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Artykuły w czasopismach na temat „Aluminium carbide powder xrd analysis”

Autor: Grafiati

Data publikacji: 3 czerwca 2025

Data aktualizacji: 31 lipca 2025

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1

Behera, Rajesh Kumar, B. P. Samal, S. C. Panigrahi, and K. K. Muduli. "Microstructural and Mechanical Analysis of Sintered Powdered Aluminium Composites." Advances in Materials Science and Engineering 2020 (April 21, 2020): 1–7. http://dx.doi.org/10.1155/2020/1893475.

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The present material world needs strong research studies for producing varieties of composite materials which have light weight and high strength with better performances. This leads to the introduction of materials through powder metallurgy technique. The main objective is to discover an aluminium matrix composite having enhanced characteristic performances and properties beyond the currently available materials. The current study has been carried out to develop an attractive composite having high strength, light weight, easy machinability, appreciable density, and low manufacturing cost. Alu

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Zaifol Samsu, Norinsan Kamil Othman, Mohd Suzeren Md Jamil, Hafizal Yazid, and Mohd Sofian Alias. "Corrosion Behaviour of Aluminium Matrix Composite Reinforced with Boron Carbide in 3.5% NaCl." International Journal of Nanoelectronics and Materials (IJNeaM) 16, DECEMBER (2023): 451–61. http://dx.doi.org/10.58915/ijneam.v16idecember.425.

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The corrosion behavior of Aluminium matrix composite reinforced with micro-size boron carbide was investigated in a 3.5% NaCl solution. The sample was prepared using the stir casting technique with compositions of 2, 4, 6, 8 and 10 wt% of B4C particles. Potentiodynamic polarisation methods were used to derive the electrochemical parameters while hardness analysis methods were used to derive the mechanical properties. A field emission scanning electron microscope (SEM) was employed to investigate the particle boron carbide distribution on the matrix and surface morphology of the metal surface b

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Pribytkov, Gennady, Anton Baranovskiy, Irina Firsina, Kirill Akimov, and Vladimir Krivopalov. "Study of Fe-matrix composites with carbide strengthening, formed by sintering of iron titanides and carbon mechanically activated mixtures." Metal Working and Material Science 26, no. 2 (2024): 212–23. http://dx.doi.org/10.17212/1994-6309-2024-26.2-212-223.

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Introduction. The addition of dispersed solid particles of refractory compounds (carbides, borides, silicides) to the structure of alloy is a widely used effective way to increase the wear resistance of steels and alloys. Composites with a matrix of iron-based alloys (steel and cast iron) strengthened by titanium carbide particles are of great practical interest. The main structural characteristics, which define hardness and wear resistance of the composites, are volume fraction, dispersion and morphology of the particles of the strengthening carbide phase. The structure of composites depends

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Endler, Ingolf, Mandy Höhn, Björn Matthey, Jakub Zálešák, Jozef Keckes, and Reinhard Pitonak. "Powder Diffraction Data of Aluminum-Rich FCC-Ti1−xAlxN Prepared by CVD." Coatings 11, no. 6 (2021): 683. http://dx.doi.org/10.3390/coatings11060683.

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Fcc-Ti1−xAlxN-based coatings obtained by Physical Vapor Deposition (PVD) or Chemical Vapor Deposition (CVD) are widely used as wear-resistant coatings. However, there exists no JCPDF card of fcc-Ti1−xAlxN for the XRD analysis of such coatings based on experimental data. In this work, an aluminum-rich fcc-Ti1−xAlxN powder was prepared and, for the first time, a powder diffraction file of fcc-Ti1−xAlxN was determined experimentally. In the first step, a 10 µm thick Ti1−xAlxN coating was deposited on steel foil and on cemented carbide inserts by CVD. The steel foil was etched and flakes of a free

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Samsu, Zaifol, Norinsan Kamil Othman, Mohd Suzeren Md Jamil, Hafizal Yazid, and Mohd Sofian Alias. "Effect of Nano Composite Boron Carbide on the Mechanical and Corrosion Behaviour of Aluminium Matrix Composite." Jurnal Kejuruteraan 36, no. 6 (2024): 2603–14. http://dx.doi.org/10.17576/jkukm-2024-36(6)-29.

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This study examined the use of stir casting to create an aluminum-nanoscale boron carbide composite. Following the sample’s solidification, mechanical and physical tests are carried out to determine the density and hardness. Tafel polarization in a 3.5% NaCl solution was utilized to determine the composite’s corrosion behavior, and tensile strength and hardness characterization techniques were employed to determine its mechanical characteristics. After the stir casting process, the surface morphology of the metal and the dispersion of boron carbide particles on the matrix were examined using a

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Gasha, Shimelis Bihon, Maik Trautmann, and Guntram Wagner. "Effect of Milling Time and Reinforcement Volume Fraction on Microstructure and Mechanical Properties of SiCp-Reinforced AA2017 Composite Powder Produced by High-Energy Ball Milling." Materials 17, no. 2 (2024): 435. http://dx.doi.org/10.3390/ma17020435.

