Laser Heat Treatment and Wear Resistance of Electroless Plating Ni-P-Nano-Al2O3 Composite Coatings

2008 ◽  
Vol 35 (4) ◽  
pp. 610-614 ◽  
Author(s):  
郑晓华 Zheng Xiaohua ◽  
宋仁国 Song Renguo ◽  
姚建华 Yao Jianhua
Keyword(s):  
Heat Treatment ◽  
Wear Resistance ◽  
Electroless Plating ◽  
Composite Coatings ◽  
Laser Heat Treatment ◽  
Laser Heat ◽  
Al2o3 Composite

Research on Preparation and Properties of Antiwear and Anticorrosion Composite Coating Ni-P-SiC

2014 ◽  
Vol 988 ◽  
pp. 117-120
Author(s):  
Ya Min Li ◽  
Xing Zhang ◽  
Amin Wang ◽  
Hong Jun Liu
Keyword(s):  
Heat Treatment ◽  
Wear Resistance ◽  
Corrosion Resistance ◽  
Aluminum Alloy ◽  
Electroless Plating ◽  
Bonding Strength ◽  
Composite Coatings ◽  
Micro Hardness ◽  
Uniform Thickness ◽  
Structure And Morphology

Ni-P-SiC composite coatings on the surface of ZL102 aluminum alloy were prepared by direct electroless plating. The structure and morphology of the coatings after heat treatment at 400 °C for 1 hour were analyzed by XRD and SEM. The bonding strength, hardness, corrosion resistance and wear resistance of the coatings were tested. The results show that the coatings structure is crystalline and the main crystal phase is Ni3P. The SiC particles are evenly distributed in the coatings. The coatings have uniform thickness, high bonding strength and high micro hardness (up to 1395.28 HV.2). It is also shown that the substrate corrosion resistance and wear resistance can be considerably improved after electroless plating.

scholarly journals Improvement of Surface Properties of Inconel718 by HVOF Coating with WC-Metal Powder and by Laser Heat Treatment of the Coating

2015 ◽  
Vol 2015 ◽  
pp. 1-7 ◽  
Author(s):  
Hui Gon Chun ◽  
Tong Yul Cho ◽  
Jae Hong Yoon ◽  
Gun Hwan Lee
Keyword(s):  
Heat Treatment ◽  
Wear Resistance ◽  
Corrosion Resistance ◽  
Metal Powder ◽  
Surface Properties ◽  
Porous Coating ◽  
Wear Depth ◽  
Laser Heat Treatment ◽  
Hvof Coating ◽  
Laser Heat

High-velocity oxygen-fuel (HVOF) thermal spray coating with WC-metal powder was carried out by using optimal coating process on an Inconel718 surface for improvement of the surface properties, friction, wear, and corrosion resistance. Binder metals such as Cr and Ni were completely melted and WC was decomposed partially to W2C and graphite during the high temperature (up to 3500°C) thermal spraying. The melted metals were bonded with WC and other carbides and were formed as WC-metal coating. The graphite and excessively sprayed oxygen formed carbon oxide gases, and these gases formed porous coating by evolution of the gases. The surface properties were improved by HVOF coating and were improved further by CO2laser heat treatment (LH). Wear resistance of In718 surface was improved by coating and LH at 25°C and an elevated temperature of 450°C, resulting in reduction of wear trace traces, and was further improved by LH of the coating in reducing wear depth. Corrosion resistance due to coating in sea water was improved by LH. HVOF coating of WC-metal powder on a metal surface and a LH of the coating were highly recommended for the improvement of In718 surface properties, the friction behavior, and wear resistance.

Mechanical Milling Prepared Nano-Sized Al2O3 Particles Utilized in Electroless Plating Ni-P- Al2O3 Composite Coatings

2012 ◽  
Vol 602-604 ◽  
pp. 1700-1705 ◽  
Author(s):  
Ai Zhi Yu ◽  
Mao Dong Li ◽  
Jin Mei Lin ◽  
Shu Kuan Zhang
Keyword(s):  
Heat Treatment ◽  
Particle Size ◽  
Wear Resistance ◽  
Mechanical Milling ◽  
Chemical Method ◽  
Composite Coatings ◽  
Micro Hardness ◽  
Mechanical Method ◽  
Al2o3 Composite ◽  
Steel Substrates

In this paper, nano-sized Al2O3 particles were prepared by mechanical milling, and Ni-P-Al2O3 composite coatings were plated on Q235 steel substrates, which plating solutions were containing different concentrations Al2O3 particles. The morphology, phase and particle size distribution of the as-prepared Al2O3 particles, and the properties of the coatings were investigated. The results show that, the morphology of the as-prepared Al2O3 particles were spherical and almost size under 100nm, the coatings were uniformly thickness and the Al2O3 particles were uniformly dispersed in the coatings, after heat treatment, the micro-hardness and wear resistance of the coatings were significantly improved, compared with the chemical method prepared Al2O3 particles, the mechanical method prepared Al2O3 particles had the same performance in improving the micro-hardness of the coatings.

