scholarly journals Phase Transformation-Induced Improvement in Hardness and High-Temperature Wear Resistance of Plasma-Sprayed and Remelted NiCrBSi/WC Coatings

Metals ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 1688
Author(s):  
Jin Sha ◽  
Liang-Yu Chen ◽  
Yi-Tong Liu ◽  
Zeng-Jian Yao ◽  
Sheng Lu ◽  
...  
Keyword(s):  
Wear Resistance ◽  
High Temperature ◽  
Composite Coating ◽  
Composite Coatings ◽  
Hardness Test ◽  
Wear Volume ◽  
Dispersion Strengthening ◽  
High Temperature Wear ◽  
Nicrbsi Coating ◽  
Plasma Sprayed

The remelting method is introduced to improve the properties of the as-sprayed NiCrBSi coatings. In this work, tungsten carbide (WC) was selected as reinforcement and the as-sprayed and remelted NiCrBSi/WC composite coatings were investigated by X-ray diffraction, scanning electron microscopy, hardness test and tribology test. After spraying, WC particles are evenly distributed in the coating. The remelting process induced the decarburizing reaction of WC, resulting in the formation of dispersed W2C. The dispersed W2C particles play an important role in the dispersion strengthening. Meanwhile, the pores and lamellar structures are eliminated in the remelted NiCrBSi/WC composite coating. Due to these two advantages, the hardness and the high-temperature wear resistance of the remelted NiCrBSi/WC composite coating are significantly improved compared with those with an as-sprayed NiCrBSi coating; the as-sprayed NiCrBSi coating, as-sprayed NiCrBSi/WC composite coating and remelted NiCrBSi/WC composite coating have average hardness of 673.82, 785.14, 1061.23 HV, and their friction coefficients are 0.3418, 0.3261, 0.2431, respectively. The wear volume of the remelted NiCrBSi/WC composite coating is only one-third of that of the as-sprayed NiCrBSi coating.

Wear Performance of the Plasma Sprayed Fine WC-Co Composite Powders Coatings

2012 ◽  
Vol 454 ◽  
pp. 144-147
Author(s):  
Lian Wei Yang ◽  
Jin Hui Li ◽  
Yun Dong ◽  
Xiao Ping Lin
Keyword(s):  
Wear Resistance ◽  
Brittle Fracture ◽  
Composite Coating ◽  
Plasma Spraying ◽  
Composite Coatings ◽  
Composite Powders ◽  
Wear Performance ◽  
Wear And Friction ◽  
Plasma Sprayed ◽  
Increasing Load

WC/Co; Composite coating; Plasma spraying; Friction and wear Abstract: WC- Co composite powders were synthesized by direct mechanical grinding in a rotary-vibration mill under 8h, and then analyzed by SEM and XRD. WC and WC/Co composite coatings were prepared by supersonic plasma spraying fine WC-Co composite powders. The wear and friction properties of both coatings were evaluated. The results showed that the wear resistance of the WC/Co composite coating was superior to that of the WC coating. The improvement in wear resistance of the WC/Co composite coating was attributed to its higher fracture toughness and adhesion strength as well as better thermal diffusivity. As for the WC/Co composite coating, the mechanism was mainly adhesion with micro-abrasion and fatigued-induced brittle fracture within splats, and the delamination along splat boundaries only occurred at high load. However, the failure of the WC coating was predominantly detachment of transferred film and brittle fracture within the splats and delamination along splat boundaries, which were enhanced with the increasing load.

High temperature wear resistance of laser cladding NiCrBSi and NiCrBSi/WC-Ni composite coatings

Wear ◽  
2011 ◽  
Vol 270 (7-8) ◽  
pp. 492-498 ◽  
Author(s):  
Chun Guo ◽  
Jiansong Zhou ◽  
Jianmin Chen ◽  
Jierong Zhao ◽  
Youjun Yu ◽  
...  
Keyword(s):  
Wear Resistance ◽  
High Temperature ◽  
Laser Cladding ◽  
Composite Coatings ◽  
High Temperature Wear

Research on High-Temperature Wear Resistance of Laser Cladding Co-Based WC Composite Coating on Hot-Forging Die

Applied laser ◽  
2013 ◽  
Vol 33 (4) ◽  
pp. 370-375
Author(s):  
徐卫仙 Xu Weixian ◽  
张群莉 Zhang Qunli ◽  
姚建华 Yao Jianhua
Keyword(s):  
Wear Resistance ◽  
High Temperature ◽  
Composite Coating ◽  
Laser Cladding ◽  
Hot Forging ◽  
High Temperature Wear ◽  
Hot Forging Die ◽  
Forging Die

Microstructure and High Temperature Wear Resistance Performance of Co/Mesoporous WC Laser Composite Coating

2014 ◽  
Vol 41 (5) ◽  
pp. 0503002
Author(s):  
张群莉 Zhang Qunli ◽  
徐卫仙 Xu Weixian ◽  
姚建华 Yao Jianhua ◽  
陈赵扬 Chen Zhaoyang ◽  
马淳安 Ma Chunan
Keyword(s):  
Wear Resistance ◽  
High Temperature ◽  
Composite Coating ◽  
High Temperature Wear ◽  
Resistance Performance

scholarly journals Study on Wear Resistance of Ti-6Al-4V Alloy Composite Coating Prepared by Laser Alloying

2021 ◽  
Vol 11 (1) ◽  
pp. 446
Author(s):  
Quan Chen ◽  
Jiajia Zhang ◽  
Anguo Huang ◽  
Pengyu Wei
Keyword(s):  
Wear Resistance ◽  
High Temperature ◽  
Composite Coating ◽  
Turbine Blades ◽  
Alloy Coating ◽  
Yttrium Aluminium Garnet ◽  
Wear Volume ◽  
Wear Performance ◽  
Different Temperatures ◽  
The Impact

Titanium alloy has extensive applications in numerous fields, such as in aerospace, shipbuilding, petrochemical, and bio-medical. However, under the condition of high temperature (above 700 °C), it is difficult to meet the requirements of the performance of the turbine blades, piston rings, valves, etc. In this paper, the alloy powder is composed of Ni60A, TiN, Al, and Si in accordance with the proportion of 1:3:4:2 (mass ratio), and the composite coating, such as TiN, TiB, Ti5Si3, and Al3Ti were synthesized on Ti-6Al-4V alloy by Yttrium Aluminium Garnet(YAG) laser. The friction and wear experiments were carried out on Ti-6Al-4V alloy and alloyed coatings at different loads (3N, 6N, 9N), and different temperatures (25 °C, 350 °C, 700 °C). The impact of load and temperature on wear performance were analyzed by analyzing the friction traces. The results showed that the abrasion loss, wear width, and depth, wear volume, and wear ratio of the alloyed coatings were less than Ti-6Al-4V alloy, and the surface of furrow was shallow and the wear was less. However, under high temperature conditions, the alloy coating wears worse than Ti-6Al-4V alloy, and the high temperature wear resistance is not ideal.

Comparative high-temperature wear resistance of CHS88U-VI alloy and H30N50YU5T2 satellite

2014 ◽  
Vol 0 (4) ◽  
Author(s):  
Oleksandr M. Kostin ◽  
Anastasiia Yu. Butenko ◽  
Volodymyr O. Martynenko
Keyword(s):  
Wear Resistance ◽  
High Temperature ◽  
High Temperature Wear
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