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The influence of milling time and volume fraction of reinforcement on the morphology, microstructure, and mechanical behaviors of SiCp-reinforced AA2017 composite powder produced by high-energy ball milling (HEBM) was investigated. AA2017 + SiCp composite powder with different amounts of SiC particles (5, 10, and 15 vol%) was successfully prepared from gas-atomized AA2017 aluminum alloy powder with a particle size of <100 μm and silicon carbide (SiC) powder particles with an average particle size of <1 μm. An optical microscope (OM), X-ray diffraction (XRD), and scanning electron microsc

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Akhlaghi, Farshad, and Sareh Mosleh-Shirazi. "Effect of SiC Nanoparticles Content and Milling Time on the Characteristics of Al/SiC Nanocomposite Powders Produced via Mechanical Milling." Advanced Materials Research 829 (November 2013): 505–9. http://dx.doi.org/10.4028/www.scientific.net/amr.829.505.

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In the present study high energy ball milling was utilized to produce aluminum (Al-6061) matrix nanocomposite powders reinforced with nanosilicon carbide (SiC) particles. The starting materials containing different percentages (1,3 or 5 wt.%) of nanoSiC particles (25-50 nm) and Al (38-63 μm) were co-milled for different times (16, 20, 24 h) to achieve nanocomposite powders. The crystal size of powders were evaluated by quantitative XRD analysis. Laser particle size analysis was used to evaluate the size of powders during milling. The microstructure of powders and their microhardness values wer

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Meignanamoorthy, M., Manickam Ravichandran, Vinayagam Mohanavel, et al. "Microstructure, Mechanical Properties, and Corrosion Behavior of Boron Carbide Reinforced Aluminum Alloy (Al-Fe-Si-Zn-Cu) Matrix Composites Produced via Powder Metallurgy Route." Materials 14, no. 15 (2021): 4315. http://dx.doi.org/10.3390/ma14154315.

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In this paper, Al-Fe-Si-Zn-Cu (AA8079) matrix composites with several weight percentages of B4C (0, 5, 10, and 15) were synthesized by powder metallurgy (PM). The essential amount of powders was milled to yield different compositions such as AA8079, AA8079-5 wt.%B4C, AA8079-10 wt.%B4C, and AA8079-15 wt.%B4C. The influence of powder metallurgy parameters on properties’ density, hardness, and compressive strength was examined. The green compacts were produced at three various pressures: 300 MPa, 400 MPa, and 500 MPa. The fabricated green compacts were sintered at 375 °C, 475 °C, and 575 °C for t

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Shiva Shankar, G. S., and S. Basavarajappa. "Synthesis and Characterization of Aluminiun 2219 Reinforced with Boron Carbide and Molybdenum Disulfide Metal Matrix Hybrid Composites." Advanced Materials Research 1101 (April 2015): 28–31. http://dx.doi.org/10.4028/www.scientific.net/amr.1101.28.

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An attempt has been made to develop and characterize the Al2219 reinforced with Boron carbide (B4C) and Molybdenum disulfide (MoS2) hybridcomposites. The hybrid composites were prepared by using stir casting technique. Theexperimentalresult evaluates the density,micro hardness test & tensiletest.Themicrostructure shows existence of randomly dispersed reinforcement particles andfine reinforcement particles in prepared hybrid composites.X-Ray powder diffraction (XRD) analysis were conducted this confirms the physical content of constituents present in prepared composites. SEM is used to exam

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Sharma, Shashikant, and M. K. Gaur. "Application of Response Surface Methodology (RSM) in optimization of Surface Modification using Friction Stir Processing." International Journal for Research in Applied Science and Engineering Technology 10, no. 2 (2022): 1059–70. http://dx.doi.org/10.22214/ijraset.2022.40411.

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Abstract: Surface modification is the process of enhancing surface properties either through physical, chemical and biological effects in order to achieve superior surface quality. In this dissertation, initially the Aluminium composite is prepared using reinforcement of Boron Carbide nanoparticle which is inserted in a groove prepared on the specimen (AA5083 plate). Furthermore, the specimens are then taken for various tests including Ultimate Tensile Strength, Yield Strength, and characterization of material with the help of XRD and Tribological behavior of material respectively. Results are

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Alam, Mohammad Azad, Hamdan H. Ya, Mohammad Yusuf, et al. "Modeling, Optimization and Performance Evaluation of TiC/Graphite Reinforced Al 7075 Hybrid Composites Using Response Surface Methodology." Materials 14, no. 16 (2021): 4703. http://dx.doi.org/10.3390/ma14164703.

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The tenacious thirst for fuel-saving and desirable physical and mechanical properties of the materials have compelled researchers to focus on a new generation of aluminum hybrid composites for automotive and aircraft applications. This work investigates the microhardness behavior and microstructural characterization of aluminum alloy (Al 7075)-titanium carbide (TiC)-graphite (Gr) hybrid composites. The hybrid composites were prepared via the powder metallurgy technique with the amounts of TiC (0, 3, 5, and 7 wt.%), reinforced to Al 7075 + 1 wt.% Gr. The microstructural characteristics were inv

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Gulyashinov, Pavel, Undrakh Mishigdorzhiyn, and Nikolay Ulakhanov. "Influence of boriding and aluminizing processes on the structure and properties of low-carbon steels." Metal Working and Material Science 24, no. 2 (2022): 91–101. http://dx.doi.org/10.17212/1994-6309-2022-24.2-91-101.

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Introduction. Boriding and aluminizing are among the effective methods for improving the performance properties (corrosion resistance, heat resistance and wear resistance) of machine parts and tools. Solid-phase methods of carrying out techniques of thermochemical treatment (TCT) require long-term exposure at elevated temperatures, which negatively affects the structure and properties of the base material. From these positions, the selection of reasonable temperature-time parameters of solid-phase boriding and aluminizing processes is an urgent task. The purpose of this work is to assess the e

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Li, Liang, Xianhui Zhao, Haoyu Wang, Jianran Cao, and Xian-en Zhao. "Properties characterization and microstructural analysis of alkali-activated solid waste-based materials with sawdust and wastewater integration." PLOS ONE 20, no. 1 (2025): e0313413. https://doi.org/10.1371/journal.pone.0313413.

