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Journal articles on the topic 'Surface treatment layer'

Author: Grafiati

Published: 28 May 2022

Last updated: 30 July 2025

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1

Svéda, Mária, Dóra Janovszky, Kinga Tomolya, et al. "Ni Content Surface Layer Produced by Laser Surface Treatment on Amorphisable Cu Base Alloy." Materials Science Forum 649 (May 2010): 101–6. http://dx.doi.org/10.4028/www.scientific.net/msf.649.101.

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The aim of our research was to comparatively examine Ni content surface layers on amorphisable Cu base alloy produced by different laser surface treatments. Laser surface treatment (LST) techniques, such as laser surface melting, laser alloying and laser cladding, provide a wide range of interesting solutions for the production of wear and corrosion resistant surfaces. [1,2] With LST techniques, the surface can be: i) coated with a layer of another material by laser cladding, ii) the composition of the matrix can be modified by laser alloying. [3] Two kinds of laser surface treatment technolog

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2

Svéda, Mária, and András Roósz. "Development of Amorphous and Microstructured Surface Layer by Laser Surface Treatment." Materials Science Forum 752 (March 2013): 175–82. http://dx.doi.org/10.4028/www.scientific.net/msf.752.175.

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The aim of the research was to develop an amorphous and microstructured layer on non-amorphous alloys by laser surface treatment. The as-prepared Cu based master alloy ingots were imbedded in a metallic sinking with Wood metal to assure the good thermal conductivity during the laser treatment. The laser remelting, alloying and coating techniques were applied from the laser surface treatment techniques. The surface layer production and a subsequent rapid cooling were performed using CO2 laser and pulse and continuous modes of Nd:YAG laser. The characterization of the microstructure of the resul

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3

Scarano, Antonio, Francesca Postiglione, Ahmad G. A. Khater, Faez Saleh Al-Hamed, and Felice Lorusso. "A Novel Technique to Increase the Thickness of TiO₂ of Dental Implants by Nd: DPSS Q-sw Laser Treatment." Materials 13, no. 18 (2020): 4178. http://dx.doi.org/10.3390/ma13184178.

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High bone–implant contact is a crucial factor in the achievement of osseointegration and long time clinical success of dental implants. Micro, nano, microtopography, and oxide layer of dental implants influence tissue response. The lasers were used for achieving an implant surface with homogeneous micro texturing and uncontaminated surface. The present study aimed to characterize the implant surfaces treated by Nd: DPSS Q-sw Laser treatment compared to machined implants. A total of 10 machined implants and 10 lasered surface implants were evaluated in this study. The implant surfaces were eval

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4

Yilbas, Bekir S., Ihsan-ul-Haq Toor, and Jahanzaib Malik. "Laser surface treatment of aluminum composite: surface characteristics." Science and Engineering of Composite Materials 23, no. 5 (2016): 495–503. http://dx.doi.org/10.1515/secm-2014-0108.

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AbstractLaser treatment of an aluminum composite surface was carried out to improve tribological properties and corrosion resistance at the surface. The workpiece consists of 15% SiC and pure aluminum, and it is produced by hot pressing. The characteristics of the laser-treated surface were examined using optical and scanning electron microscopes, energy dispersive spectroscopy, X-ray diffraction, a micro-tribometer, and a potentiostat. Laser treatment was carried out by following a spiral scanning track at the surface. This provides a self-annealing effect of the lately formed laser tracks on

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5

Yilbas, B. S., Ihsan-ul-Haq Toor, Jahanzaib Malik, and F. Patel. "Laser treatment of high strength low alloy steel and electrochemical response of the surface." Industrial Lubrication and Tribology 67, no. 2 (2015): 166–71. http://dx.doi.org/10.1108/ilt-11-2013-0125.

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Purpose – The purpose of the present study is to report the results of the laser treatment of high-strength low-alloy (HSLA) steel surface and corrosion response of the treated surface that was carried out. Metallurgical and morphological changes in the laser-treated layer are also examined. Laser treatment of the alloy surface improves the surface properties; however, development of high thermal stress field in the treated layer can exceed the yielding limit of the alloy lowers, particularly, the corrosion resistance of the resulting surface. Design/methodology/approach – Pre-prepared workpie

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Tao, N. R., Jian Lu, and K. Lu. "Surface Nanocrystallization by Surface Mechanical Attrition Treatment." Materials Science Forum 579 (April 2008): 91–108. http://dx.doi.org/10.4028/www.scientific.net/msf.579.91.

