, Jiang Ling, Yan Sheng Yin, and Ge Yang Li. "Microstructure, Mechanical Properties and Thermal Stability of TiAlN/Si₃N₄ Nano-Multilayer Films Deposited by Reactive Magnetron Sputtering." Advanced Materials Research 79-82 (August 2009): 489–92. http://dx.doi.org/10.4028/www.scientific.net/amr.79-82.489.

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A series of TiAlN/Si3N4 nano-multilayer films with various Si3N4 layer thicknesses were prepared by reactive magnetron sputtering. These multilayers were then annealed at temperatures ranging from 600 to 900°C in air for 1 hour. The composition, microstructure, and mechanical properties of the films were characterized by energy dispersive x-ray spectroscopy, x-ray diffraction, scanning electron microscopy, and nanoindentation. It reveals that under the template effect of TiAlN layers in multilayers, as-deposited amorphous Si3N4 is crystallized and grows coherently with TiAlN layers when Si3N4 layer thickness is below 0.6 nm. Correspondingly, the hardness and elastic modulus of the multilayers increase significantly. With further increase in the layer thickness, Si3N4 transforms into amorphous, resulting in a decrease of hardness and modulus. The TiAlN/Si3N4 nano-multilayers could retain their superlattice structure even up to 900°C. The small decrease in the hardness of multilayers annealed below 800°C was correlated to the release of compressive stress in multilayers. However, oxidation was found on the surface of multilayers when annealed at 800°C, which resulted in a marked decrease in the hardness of multilayers. The multilayers presented higher hardness as compared with the monolithic TiAlN film.

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Journal articles on the topic 'TiAlN'

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