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Construction materials are significantly exposed to ecological hazards due to the presence of hazardous chemical constituents found in industrial and agricultural solid wastes. This study aims to investigate the use of sawdust particles (SDPs) and sawdust wastewater (SDW) in alkali-activated composites (AACs) made from a mixture of different silicon-aluminum-based solid wastes (slag powder-SP, red mud-RM, fly ash-FA, and carbide slag-CS). The study examines the impact of SDP content, treated duration of SDPs, and SDW content on both fresh and hardened properties of the AACs, including electric

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T., Albert* C. Pravin Tamil Selvan. "PREPARATION AND PROPERTIES OF ALUMINIUM COMPOSITE." INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY 6, no. 5 (2017): 179–84. https://doi.org/10.5281/zenodo.573525.

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A composite material is the combination of two or more materials, which are having different phases and the properties superior to the base material. Aluminium matrix composite (AMCs) are emerging as advance engineering materials due to their strength, ductility and toughness. The aluminium matrix can strengthened by reinforcing with hard ceramic particles like SiC, Al2o3 , B4C etc. In this paper, an effort is made to enhance the mechanical properties like strength and hardness of aluminium matrix composite by reinforcing aluminium matrix with boron carbide particles. By powder metallurgy rout

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Rizi, Mohsen Saboktakin, Hamid Reza Javadinejad, Sayed Ahmad Hosseini, and Ebrahim Aghababaie. "Synthesis of Nono-Crystalline Aluminum Carbide Using Thermal Treatment of Mechanically Activated Al and Graphite Mixture." Journal of Nano Research 53 (June 2018): 54–63. http://dx.doi.org/10.4028/www.scientific.net/jnanor.53.54.

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In this work, Nono-crystalline aluminum carbide particles were synthesized using both mechanical and thermal treatments. Frist, Al and graphite powders had been milled in a planetary ball mill. Then, milled mixtures have been annealed isothermally after the mechanical activation. The effects of two processes on the synthesized products were separately studied using X-ray diffraction (XRD), scanning electron microscopy (SEM) and simultaneous thermal analysis (STA) methods. Further, the grain size, lattice strain and dislocation density values were calculated according to XRD data. The results s

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Śusniak, M., J. Karwan-Baczewska, J. Dutkiewicz, M. Actis Grande, and M. Rosso. "Structure Investigation of Ball Milled Composite Powder Based on AlSi5Cu2 Alloy Chips Modified by Sic Particles." Archives of Metallurgy and Materials 58, no. 2 (2013): 437–41. http://dx.doi.org/10.2478/amm-2013-0014.

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The paper is focused on the processing of aluminum alloy chips using powder metallurgy. Chips obtained from recycled AlSi5Cu2 alloy were ball milled with the addition of silicon carbide powder with an average size of 2μm. Mechanical alloying process was employed to obtain homogeneous composite powder. The effect of processing time (0 - 40h) on the homogeneity of the system was evaluated, as well as a detailed study of the microstructure of AlSi5Cu2 aluminum chips and SiC particles during MA was carried out. Addition of silicon carbide (10, 20wt%) to recycled aluminium chips and application of

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Li, Shao Xiang, Zhao Feng Wang, Wen Qian Li, Gui Zhong Zhou, and Guang Zhao Liu. "Characterization of Recycled Cemented Carbide and the Raw Materials." Advanced Materials Research 852 (January 2014): 173–77. http://dx.doi.org/10.4028/www.scientific.net/amr.852.173.

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Nowadays, a large quantity of cemented carbide is being consumed, and the amount of scrap cemented carbide is increasing year by year. In this paper, crystal morphology, element content and phase structure of the recycled cobalt powder as well as recycled tungsten carbide powder were characterized by SEM, EDS and XRD. Hardness of the prepared W-Co alloy using recycled cobalt powder and recycled tungsten carbide powder as the raw materials was tested by Rockwell apparatus. Through analysis of these results, the existing problems in recycling of scrap cemented carbide emerged. As for recycling o

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Singh, Gagndeep, Hitesh Vohra, and Manpreet Kaur. "Fabrication and Characterization of Aluminium Matrix Composites by High Velocity Oxy-Fuel Thermal Spraying." Advanced Materials Research 585 (November 2012): 317–21. http://dx.doi.org/10.4028/www.scientific.net/amr.585.317.

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The High Velocity Oxy-fuel (HVOF) spray technique has been used by many researchers to deposit composite coatings, but there is less available literature discussing the fabrication of bulk metal matrix composites by this technique. In the current study, aluminum matrix composites with dispersions of alumina (Al2O3) and silicon carbide (SiC) particulates are fabricated by HVOF spray technique. The study comprises the steps of providing the substrate, preparing a mixed powder comprising a first metal powder as a matrix and a second metal powder comprising a ceramic and selected as reinforcement.

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Sroka, Marek, Ewa Jonda, and Wojciech Pakieła. "Laser Surface Modification of Aluminium Alloy AlMg9 with B4C Powder." Materials 13, no. 2 (2020): 402. http://dx.doi.org/10.3390/ma13020402.