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Based on strain-induced grain refinement, a novel surface mechanical attrition treatment (SMAT) technique has been developed to synthesize a nanostructured surface layer on metallic materials in order to upgrade their overall properties and performance without changing their chemical compositions. In recent several years, the microstructures and properties of surface layer were systematically investigated in various SMAT metals and alloys, including b.c.c., f.c.c. and h.c.p. crystal structures. Different grain refinement approaches and nanocrystalline formation mechanisms were identified in th

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7

Bonek, M. "Formation of Hard Composite Layer on Tool Steel by Laser Alloying." Archives of Metallurgy and Materials 61, no. 2 (2016): 719–24. http://dx.doi.org/10.1515/amm-2016-0123.

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Abstract Investigations include alloying the PMHSS6-5-3 steel surface layer with carbide and ceramic powders WC, VC, TiC, SiC, Si3N4 and Al2O3, using the high power diode laser (HPDL). Laser treatment is especially promising for solving contemporary surface engineering problems making it possible to focus precisely the delivered energy in the form of heat in the surface layer. The structural mechanism was determined of surface layers development, effect was studied of alloying parameters, method on structure refinement and influence of these factors on the mechanical properties of surface laye

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8

Labisz, Krzysztof, and Tomasz Tański. "Laser Surface Treatment of Cast Aluminium-Silicon Alloys." Solid State Phenomena 275 (June 2018): 30–40. http://dx.doi.org/10.4028/www.scientific.net/ssp.275.30.

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The reason of performing the investigations carried out in this work was to investigate the microstructure of the laser treated Al-Si-Cu cast aluminium alloy with the ceramic powder particles using High Power Diode Laser (HPDL) for remelting, and/or alloying. First of all the feeding and distribution of the powder in the surface layer of the alloyed and remelted AlSi7Cu material. Very important issue is the determination of the laser treatment parameters, especially the powder feeding rate, laser power, and scan rate to achieve an enhancement of the layer hardness for ensuring this cast alumin

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9

Zavalov, Y. N., A. V. Dubrov, P. S. Rodin, E. S. Makarova, and V. D. Dubrov. "Features of the combined technology based on laser metal deposition with layered laser heat treatment." Journal of Physics: Conference Series 2443, no. 1 (2023): 012003. http://dx.doi.org/10.1088/1742-6596/2443/1/012003.

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Abstract The results of combined using of laser metal deposition technology with layer-by-layer laser heat treatment technology are presented and the experimental setup is described to unite the laser metal deposition technology with layer-by-layer laser remelting and/or laser surface hardening implementation. The layers formed at the stages of laser metal deposition and additional layer-by-layer laser heat treatment alternate in the material. The ratio between the thicknesses of the layers obtained during crystallization at the laser metal deposition stage and at the laser remelting stage is

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10

Enomoto, Masatoshi, Sadao Kokubo, and Kazuhiro Nakata. "Surface Treatment of Aluminum Alloy with Laser Irradition to Increase Wear Resistance." Materials Science Forum 539-543 (March 2007): 404–10. http://dx.doi.org/10.4028/www.scientific.net/msf.539-543.404.

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Laser irradiating process with Nd-YAG laser is investigated in order to improve the adhesion and wear resistance of low pressure plasma sprayed layer on the surface of aluminum extruded shape using the atomized powder of Al-50mass%Fe, Al-15mass%Fe-17mass%Si and Al-50mass%Si. The effect of pulse energy of laser beam on the microstructure, micro hardness and wearing rate of these laser irradiated layers are evaluated. Laser irradiated layers have appeared more smooth surface and better adhesion than as sprayed layer. Depth profile of micro hardness where laser irradiated is respectively kept con

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11

Holota, Yu V., Ya A. Olefir, T. V. Dovbynchuk, and G. M. Tolstanova. "Carbohydrate composition of rat intestine surface mucus layer after ceftriaxone treatment." Ukrainian Biochemical Journal 88, no. 6 (2016): 35–44. http://dx.doi.org/10.15407/ubj88.06.035.

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12

Dudek, Agata, Barbara Lisiecka, Norbert Radek, Łukasz J. Orman, and Jacek Pietraszek. "Laser Surface Alloying of Sintered Stainless Steel." Materials 15, no. 17 (2022): 6061. http://dx.doi.org/10.3390/ma15176061.

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A characteristic feature of sintered stainless steel (SSS) is its porosity. Porosity results in a lower density of steel, making attractive components for producing lightweight structures and materials used in industry (e.g., the automotive industry or aerospace). Scientists also observe that porosity adversely affects steel’s properties, especially its strength properties. One of the proposals for improving the discussed properties is the use of surface treatment of sintered stainless steels, e.g., with the use of concentrated energy sources such as plasma beams or laser beams. However, this

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13

Tokarev, Aleksandr, Zinaida Bataeva, Gennadii Grachev, Aleksandr Smirnov, Maksim Khomyakov, and Artiom Gerber. "Laser-Plasma Treatment of Structural Steel." Applied Mechanics and Materials 788 (August 2015): 58–62. http://dx.doi.org/10.4028/www.scientific.net/amm.788.58.