scholarly journals Effect of laser heat treatment on structure and wear resistance of cobalt stellite

2019 ◽  
Vol 1396 ◽  
pp. 012016
Author(s):  
E L Furman ◽  
E A Usoltsev ◽  
I S Bakhteev ◽  
I E Furman ◽  
A V Shak
Keyword(s):  
Heat Treatment ◽  
Wear Resistance ◽  
Laser Heat Treatment ◽  
Laser Heat

Research about Relation between the Microstructures and Mechanical Properties of Metal Coating Layers

2014 ◽  
Vol 216 ◽  
pp. 169-174
Author(s):  
Arthur Olàh ◽  
Mircea Horia Tierean
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Wear Resistance ◽  
Chemical Composition ◽  
Metal Coating ◽  
Laser Heat Treatment ◽  
Laser Heat ◽  
Coating Layers ◽  
Microstructures And Mechanical Properties

The paper presents the research about the correlation between the microstructures and mechanical properties of metal coating layers after laser heat treatment. The research was made with eight types of electrodes for welding coating. Laser heat treatment was applied after coating. Evaluation of results was made by observing the microstructures with metallographic microscopy, SEM/EDX and the mechanical properties were obtained by microhardness and wear resistance. The goal of this research is to study the influence of the laser heat treatment on wearing resistance of metal coating layers. Results reveal the influence of microstructures and chemical composition of used electrodes on microhardness and wear resistance of metal coating layers.

scholarly journals Mechanical Properties of Metal Coating Layers after Laser Heat

2020 ◽  
Vol 21 (2) ◽  
pp. 72-77
Author(s):  
Arthur Olah
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Wear Resistance ◽  
Chemical Composition ◽  
Metal Coating ◽  
Laser Heat Treatment ◽  
Laser Heat ◽  
Coating Layers

The goal of this research is to study the influence of the laser heat treatment on wearing resistance of metal coating layers. Results reveal the influence of microstructures and chemical composition of used electrodes on microhardness and wear resistance of metal coating layers. Laser heat treatment was applied after coating. Evaluation of results was made by observing the microstructures with metallographic microscopy, SEM/EDX and the mechanical properties were obtained by microhardness and wear resistance.

Influence of high-power diode laser heat treatment on wear resistance of a mold steel

2019 ◽  
Vol 33 (2) ◽  
pp. 829-836 ◽  
Author(s):  
Changkyoo Park ◽  
Jinwoo Kim ◽  
Ahjin Sim ◽  
In-duck Park ◽  
Ho Jang ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Wear Resistance ◽  
Diode Laser ◽  
High Power ◽  
Laser Heat Treatment ◽  
Laser Heat ◽  
Power Diode ◽  
High Power Diode Laser

scholarly journals Correlation between Microstructure and Tribological Properties of Laser Surface Heat-Treated Stellite Coatings

Coatings ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 433
Author(s):  
Chang-Kyoo Park ◽  
Jung-Hoon Lee ◽  
Nam-Hyun Kang ◽  
Eun-Joon Chun
Keyword(s):  
Heat Treatment ◽  
Wear Resistance ◽  
Tribological Properties ◽  
Superior Performance ◽  
Laser Heat Treatment ◽  
Continuous Casting Mold ◽  
Heat Treated Sample ◽  
Laser Heat ◽  
Heat Treated ◽  
Sprayed Coating

To manufacture superior-performance continuous casting mold components, high-velocity oxygen fuel spraying of a Stellite-1 coating was followed by its laser heat treatment at 1373–1473 K using a diode laser. The effects of the laser irradiation conditions on the macro- and microstructural variations along with the hardness and wear resistance within the Stellite-1 coating were evaluated. After the heat treatment, micro-voids within the sprayed coating decreased in number slightly with an increase in the heat treatment temperature. The hardness of the sprayed Stellite-1 coating increased from that of the as-sprayed coating (680 HV) after the laser heat treatment, with a hardness of 860 HV obtained at 1473 K. The cause of the increase in hardness could be the formation of nano-sized W- and Cr-based carbides such as WC, M7C3, and M23C6, as suggested by transmission electron microscopy analysis. The tribological properties of as-sprayed and laser heat-treated samples were investigated by a pin-on-disk tribometer. The laser heat treatment of Stellite-1 coating enhanced wear resistance. This resulted in a lower coefficient of friction and wear rate for the laser heat-treated sample than those for the as-sprayed sample.

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