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This paper presents the effects of laser treatment (fiber laser YLS-4000) on the microstructure and selected mechanical properties of the surface layer of AlMg (AlMg9) foundry alloy obtained by alloying with boron carbide (B4C). The correlation between laser alloying process parameters and selected properties of the formed layer was discussed. The studies were supported by microstructural analysis of the remelted zone (RZ), heat affected zone (HAZ), undissolved carbide particles, substrate material, and precipitates formed during rapid solidification. Metallographic investigations of the laser

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Mahajan, M., K. Singh, and O. P. Pandey. "Synthesis and Analysis of High Surface Area Vanadium Carbide Nanoparticles." Advanced Materials Research 585 (November 2012): 95–99. http://dx.doi.org/10.4028/www.scientific.net/amr.585.95.

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Vanadium carbide is known for its applications due to extreme hardness and high melting point. In this present work, vanadium carbide nanoparticles have been synthesized in a specially designed stainless steel autoclave by solvothermal route using vanadium pentoxide (V2O5) as precursor along with a hydrocarbon acetone (C3H6O) in the presence of reducing agent magnesium (Mg). The optimization of reaction time was studied at constant temperature of 800oC. The product powder was characterized by X-ray diffraction (XRD), Scanning electron microscopy (SEM), Transmission electron microscope (TEM) an

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Canute, X., and M. C. Majumder. "Investigation of tribological and mechanical properties of aluminium boron carbide composites using response surface methodology and desirability analysis." Industrial Lubrication and Tribology 70, no. 2 (2018): 301–15. http://dx.doi.org/10.1108/ilt-01-2017-0010.

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Purpose Aluminium metal matrix composites are used in automotive and aerospace industries because of their high performance and weight reduction benefits. The current investigation aims to focus on the development of the stir cast aluminium-boron carbide composites with enhanced mechanical and tribological properties. Design/methodology/approach The aluminium-boron carbide composites are produced by stir casting process. Aluminium alloy A356 is chosen as the matrix material and three sets of composites are produced with different weight fractions of boron carbide particles. Higher particle siz

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Nishimura, Toshiyasu, Xin Xu, Naoto Hirosaki, K. Kimoto, Yoo Yamamoto, and Hiroaki Tanaka. "Effect of Aluminium on High-Energy Ball Milling and Spark Plasma Sintering of Silicon Nitride." Key Engineering Materials 287 (June 2005): 156–59. http://dx.doi.org/10.4028/www.scientific.net/kem.287.156.

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A commercial silicon nitride powder with oxide sintering additives was ground with high-energy ball mill to obtain nano-sized powder. Metallic aluminium powder was added as a grinding additive. Effect of high-energy ball milling was evaluated by X-ray diffraction analysis. After milling, height of background increased and peak height of silicon nitride decreased in XRD chart, which suggested that vitrification and/or decrease in grain size of silicon nitride occurred. The milled powders were sintered by spark plasma sintering system. Aluminium nitride was formed during sintering by reaction of

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Hussain, Zuhailawati, Mahani Yusoff, and Radzali Othman. "Phase Analysis of Mechanically Alloyed In Situ Copper-Tungsten Carbide Composite." Advanced Materials Research 173 (December 2010): 67–71. http://dx.doi.org/10.4028/www.scientific.net/amr.173.67.

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An in-situ composite of copper and tungsten carbide powder was prepared by mechanical alloying of elemental powder. The sample has been milled in a high-energy ball mill for 20 h at different milling speed i.e. 100, 200, 300 and 400 rpm in an argon atmosphere. Investigations in terms of microstructural features and phase constitution of in-situ composites powder were performed by X-ray diffraction (XRD) and scanning electron microscopy (SEM). At higher milling speed, W2C is found to be precipitated with a small amount of WC was formed. Crystallite size of copper is reducing while internal stra

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Wang, Ning, Xiao Zhan Yang, Jian Bao Li, Hong Lin, and Bo Chi. "Fabrication and Characterization of Porous Mullite Coating on Porous Silicon Carbide Support." Key Engineering Materials 280-283 (February 2007): 1301–4. http://dx.doi.org/10.4028/www.scientific.net/kem.280-283.1301.

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Mullite powders of stoichiometric composition were synthesized by sol-gel process with TEOS and Al(NO3)3·9H2O as silicon and aluminum source. Homogeneous mullite powders were used as the starting materials to prepare the porous mullite coating on the porous silicon carbide support by repeated dip-coating method. XRD analysis revealed that the mullite precursor gels almost completely transformed to orthorhombic crystalline mullite at 1200°C. The average pore diameter and porosity of the porous mullite coating were about 4.5µm and 52.3%, respectively.

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Pee, J. H., G. H. Kim, H. Y. Lee, and Y. J. Kim. "Extraction Factor Of Tungsten Sources From Tungsten Scraps By Zinc Decomposition Process." Archives of Metallurgy and Materials 60, no. 2 (2015): 1311–14. http://dx.doi.org/10.1515/amm-2015-0120.