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To conduct high production hardening modification of iron-carbon and titanium alloy surface layers a laser-plasma method (LPM) is developed. The method is based on the use of optical pulse discharge plasma. A discharge is ignited with laser pulses repeated with a high frequency by a CO2-laser oscillator - amplifier system. A laser pulse is focused on the treated surface. To form plasma in alignment with the beam in the laser head, a high velocity gas flow (air, nitrogen, argon, and carbon dioxide) is created. The pressure of the plasma-forming gas can reach 0.5 MPa, and the output speed of the

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14

Cherneta, Oleg, Vadim Kubich, Roman Voloshchuk, Vladimir Averyanov, Dmytro Shmatko, and . "Strengthening of the Restored Surface Layer of Steel Parts 45 by Laser Boring." International Journal of Engineering & Technology 7, no. 4.3 (2018): 71. http://dx.doi.org/10.14419/ijet.v7i4.3.19554.

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By means of the proposed technologies, the relationship and strengthening of the optimal modes of recovery of the restoring layer and the optimal laser treatment modes with bat-retaining straps are chosen. The microstructural, X-ray diffraction studies of the restored surfaces of the cams of the distributing shaft of the car were determined, the wear resistance and microhardness of the working surfaces were determined. By means of the proposed technologies of restoration and strengthening, optimum modes of applying the restoring layer and optimal modes of laser treatment (pumping energy of 20

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15

Kovaleva, M. G., M. N. Yapryntsev, S. V. Naumov, et al. "Study of structured pulsed laser surface treatment of the Ti6Al4V alloy." Laser Physics 35, no. 5 (2025): 055601. https://doi.org/10.1088/1555-6611/ada75a.

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Abstract Titanium and titanium alloys are widely used in aerospace, automotive and medical implants. In recent years, laser processing has attracted attention as a method to modify the surface properties of these alloys to improve their mechanical, chemical and biological properties. In this study, we present experimental data on the structure, chemical composition and morphology of titanium alloy Ti–6Al–4 V after laser processing. The Fiber Lasers IPG YLM-QCW-100 was used. The material was studied in order to better understand the nature of laser melting and laser-assisted ablation of the sur

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16

Bauer, I., and M. Paczkowska. "Effects of laser heat treatment of steel following diffusion chromizing." Journal of Achievements in Materials and Manufacturing Engineering 2, no. 83 (2017): 49–56. http://dx.doi.org/10.5604/01.3001.0010.7032.

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Purpose: This paper presents the findings of a study of laser heat treatment of C45 steel following diffusion chromizing. The aim of the study was to assess the effect of laser heating of steel subjected on the microstructure of its surface layer. Design/methodology/approach: Diffusion chromizing was conducted at the temperature of 1050°C for 8 hours in a LABOTHERM LH15/14 laboratory furnace. A powder mixture of the following composition was used to produce the layer: Cr2O3 with an addition of Al, kaolin and an activator – ammonium chloride NH4Cl. Diffusion chromizing of C45 steel was followed

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17

Napadłek, Wojciech, and Adam Woźniak. "Influence of Laser Ablation Texturing on the 40NiCrMo6 Steel Surface Layer." Key Engineering Materials 604 (March 2014): 24–27. http://dx.doi.org/10.4028/www.scientific.net/kem.604.24.

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Laser texturing of the surface layer of materials is a modern technology with its significant prospects for production of engineering machinery. Produced with this technology oil micro-containers have a major impact on the tribological cooperation improving. The article presents methodology and results of laser texturing of surface layer of alloy steel 40NiCrMo6. The material is usually applied for foot rod of combustion engines production. Application of the laser ablation micro treatment on the side surfaces the foot of the rod allowed to fabricate desired texture in the surface layer, made

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18

Svéda, Mária, András Roósz, Gábor Buza, and László Kuzsella. "A Comparative Examination of the Friction Coefficient of two Different Sliding Bearing." Materials Science Forum 473-474 (January 2005): 471–76. http://dx.doi.org/10.4028/www.scientific.net/msf.473-474.471.

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The aim of this research work is to investigate the sliding properties of the monotectic surface layers developed by a laser surface-treatment technology. The coatings-remelting technology has been chosen from the laser surface treatment methods. The surface of Al-Si alloy was coated with a lead layer by galvanizing, then the basic material and the surface layer were remelted together by using laser beam produced a monotectic Al- Pb surface layer. The structure of monotectic surface layer has been determined by means of a light microscope and scanning electron microscope. The sliding propertie

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19

Ghayad, Ibrahim M., Madiha Shoeib, Taha Mattar, and Huda M. Hussain. "Enhancing Corrosion Resistance of Stainless Steel 304 Using Laser Surface Treatment." Key Engineering Materials 384 (June 2008): 157–83. http://dx.doi.org/10.4028/www.scientific.net/kem.384.157.