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Abstract Decomposition promoting factors and extraction process of tungsten carbide and tungstic acid powders in the zinc decomposition process of tungsten scraps which are composed mostly of tungsten carbide and cobalt were evaluated. Zinc volatility was suppressed by the enclosed graphite crucible and zinc volatilization pressure was produced in the reaction graphite crucible inside an electric furnace for ZDP (Zinc Decomposition Process). Decomposition reaction was done for 2hours at 650°, which 100% decomposed the tungsten scraps that were over 30 mm thick. Decomposed scraps were pulverize

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DEHGHANZADEH, M., A. ATAIE, and S. HESHMATI-MANESH. "SYNTHESIS OF NANOSIZE SILICON CARBIDE POWDER BY CARBOTHERMAL REDUCTION OF SiO2." International Journal of Modern Physics: Conference Series 05 (January 2012): 263–69. http://dx.doi.org/10.1142/s2010194512002115.

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A mixture of silicon carbide nano-particles and nano-whiskers has been synthesized through solid state reduction of silica by graphite employing high energy planetary ball milling for 25 h and subsequent heat treatment at 1300-1700°C in dynamic argon atmosphere. Effects of process conditions on the thermal behavior, phase composition and morphology of the samples were investigated using DTA/TGA, XRD and SEM, technique, respectively. DTA/TGA analysis shows that silicon carbide starts to form at ~ 1250°C. Analysis of the XRD patterns indicates that the phase composition of the sample heat treate

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Silva, José F., Uilame Umbelino Gomes, Edalmy Oliveira de Almeida, Ariadne de Souza Silva, G. B. Pinto, and Carlson P. de Souza. "Study of the High Energy Milling Effect on Composite Alloy of EUROFER97 Steel Reinforced with Niobium Carbide." Materials Science Forum 730-732 (November 2012): 385–89. http://dx.doi.org/10.4028/www.scientific.net/msf.730-732.385.

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Several kinds of alloys Ni-based, Fe-based and Al-based oxide dispersion strengthened (ODS) and carbide dispersion strengthened (CDS) have been produced through mechanical alloying. Precipitation-strengthened or dispersion-strengthened steels are a kind of high strengthened steel using fine precipitation or dispersion of carbides. This work present a study of EUROFER97 steel powder reinforced with 3%wt of niobium carbide. The starting materials were wet-milled in a high-energy planetary ball mill for several times up to 5 hours. The ratio of ball to powder weight was 15:1. The milled powders w

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Chanadee, Tawat, Sutham Niyomwas, Kritsada Patcharasit, and Saowanee Singsarothai. "Effect of Mg Content on Synthesis of TiC Powder from Leucoxene by Self-Propagating High-Temperature Synthesis Method." ASEAN Journal of Scientific and Technological Reports 24, no. 3 (2021): 68–75. http://dx.doi.org/10.55164/ajstr.v24i3.243506.

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Titanium carbide (TiC) composite powder was synthesized via the self-propagating high-temperature synthesis (SHS) method using leucoxene as a source of titanium oxide (TiO2) and magnesium (Mg) as an initiator. The effect of Mg content on synthesized TiC composite powder was characterized in terms of chemical composition and morphology by X-ray diffraction (XRD) and scanning electron microscopy (SEM) techniques. Results showed that adding 1.5 moles Mg into the reactant system leached with 0.1 M hydrochloric acid solution was the optimal condition, and TiC was apparent in the XRD analysis at a p

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Ma, Ning, Zhen Xiong Cheng, Huan Tao Wu, and Fu Xing Ye. "Influence of Powder Structure on Decarburization and Microstructure of HVOF Sprayed WC-12wt.%Co Coatings." Advanced Materials Research 834-836 (October 2013): 609–12. http://dx.doi.org/10.4028/www.scientific.net/amr.834-836.609.

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In order to examine the influences of tungsten carbide particle size on decarburization behavior and microstructure of HVOF sprayed WC-Co coating, four kinds of agglomerated WC-12wt.%Co powders were deposited on mild steel substrates by using a high velocity oxy-fuel (HVOF) spray system. The phase compositions and microstructure of the feedstock powders and sprayed coatings were investigated by X-ray diffraction (XRD) analysis and scanning electron microscopy (SEM), respectively. The results showed that the decarburization became more serious with the decreasing of tungsten carbide particle si

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Itagaki, Hirotomo, Taisei Yachi, Hisato Ogiso, et al. "DC Arc Plasma Treatment for Defect Reduction in WC-Co Granulated Powder." Metals 10, no. 7 (2020): 975. http://dx.doi.org/10.3390/met10070975.

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Tungsten carbide–cobalt (WC–Co) agglomerated powder is widely used for additive manufacturing and spray coating, and a reduction in internal gaps in the powder is required to obtain a product of high quality. In this paper, we investigate plasma effects on agglomerated powder when WC–12%Co powder is directly subjected to direct current (DC) arc plasma treatment to reduce gaps in the WC–Co powder. We obtain a plasma-treated powder with reduced gaps among WC particles. Furthermore, plasma-treatment improves the sphericity of the powder particles, due to the spheroidization effect, so that the pe

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Kongkajun, Nuntaporn, Parinya Chakartnarodom, and Warunee Borwornkiatkaew. "The Fabrication of Refractory Cordierite from Aluminium Buff Mixture." Key Engineering Materials 690 (May 2016): 97–102. http://dx.doi.org/10.4028/www.scientific.net/kem.690.97.

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The aim of this work is to propose the utilization of aluminium buff from aluminium part manufacturer as a raw material for cordierite batch composition. The powder mixtures were compacted by uniaxial pressing. The green compacts were sintered at temperature in the range 1300-1400°C for 2 hours in air. The physical properties were characterized by Archimedes method, Brazilian test and dilatometry. Phase and microstructural analysis were done by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The XRD analysis showed the major phase was cordierite along with sapphirine as a secon

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Kim, J. S., I. T. H. Chang, C. Lucien Falticeanu, G. J. Davies, and Kyle Jiang. "A Study of Debinding Behavior and Microstructural Development of Sintered Al-Cu-Sn Alloy." Materials Science Forum 534-536 (January 2007): 769–72. http://dx.doi.org/10.4028/www.scientific.net/msf.534-536.769.

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A new approach is explored to achieve sintered aluminium alloy from metallic powder mixtures without compression or adding Mg. In this approach, mixtures of micron-sized aluminium powder (average size of 2.5 μm) and nano-sized alloying elemental powder of Cu and Sn (less than of 70nm), at appropriate proportions to compositions of Al-6wt%Cu, Al-6wt%Cu-3wt%Sn with and without adhesive binder were prepared by magnetic stirring. Then, the powder mixture was poured into a crucible and heat treated at a temperature of 600°C for 11 hours in inert atmosphere of N2 or Ar. In this paper, we investigate

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DELAVARI H., H., and M. KOKABI. "SILICON CARBIDE NANOWIRES FROM POLYVINYL ALCOHOL/SILICA ELECTROSPUN NANOFIBERS." Nano 06, no. 01 (2011): 41–45. http://dx.doi.org/10.1142/s1793292011002330.

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The catalyst-free synthesis of silicon carbide (SiC) nanowires was carried out from polyvinyl alcohol (PVA)/silica electrospun nanofibers at high temperature. Scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray powder diffraction (XRD), and thermogravimetery analysis (TGA) were employed to study morphology and formation of SiC nanowires. Based on the TGA analysis, the carbon yield was increased when inert gas flow rate and heating rate decreased and polymeric nanofibers has been stabilized. The XRD and TEM results showed that the produced nanowires were crystallin

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Bagheri, G. Ali, Parvin Abachi, Kazem Purazrang, and Abbas Rostami. "Production of Cu-TiC Nanocomposite Using Mechanical Alloying Route." Advanced Materials Research 829 (November 2013): 572–76. http://dx.doi.org/10.4028/www.scientific.net/amr.829.572.

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In this study, Cu-TiC nanocomposites were produced by high energy ball milling of elemental powders and in-situ formation of TiC in the copper matrix. Cu-40wt% Ti powder mixture were milled for 60 h, then graphite powder was added, subsequently milling was continued for further 10 h. Based on theoretical calculations, at this composite, the amount of TiC as reinforcement should be 60.25vol% (45.47wt%). The effect of milling time on solution progress of titanium in the copper lattice was studied by X-Ray diffraction analysis (XRD) with CuKα radiation. Considering XRD of Cu-40wt%TiC after 60 h m

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Ramirez, Ainissa G., Robert Sinclair, C. Girvin Harkins, and A. Robert Lin. "The Effects of Slider Material on the Gasification of Carbon." Journal of Tribology 124, no. 4 (2002): 771–74. http://dx.doi.org/10.1115/1.1467613.

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The influence of alumina and titanium carbide, components of magnetic recording sliders, on the carbon gasification reaction was investigated. Pure alumina and titanium carbide powders were each combined with graphite powder and subjected to thermogravimetric analysis (TGA). The molar ratio ranged from 0 to 20 mol percent; graphite powder was the balance. From the thermogravimetric analysis, the activation energy Ea of the reactions was determined. It was found that the activation energy for carbon gasification reduced slightly for increasing alumina mole percentage. Titanium carbide additions

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Murthy, Dr V. S. Srinivasa. "Experimental Investigation on Surface Roughness and Metal Removal Rate of Aluminium 2024 Alloy." International Journal for Research in Applied Science and Engineering Technology 9, no. 9 (2021): 1424–29. http://dx.doi.org/10.22214/ijraset.2021.38199.

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Abstract: The purpose of this work is to investigate experimentally the surface roughness and MRR while machining of aluminium 2024 alloy which is prepared by powder metallurgical technique. Aluminium 2024 alloy prepared with different composition such as Pure Al, 1.5 W% of Mg and 2-6 % of Cu powders. Powders are blended with ball milling machine according to the composition required and specimens are prepared in square shape die (25*25mm) by applying uniaxial load of 200Mpa. The sintering process was performed at 594 0C for 60 min and cooled at room temperature. SEM and XRD analysis was carri

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Radev, Dimitar D., and Ivan Uzunov. "Nanosized Silicon Carbide Obtained from Rice Husks." Solid State Phenomena 159 (January 2010): 153–56. http://dx.doi.org/10.4028/www.scientific.net/ssp.159.153.

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Two ways to obtain nanosized silicon carbide (SiC) powders from the products of thermal decomposition of rice hulls and posterior thermal and chemical treatment of SiO2-C precursors are shown in the present paper. The reagents and products were analyzed using BET, DTA, IR, XRD and SEM/TEM. Precursors obtained from rice husks containing pure SiO2 and a controlled SiO2-C ratio were used for the synthesis of SiC. The synthesis of SiC proceeded for 30-45 min in a graphite heater furnace under protective Ar atmosphere at relatively low temperatures (1450oC-1550oC). Nanosized dimensions of reagents

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Jang, Taehun, Mirang Byeon, Minji Kang, et al. "Investigating Structural and Surface Modifications in Ion-Implanted 4H-SiC for Enhanced Dopant Distribution Analysis in Power Semiconductors." Materials 17, no. 23 (2024): 5734. http://dx.doi.org/10.3390/ma17235734.