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Stainless steel AISI 304 was laser treated to enhance corrosion resistance and improve surface properties. . This alloy has many applications in auto industry (car body,) as well as oil and gas industry. Different conditions were applied in the laser surface treatment, namely: laser power density, scan speed, distance between paths, medium gas (air, argon and nitrogen). After laser treatment, the samples microstructures were investigated using optical microscope to examine micro structural changes due to laser irradiation. Specimen surfaces were investigated using XRD, SEM and EDAX before and

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20

Ghayad, I. M., M. A. Shoeib, T. Mattar, R. M. AbuShhaiba, and H. M. Hussein. "Enhancing Corrosion Resistance of Stainless Steel 304 Using Laser Surface Treatment." Eurasian Chemico-Technological Journal 9, no. 2 (2007): 81–89. https://doi.org/10.18321/ectj258.

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Stainless steel AISI 304 was laser treated to enhance corrosion resistance and improve surface properties. This alloy has many applications in auto industry (car body) as well as oil and gas industry. Different conditions were applied in the laser surface treatment, namely: laser power density, scan speed, distance between paths, medium gas (air, argon and nitrogen). After laser treatment, the samples microstructures were investigated using optical microscope to examine microstructural changes due to laser irradiation. Specimen surfaces were investigated using XRD, SEM and EDAX before and afte

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21

Petram, Rohin, Conall Wisdom, Alex Montelione, et al. "Removing Alpha Case from Laser Powder Bed Fusion Components by Cavitation Abrasive Surface Finishing." Materials 18, no. 9 (2025): 1977. https://doi.org/10.3390/ma18091977.

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Laser powder bed fusion (L-PBF) has become a highly viable method for manufacturing metal structural components for a variety of industries. Despite many attractive qualities, the rough surfaces of L-PBF components often necessitates post-processing treatments to improve the surface finish. Furthermore, heat treatments are generally necessary to control the microstructure and properties of L-PBF components, which can impart a detrimental surface oxide layer that requires removal. In this investigation, cavitation abrasive surface finishing (CASF) was adopted for the surface treatment of Ti6Al4

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22

Li, Bin, Jinxing Li, Xiaojian Zhou, Jun Zhang, Taohong Li, and Guanben Du. "Study of Gliding Arc Plasma Treatment for Bamboo-Culm Surface Modification." Forests 10, no. 12 (2019): 1086. http://dx.doi.org/10.3390/f10121086.

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Plasma treatment was conducted to modify the outer- and inner-layer surfaces of bamboo in a multi-factor experiment, where the surface contact angles and surface energy were measured, followed by investigation on the surface microstructure and functional groups using a scanning electron microscope (SEM) and X-ray photoelectron spectroscopy (XPS), respectively. The result showed that when the power of the gliding arc plasma treatment was 1000 W while the bamboo surface was 3 cm away from the nozzle of the plasma thrower in the plasma flame, the contact angles of the outer- and inner-layer surfa

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23

Rozmus-Górnikowska, Magdalena, Łukasz Major, and Jerzy Morgiel. "SEM and TEM Microstructure Characterization of a Commercial Purity Aluminum after Laser Treatment." Solid State Phenomena 186 (March 2012): 323–26. http://dx.doi.org/10.4028/www.scientific.net/ssp.186.323.

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The effect of the Laser Shock Processing (LSP) on the microstructure of the surface layer of a commercially pure alluminum was studied. LSP process was performed with a high-power Q-switched Nd:YAG ReNOVALaser, operating in a pulse mode (18 ns), with a power density of 0,43 GW/cm2. Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM) and a Scanning Transmision Electron Microscopy (STEM) have been used to study the microstructure of the surface layer of the investigated material after laser treatment. SEM investigation showed that after LSP process surface melting occurs b

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Labisz, Krzysztof, and Tomasz Tański. "Surface Properties Enhancement of Light Alloys by Appliance of Laser Treatment." Solid State Phenomena 308 (July 2020): 119–37. http://dx.doi.org/10.4028/www.scientific.net/ssp.308.119.

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Laser surface treatment is at present one of up-to-date methods for surface layer engineering, in this technique into the matrix material are introduced some amount of alloying additives. So the surface layer is obtained in form of composite material consisting of ceramic particle powders with different properties influencing the surface layer appliance possibilities. Using the technology it is possible to obtain a layer revealing a structured structure consisting of the heat affected zone (HAZ), transition zone (TZ) and remelted zone (RZ), as well as the substrate material. The laser is witho

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Bartkowska, A., A. Pertek, M. Jankowiak, and K. Jóźwiak. "Laser Surface Modification of Borochromizing C45 Steel." Archives of Metallurgy and Materials 57, no. 1 (2012): 211–14. http://dx.doi.org/10.2478/v10172-012-0012-9.