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This study aims to develop a reference material that enables precise management of dopant distribution in power semiconductors. We thoroughly investigate the structural and surface properties of 4H-silicon carbide (4H-SiC) single crystals implanted without annealing using aluminum (Al) and phosphorus (P) ions. Ion-implanted 4H-SiC was thoroughly evaluated using advanced techniques, including X-ray diffraction (XRD), field emission transmission electron microscopy (FE-TEM), atomic force microscopy (AFM), time of flight medium energy ion scattering (ToF-MEIS), and secondary ion mass spectrometry

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Tit, M. A., O. S. Yulmetova, A. G. Scherbak, V. D. Andreeva, and A. E. Kim. "Formation of functional niobium binary fine structures." Voprosy Materialovedeniya, no. 4(116) (February 20, 2024): 69–81. http://dx.doi.org/10.22349/1994-6716-2023-116-4-69-81.

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Technological schemes of niobium carbide and nitride formation obtained by thermal and laser treatment are developed. The results of X-ray powder diffraction (XRD) analysis are in agreement with theoretical evaluations based on thermodynamic calculations proving the effectiveness of suggested approach. The perspectives of a practical application of the proposed technological solutions for the cryogenic gyroscope manufacturing technology are presented.

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Abadian-Naeini, Fatemeh, Mohsen Mohsennia, and Mojtaba Bagherzadeh. "Preparation of Silica Nanoparticles from Waste Product of Zirconium Carbide Facility." Materials Science Forum 1088 (May 18, 2023): 111–22. http://dx.doi.org/10.4028/p-w9gl72.

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Herein, silica nanoparticles (SiO2 NPs) were synthesized from a waste product of the zirconium carbide facility (WPZF). Firstly, the WPZF was characterized by using physical and chemical methods like X-ray powder diffraction (XRD), field emission scanning electron microscope (FE-SEM), Fourier-transform infrared spectroscopy (FT-IR), and energy dispersive X-ray analysis (EDXA) methods. Then WPZF proceeded via chemical reagents to synthesize SiO2 NPs by using the sol-gel method. Obtained SiO2 NPs were characterized by using XRD, SEM, EDXA, and transmission electron microscopy (TEM) methods. The

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Pardo, Pablo, Marek Andrzej Kojdecki, José Miguel Calatayud, José María Amigó, and Javier Alarcón. "Crystalline microstructure of boehmites studied by multi-peak analysis of powder X-ray diffraction patterns." Powder Diffraction 32, S1 (2017): S87—S98. http://dx.doi.org/10.1017/s0885715617000641.

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Nanocrystalline boehmite (gamma-aluminium-oxyhydroxide) is a material of industrial importance, the functionality of which follows from its crystalline microstructure. A procedure for preparing boehmite nanoparticles, comprising the formation of a precipitate by the alkalization of an aqueous solution of aluminium nitrate and subsequent hydrothermal aging, was previously elaborated. The application of an additive (maltitol or tartaric acid) to control the sizes and shapes of crystallites in the produced polycrystalline powder of boehmite was developed. The aim of this work is a study of the ef

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Shao, Xing Hai, Jing Pei Xie, Wen Yan Wang, Yan Li, Pin Gan Zhou, and Hui Wu Yu. "Wear Resistance of Nano TiN Strengthen High Chromium Cast Iron." Applied Mechanics and Materials 217-219 (November 2012): 2410–13. http://dx.doi.org/10.4028/www.scientific.net/amm.217-219.2410.

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The effects and the mechanisms of namo TiN on the high chromium cast iron are studied, the material has been prepared through infiltration casting and addition of high carbon ferrochrome powder and nano TiN powder. The alloy is formed on the surfaced of guide plate, and the wear resistance of alloy have been studied by means of SEM, XRD micro-analysis and wear-resistant performance. The grain size and the type of carbide in the organization are affected by nano TiN, and the wear resistance of carbon chromium alloy layer is affected by the type of carbide; when the addition of nano TiN is 1% (w

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43

Chaus, Alexander S., Matej Beznák, Ján Porubský, and J. Sojka. "Effect of Austenitising Temperature on Microstructural Changes in High-Speed Steel of M2 Type Inoculated with Addition of WC Powder." Defect and Diffusion Forum 333 (January 2013): 27–32. http://dx.doi.org/10.4028/www.scientific.net/ddf.333.27.

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The transformation of the solidification microstructure in AISI M2 grade high-speed steel inoculated with powder addition of WC have been studied focusing on the effect of austenitisation. In order to investigate the kinetics of both the microstructure and phase transformations in eutectic carbides, primarily M2C carbide decomposition, upon heat treatments with respect to diffusion processes, electron scanning microscopy, XRD analysis and EDS have been used.

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Ji, Luo, Lin Tao, Zhi Meng Guo, and Cheng Chang Jia. "Vacuum Carburization of Nanometer Tungsten Powder with Carbon Black." Materials Science Forum 534-536 (January 2007): 165–68. http://dx.doi.org/10.4028/www.scientific.net/msf.534-536.165.

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Vacuum carburization of nanometer tungsten powder was investigated in a simple designed apparatus. An X-Y recorder was used to plot differential thermal analysis (DTA) curves to determine the starting temperature of carburization of four samples with different specific surface area. The product was characterized by X-ray Diffraction (XRD) and small angle X-ray scattering (SAXS). The results show that finer tungsten powder has lower starting temperature of carburization. Tungsten powder, the BET surface area of which is 32.97m2/g, was completely carburized to tungsten carbide at 1050°C, even th

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Lakshmipathy, J., Subburaj Rajesh Kannan, K. Manisekar, and S. Vinoth Kumar. "Effect of Reinforcement and Tribological Behaviour of AA 7068 Hybrid Composites Manufactured through Powder Metallurgy Techniques." Applied Mechanics and Materials 867 (July 2017): 19–28. http://dx.doi.org/10.4028/www.scientific.net/amm.867.19.

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In this article, an attempt was made to study the mechanical behaviour of AA7068 - 6 vol. % of MoS2 - X vol. % of WC (X = 0, 5, 10 and 15) hybrid aluminium composites produced by blend–press–sinter methodology. Compacted Powders (700MPa) were sintered at different temperatures (450 0c, 500 0c and 550 0c ) in order to find the influence of sintering temperature on mechanical properties and tribological behavior of AA7068 hybrid composites.The sintered samples have been characterized by x-ray diffraction (XRD) method for identification of phases and also to investigate the phase changes. The cha

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Munhoz Jr., Antônio Hortencio, Heber Silvestre da Silva, Marcos V. Yamamoto, et al. "Alpha-Alumina Synthesis." Materials Science Forum 912 (January 2018): 27–32. http://dx.doi.org/10.4028/www.scientific.net/msf.912.27.

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The development of ceramic matrix composites (CMCs) is currently of great importance in the field of ballistic protection. For that purpose, alumina, silicon carbide and boron carbide are usually used in civil and military armor. Combination of different materials results in increasingly lighter and tougher composite materials, which replace conventional materials in many applications, including aviation, aerospace, military, naval, and sports industry. The production of nanoparticle powders and nanostructured bodies may find many uses in CMCs. In this study, pseudoboehmite powders was synthes

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Omar, Nurul Amanina Binti, Frank Hahn, Frank Koester, and Andreas Bund. "Electroless Deposition of Nickel-Phosphorus Composite Layer with Incorporated Amorph Boron Particles and Subsequent Heat Treatment for the Formation of Nickelboride." ECS Meeting Abstracts MA2022-01, no. 22 (2022): 1111. http://dx.doi.org/10.1149/ma2022-01221111mtgabs.

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In an effort to decrease the operating cost in the manufacturing industries, industrial knives and large tools in the forming technology should possess characteristics that increase its lifetime. One such properties would be the high surface hardness and a possibility to improve this characteristic would be through boriding. Through this method, whereby boron powder or paste is spread on the tool surface before the workpiece is heated in the oven at 750 – 950 °C for 4 – 6 h, a diffusion process occurs between the boron paste and the substrate. Borides are formed in the workpiece until a depth

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Gokul Raja, T. S., S. Balamurugan, and A. Reshma. "Synthesis, Different Characterizations and Pigment Application of Nanoceramic Zirconate Powder." Journal of Nanoscience and Nanotechnology 21, no. 4 (2021): 2212–20. http://dx.doi.org/10.1166/jnn.2021.19040.

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In this work, several attempts were made to prepare nanoceramic zirconate (Nd2Zr2O7) powder for pigment applications. The single pyrochlore phase, Nd2Zr2O7 was successfully synthesized with the aid of flux at relatively low temperature (1000 °C) upon milling the reaction mixture made from Nd2O3 and ZrO2 in a tungsten carbide vial. Several characterizations were done on the thermal analysis (TG/DTA), X-ray diffraction (XRD), High-resolution scanning electron microscope (HRSEM), energy dispersive X-ray (EDX) analysis, Fourier-transform infrared (FT-IR) analysis, and near-infrared (NIR spectrosco

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Mendes, Marcio W. D., António Carlos P. Santos, Francisca de Fatima P. Medeiros, Clodomiro Alves Jr., A. G. P. Silva, and Uilame Umbelino Gomes. "Aluminothermic Reduction of Niobium Pentoxide in a Hydrogen Plasma Furnace." Materials Science Forum 514-516 (May 2006): 599–603. http://dx.doi.org/10.4028/www.scientific.net/msf.514-516.599.

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The aluminothermic reduction is a highly exothermal reaction between a metal oxide and aluminium. Conventionally this reaction is ignited by an electric resistance and the reaction products after cooling are in the form of a rigid block of mixed metal and aluminium oxide. In this work a new process of aluminothermic reduction is presented, in which the reaction is ignited by a hydrogen plasma. The niobium oxide and aluminium powders are high energy milled for six hours to form particles constituted of oxide and aluminum. Stoichiometric, substoichiometric and superstoichiometric mixtures were p

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Bakthavatchalam, Balaji, Khairul Habib, Namdev Patil, and Omar A. Hussein. "Microstructural analysis of Al6063/sic with calcium additives for hardness enhancement." MATEC Web of Conferences 225 (2018): 03007. http://dx.doi.org/10.1051/matecconf/201822503007.

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Microstructural Analysis plays an important role in enhancing the mechanical properties of metals and composites. Usually Aluminium Silicon Carbide (Al6063/SiC) alloys are mixed with strontium, sodium and antimony for high durability even though they are toxic and costly. As an alternative calcium is used as an alloying element to improve the mechanical property of Al6063/Sic alloy. In this paper Al6063 is chosen as the matrix material while Sic is used as a reinforcement where calcium powder is added to modify the silicon phase of the composite. Finally, concentration of Silicon carbide is va

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