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Laser Surface Modification of Borochromizing C45 SteelIn this study the test results for borochromized C45 steel after laser surface modification were presented. Influence of laser heat treatment on the microstructure and microhardness of surface layer was investigated. The process of borochromizing consisted of chromium plating followed by diffusion boronizing. The laser heat treatment (LHT) of multiple tracks in the helical line was carried out with CO2laser beam. The technological laser TRUMPF TLF 2600 Turbo CO2of the nominal power 2.6 kW was applied. Borochromizing was carried out with las

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26

Dasaev, M. R., O. V. Kalakuckaya, E. S. Trushin, S. V. Grigoriev, and O. V. Ryzhenkov. "Effect of laser treatment on zinced steel surface wettability and corrosion resistance." Journal of Physics: Conference Series 2388, no. 1 (2022): 012083. http://dx.doi.org/10.1088/1742-6596/2388/1/012083.

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Abstract The paper presents the results of experimental studies to determine the effect of surface treatment of galvanized steel using laser equipment on wettability properties and corrosion resistance. It is shown that laser texturing of the roughness on the zinc layer contributes to the achievement of the hydrophobic state. It is noted that during ablation and discontinuity of the zinc layer on the steel surface, the hydrophobic state is achieved only due to the formation of molecular layers of the surfactant. An increase in the corrosion resistance of galvanized steel was achieved by activa

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KOSIYUK, M., and S. KOSTYUK. "MACHINE FOR STRENGTHENING EXTERNAL SURFACES OF ROTATION BY STATIC-PULSE TREATMENT." Herald of Khmelnytskyi National University. Technical sciences 291, no. 6 (2020): 101–6. https://doi.org/10.31891/2307-5732-2020-291-6-101-106.

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The article considers the main aspects of the machine to improve working capacity parts with sphericals and cylindricals surfaces bipolar static-pulse processing. The aim of the work is to generalize the results of research on the development of technology and equipment for strengthening cylindricals and incomplete sphericals surfaces of machine parts by surface plastic deformation. The authors conducted a set of theoreticals and experimentals studies of static-pulse processing, which allows to strengthen the surface layer of parts in a combined static and dynamic force. To increase the produc

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Xie, Shijing, Ruizhi Meng, Tong Shi, et al. "Effect of Laser Surface Treatment on the Corrosion Resistance of Zircaloy-4 at High Temperature." Applied Sciences 14, no. 12 (2024): 4977. http://dx.doi.org/10.3390/app14124977.

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A 700 V pulsed laser was used for the surface treatment of Zircaloy-4. Phases including the treatment layer, morphology and the distributions of alloying elements of the treatment layer were detected via X-ray diffraction (XRD), scanning electron microscope (SEM) and transmission electron microscope (TEM). The results showed that the laser surface treatment (LST) layer is also α-Zr phase layer, the morphology of the treatment layer was “cauliflower-like” and the Fe-Cr precipitates in the LST layer were dissolved. The corrosion tests of the LST and the no-laser surface treatment (NLST) specimen

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Wu, Jiaoyi, Dongya Zhang, and Xiaodong Wang. "Surface Morphology Analysis of Laser Shock Peened 20CrMnTi Steel: A Statistical Evaluation." Metals 13, no. 10 (2023): 1673. http://dx.doi.org/10.3390/met13101673.

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Surface morphology impacts material performance and durability significantly. To gain a deeper understanding of the impact of laser shock peening (LSP) treatment on the surface morphology of materials and to explore more optimized LSP treatment strategies, this study presents an investigation into the surface morphology of 20CrMnTi steel following LSP treatment. Through the application of statistical analysis, the study examines the induced surface morphology variations resulting from both single-point repetitive LSP and multiple LSP treatments. Experimental results demonstrate significant alt

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Hasani-Sadrabadi, M. M., S. Pouraghaei, E. Zahedi, et al. "Antibacterial and Osteoinductive Implant Surface Using Layer-by-Layer Assembly." Journal of Dental Research 100, no. 10 (2021): 1161–68. http://dx.doi.org/10.1177/00220345211029185.

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Osseointegration of dental, craniofacial, and orthopedic implants is critical for their long-term success. Multifunctional surface treatment of implants was found to significantly improve cell adhesion and induce osteogenic differentiation of dental-derived stem cells in vitro. Moreover, local and sustained release of antibiotics via nanolayers from the surface of implants can present unparalleled therapeutic benefits in implant dentistry. Here, we present a layer-by-layer surface treatment of titanium implants capable of incorporating BMP-2–mimicking short peptides and gentamicin to improve t

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Kosec, Tadeja, Andraž Legat, Janez Kovač, and Damjan Klobčar. "Influence of Laser Colour Marking on the Corrosion Properties of Low Alloyed Ti." Coatings 9, no. 6 (2019): 375. http://dx.doi.org/10.3390/coatings9060375.

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In the field of surface treatment, laser colour marking can be used to produce coloured marks on the surfaces of metals. Laser colour markings can be applied to various materials, but on titanium alloys a wide spectra of vivid colours can be achieved. This study presents an analysis of the corrosion properties of laser treated surfaces that were exposed to aggressive environments. Different samples were prepared with laser light of various power intensities and processing speeds. The samples were prepared on low alloyed Ti. Electrochemical, spectroscopic and microstructural analyses were condu

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Mészáros, Béla, and Enikő Réka Fábián. "The Effect of Surface Machining on he Efficiency of Laser Surface Treatment." Acta Materialia Transylvanica 7, no. 2 (2024): 88–93. https://doi.org/10.33924/amt-2024-02-06.

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Laser surface treatment is increasingly used for surface hardening. In this series of experiments we studied the milling groove design effect on laser hardened surfaces at 42CrMo4 steel after corresponding laser parameters. Milled grooves of 0.25 mm, 0.50 mm and 0.75 mm depth were studied. The used diode laser and its set parameters had the same focus distance in all cases; however, the power and travel speed of the laser light were changed according to the previously developed experimental plan. Higher laser heat input resulted in a deeper hardened zone. The 45° V-profile milling, and hence t

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Tamarkin, M. A., E. E. Tishchenko, and V. G. Lebedenko. "Surface-layer quality in shot treatment." Russian Engineering Research 30, no. 2 (2010): 144–48. http://dx.doi.org/10.3103/s1068798x10020115.

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Paczkowska, Marta. "Modification of the Surface Layer of Grey Cast Iron by Laser Heat Treatment." Lubricants 12, no. 12 (2024): 457. https://doi.org/10.3390/lubricants12120457.

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This paper presents possible modifications to the properties of grey cast iron by laser heat treatment. These modifications are analyzed especially with regard to wear properties as a result of graphite content, which is a well-known solid lubricant. Examples of applications of grey cast iron in cases where good wear resistance is required are presented. Laser hardening from the solid state, laser remelting, and laser alloying are characterized. In this study, changes in the surface layer caused by these treatments were analyzed (especially the influence on the microstructure—including graphit

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35

Marinin, E., S. P. Grachev, and A. L. Flaxman. "Increasing the Intensity of Cementation Process of Tool Low-Alloy Steels by Surface Laser Treatment." Materials Science Forum 870 (September 2016): 377–82. http://dx.doi.org/10.4028/www.scientific.net/msf.870.377.

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This work considers the questions of low-alloy tool steel cementation by laser treatment. The model of surface layer carbon saturation from the laser-induced plasma is shown. It is described that the diffusion process in the laser treatment can not be explained only by the influence of temperature gradient. The results of the experimental work confirmed the increasing intensity of the process surface layer saturation with carbon. The work describes the influence of the laser emission power on surface layer microstructure formation. The test results of the hardened samples showed an approximate

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36

Oleksandr, Danyleiko, Dzhemelinskyi Vitaliy, and Lesyk Dmytro. "Increasing wear and corrosion resistance of steel products by combined laser thermomechanical treatment." Eastern-European Journal of Enterprise Technologies 6, no. 1 (114) (2021): 72–80. https://doi.org/10.15587/1729-4061.2021.247552.

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A technique is presented for hardening metal products, in particular, the main tools (hammers) and cases of core drilling bits made of steel 30HGSA, using thermomechanical surface treatment according to a separate scheme. The method of combined laser thermomechanical hardening used in the study consists in the use of shot peening followed by laser heat treatment. Its use makes it possible to increase the operational properties of steel products, in particular, their wear and corrosion resistance. Based on the results of theoretical and experimental studies, the paper substantiates the features

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Ramdan, Raden Dadan, Joy Rizki Pangestu Djuansjah, Rochim Suratman, Esah Hamzah, and Sudin Izman. "Effect of Cold Rolling Treatment on the Formation of Titanium Oxide Layer on Ti6Al4V Alloys by Thermal-Electrochemical Anodizing Processes." Materials Science Forum 737 (January 2013): 54–59. http://dx.doi.org/10.4028/www.scientific.net/msf.737.54.

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The present work concerns on preparing suitable titanium alloy substrate that might induce better characteristic of titanium oxide layer on the substrate. Different degree of cold rolling treatments were applied on Ti6Al4V alloy before thermal-electrochemical anodizing processes. The later processes were performed to produce titanium oxide layer which combines thermal process by heat treatment and followed with electrochemical anodizing process. After thermal heat treatment process, it was observed more homogeneous titanium oxide layer for the samples given cold rolling treatment as compared w

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Romoli, L., G. Lazzini, L. Gemini, and F. Fuso. "Influence of skin-layer microstructure in ultrafast laser surface treatment." CIRP Annals 67, no. 1 (2018): 567–70. http://dx.doi.org/10.1016/j.cirp.2018.04.007.

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Dmytro, Lesyk, Dzhemelinskyi Vitaliy, Mordyuk Bohdan, et al. "Surface quality improvement of steel parts by combined laser-ultrasonic treatment determination algorithm of technological parameters." Eastern-European Journal of Enterprise Technologies 2, no. 12 (122) (2023): 17–26. https://doi.org/10.15587/1729-4061.2023.277252.

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To provide the quality of the surface layer and improve operational properties, a combined laser-ultrasonic surface hardening and finishing technology of steel products is proposed. This work is devoted to determining the range of rational parameters of laser heat treatment and ultrasonic impact treatment for enhancing the complex hardening process of AISI 1045 steel and AISI D2 steel. Laser surface transformation hardening was carried out with a constant temperature strategy using a fiber laser and scanning optics at a heating temperature of 1200–1,300 °C and a processing speed

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Türkan, Uğur, Mustafa Güden, and Mert Sudağıdan. "Staphylococcus epidermidis adhesion on surface-treated open-cell Ti6Al4V foams." Biomedical Engineering / Biomedizinische Technik 61, no. 3 (2016): 299–307. http://dx.doi.org/10.1515/bmt-2015-0007.

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AbstractThe effect of alkali and nitric acid surface treatments on the adhesion ofStaphylococcus epidermidisto the surface of 60% porous open-cell Ti6Al4V foam was investigated. The resultant surface roughness of foam particles was determined from the ground flat surfaces of thin foam specimens. Alkali treatment formed a porous, rough Na2Ti5O11surface layer on Ti6Al4V particles, while nitric acid treatment increased the number of undulations on foam flat and particle surfaces, leading to the development of finer surface topographical features. Both surface treatments increased the nanometric-s

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Morozov, V., V. G. Gusev, and D. Gavrilov. "Elasticity Modulus and Hardness of Bearing Steel after Laser Treatment." Key Engineering Materials 887 (May 2021): 247–53. http://dx.doi.org/10.4028/www.scientific.net/kem.887.247.

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The article considers the effect of laser treatment of bearing steel on the change in the elasticity modulus and hardness of the steel SHH15SG. Multi-factor models were obtained that relate the output parameters to the power W of laser radiation, the longitudinal feed Spr of the laser beam and the distance L from the protective glass of the focusing head to the workpiece surface. According to the degree of reduction of the influence on the elastic modulus of steel SHH15SG subjected to laser treatment, these factors are arranged in a sequence: W, Spr, and L. With increasing W and L the modulus

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Meier-Haack, J., and T. Carroll. "Use of graft-modified membranes for water treatment." Water Supply 3, no. 5-6 (2003): 385–92. http://dx.doi.org/10.2166/ws.2003.0193.

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Membranes with designed surface and filtration properties were prepared by grafting and adsorption of polyelectrolyte multilayer systems on membrane surfaces using the layer-by-layer electrostatic self-assembly technique. Microfiltration membranes with a first polyelectrolyte layer grafted onto the surface showed excellent stability during the filtration process. Although a two-fold higher permeate flux was observed for a three-layer polyelectrolyte complex membrane compared to a just grafted one, the protein retention did not change remarkably. Additionally, a reduced protein adsorption was d

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Kutepov, S. N., D. S. Klementyev, and M. M. Spiridonova. "Ensuring the quality indicators of the surface layer of parts made of 30KhGSA steel by laser microstructuring." Proceedings of the Southwest State University. Series: Engineering and Technology 14, no. 4 (2024): 18–33. https://doi.org/10.21869/2223-1528-2024-14-4-18-33.

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The purpose of the work was to study the influence of laser microstructuring modes on the formation of qualitative indicators (the length of the laser exposure zone, microhardness) of the surface layer of parts made of hot-rolled sheet steel grade 30KhGSA.Methods. The structural medium-alloy steel of the 30KhGSA grade in the hot-rolled state (sheet 6 mm thick) was chosen as the object of research. Special samples were produced by laser cutting to study changes in the structure, structure and microhardness of the laser exposure zone. After laser cutting, one of the sides of the sample was subje

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Ren, Chong Gang, De Guang Shang, Chang Gang Nai, Lu Wang, and Tao Chen. "Mechanism of Healing Fatigue Damage by Pulsed Laser Surface Irradiation for Polycrystalline Copper Film." Advanced Materials Research 538-541 (June 2012): 1866–69. http://dx.doi.org/10.4028/www.scientific.net/amr.538-541.1866.

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The mechanism of healing fatigue damage was investigated by pulsed laser surface irradiation for polycrystalline copper film, X-ray Diffraction(XRD), optical microscopic and scanning electron microscopy(SEM). The results indicate that surface melting and grain refinement were found in the melted surface layer. Tensile residual stresses were introduced in the resolidified surface layer due to laser surface melting which produced deleterious effect on fatigue property. Remelting and grain refinement in the surface layer is mainly responsible for healing fatigue damage and fatigue life improvemen

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Chen, Jie, Yongqiang Hu, Pengfei Wang, et al. "Strength–Ductility Mechanism of CoCrFeMnNi High-Entropy Alloys with Inverse Gradient-Grained Structures." Materials 17, no. 7 (2024): 1695. http://dx.doi.org/10.3390/ma17071695.

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The microstructures and mechanical properties of equiatomic CoCrFeMnNi high-entropy alloys (HEAs) treated with various processing parameters of laser surface heat treatment are studied in this paper. The typical inverse gradient-grained structure, which is composed of a hard central layer and a soft surface layer, can be obtained by laser surface heat treatment. A much narrower gradient layer leads to the highest yield strength by sacrificing ductility when the surface temperature of the laser-irradiated region remains at ~850 °C, whereas the fully recrystallized microstructure, which exists f

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Zhang, Li, Zheng Tan, Chong Zhang, et al. "Research on Metal Corrosion Resistant Bioinspired Special Wetting Surface Based on Laser Texturing Technology: A Review." Micromachines 13, no. 9 (2022): 1431. http://dx.doi.org/10.3390/mi13091431.

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Metal substrates are widely used in engineering production. However, material life reduction and economic loss due to chemical and electrochemical corrosion are a major problem facing people. Electrochemical corrosion is the main corrosion mode of metals, such as seawater corrosion. It is found that the superhydrophobic surface treated by laser texturing plays an important role in the corrosion resistance of the substrate, with the laser texturing process and post-treatment affecting the corrosion resistance. The corrosion resistance is positively correlated with the superhydrophobic property

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Gurov, Roman, and Andrey Shcherbakov. "Finish-strengthening treatment with surface-plastic deformation." Science intensive technologies in mechanical engineering 2021, no. 4 (2021): 3–9. http://dx.doi.org/10.30987/2223-4608-2021-4-3-9.

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There are offered dependences for the definition of parameters formed for surface layer quality when finishing and finish-strengthening with surface-plastic deformation, for the definition of processing modes, tool geometrical parameters taking into account initial parameters of surface layer quality. Criteria for the choice of the processing method ensuring quality parameters required for a surface layer and surface operation properties are offered.

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Zhou, X., Y. Younes, D. Wadeson, T. Hashimoto, and George E. Thompson. "Corrosion Control of Friction Stir Welded Aluminium Airframe Alloy." Advanced Materials Research 38 (March 2008): 298–305. http://dx.doi.org/10.4028/www.scientific.net/amr.38.298.

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In the present study, microstructure and its influence on corrosion behaviour of friction stir welded aluminium airframe alloy have been investigated. Further, the effect of laser surface treatment on the microstructure and the corrosion behaviour was also assessed. The welded AA2024 alloy showed the expected zones associated with friction stir welding. Corrosion testing showed that modified microstructure reduced its corrosion resistance to localized corrosion, with the regions immediately outside TMAZ being most susceptible to corrosion. Laser treatment resulted in a melted near-surface laye

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Zhu, Shun Min, and Ya Dong Zhang. "The Microstructure and Wear-Resistant Properties of Laser Cladding Ni-Based WC Alloy on Q345 Steel Surface." Applied Mechanics and Materials 556-562 (May 2014): 189–92. http://dx.doi.org/10.4028/www.scientific.net/amm.556-562.189.

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With the laser cladding technology, 70%Ni60A+30%WC cladding layer was cladded on the surface of Q345 steel. And the phase, microstructure and wear resistance of cladding layer were analyzed. Experiments show that the Ni-based WC alloy laser cladding treatment on Q345 steel surface have a great upgrade on grain refinement, surface hardness and wear-resistance of Q345 steel surface.

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Li, Yu Zhong, and Jing Ping Liu. "Experimental Study of Laser Surface Treatment of Low-Carbon Ductile Iron." Applied Mechanics and Materials 155-156 (February 2012): 965–68. http://dx.doi.org/10.4028/www.scientific.net/amm.155-156.965.

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In the essay, the Low carbon ductile iron by laser surface alloying processing has been experimentally studied. Results indicate that on low carbon ductile iron matrix coated with different alloy powder, structure of laser surface alloying processing is very small, the combination quality between alloying layer and matrix is good. Low carbon ductile iron after laser surface treatment, maternal surface hardness are greatly enhanced, maternal surface hardness increasing from HV250~330 to the highest about HV1400, surface laser hardening effect of Low carbon ductile iron is very obvious.

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