Evaluation of Slurry Erosive Wear Performance of Plasma-Sprayed Flyash-TiO2 Composite Coatings

2021 ◽  
Vol 7 (3) ◽  
Author(s):  
R. Keshavamurthy ◽  
B. E. Naveena ◽  
C. S. Ramesh ◽  
M. R. Haseebuddin
Keyword(s):  
Composite Coatings ◽  
Erosive Wear ◽  
Wear Performance ◽  
Plasma Sprayed

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.

scholarly journals Effect of Ni/MoS2 Addition on Microstructure and Properties of Supersonic Plasma-Sprayed Ni-Based Composite Coatings

2021 ◽  
Author(s):  
Xinsheng WANG ◽  
Wenbin HE ◽  
Junjian HOU ◽  
Kun LIU ◽  
Xihao YAN
Keyword(s):  
Friction And Wear ◽  
Composite Coatings ◽  
Tool Material ◽  
Friction Reduction ◽  
Fatigue Performance ◽  
Fatigue Properties ◽  
Wear Properties ◽  
Wear Performance ◽  
Supersonic Plasma ◽  
Plasma Sprayed

Abnormal tool wear is a significant problem encountered in machining. MoS2 has the function of friction reduction; thus, to mitigate friction, two Ni-based coatings, Ni60 and Ni60 + 15 wt.% Ni/MoS2, were obtained on tungsten steel using supersonic plasma technology. The microstructure, phase structure, microhardness, fatigue properties, and friction and wear properties of the two coatings were characterized. The results show that the two plasma-sprayed Ni-based coatings have desirable structures. The addition of Ni-coated MoS2 can effectively improve the hardness of the coatings, with values reaching as high as 735 HV. The speed of rotation of the friction ball was set as 200 r/min, and the cutting force was 201.6 N. The fatigue performance as well as the friction and wear performance of the coating are simulated using ANSYS. The fatigue performance is improved by 12.6 % after adding 15 wt.% Ni/MoS2, and the friction system of the coating becomes stable after 25 min of contact. The addition of 15 wt.% Ni/MoS2 can effectively improve the performance of the tool material.

Sliding Wear Performance of Plasma-Sprayed Al2O3-Cr2O3 Composite Coatings Against Graphite under Severe Conditions

2013 ◽  
Vol 22 (7) ◽  
pp. 1154-1162 ◽  
Author(s):  
Kai Yang ◽  
Xiaming Zhou ◽  
Chenguang Liu ◽  
Shunyan Tao ◽  
Chuanxian Ding
Keyword(s):  
Sliding Wear ◽  
Composite Coatings ◽  
Wear Performance ◽  
Plasma Sprayed

Study on Friction and Wear Performance of Plasma-Sprayed Metal Oxide Ceramic Coatings

2013 ◽  
Vol 312 ◽  
pp. 415-420
Author(s):  
Zi Yuan Shi ◽  
Guang Li ◽  
Ji Fei Cai
Keyword(s):  
Metal Oxide ◽  
Friction And Wear ◽  
Composite Coatings ◽  
Wear Test ◽  
Ceramic Coatings ◽  
Oxide Ceramic ◽  
Fatigue Wear ◽  
Wear Performance ◽  
Oxide Ceramic Coatings ◽  
Plasma Sprayed

Paper transferring gripper is a key part of printer. In this work, plasma spray technology was adopted for the coating of 5 different metal oxide ceramic layers on metallic substrate. The friction and wear performance of different plasma-sprayed metal oxide ceramic coating on the gripper surface were comparatively studied by friction and wear test. Results suggested that compared to 100% Al2O3 and 100% Cr2O3 ceramic coatings, Al2O3/Cr2O3 composite coatings had a higher friction coefficient and wear amount. Abrasive wear was the dominant wear mechanism for Al2O3/Cr2O3 composite coatings, while fatigue wear was dominant for 100% Al2O3 and 100%Cr2O3 ceramic coatings.

Erosive Wear Analysis of Plasma-Sprayed Cu Slag–Al Composite Coatings

2013 ◽  
Vol 56 (2) ◽  
pp. 196-202 ◽  
Author(s):  
Sisir Mantry ◽  
Debadhyan Behera ◽  
Srimant K. Mishra ◽  
Debidutta Debasish ◽  
Bharat B. Jha ◽  
...  
Keyword(s):  
Composite Coatings ◽  
Erosive Wear ◽  
Wear Analysis ◽  
Al Composite ◽  
Plasma Sprayed

scholarly journals Microstructural Charactistics of Plasma Sprayed NiCrBSi Coatings and Their Wear and Corrosion Behaviors

Coatings ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 170
Author(s):  
Songqiang Huang ◽  
Jingzhong Zhou ◽  
Kuoteng Sun ◽  
Hailiang Yang ◽  
Weichen Cai ◽  
...  
Keyword(s):  
Laser Scanning ◽  
Acid Corrosion ◽  
Composite Coatings ◽  
Atmospheric Plasma ◽  
Confocal Laser ◽  
Formation Mechanisms ◽  
Temperature Oxidation ◽  
Surface Protection ◽  
Plasma Sprayed ◽  
Nicrbsi Coatings

Nickel-based alloys are commonly used as protective coating materials for surface protection applications owing to their superior resistance to corrosion, wear and high-temperature oxidation. It is urgent to study the fundamental mechanism between the structure and corrosion properties of the Nickel-base composite coatings. This paper, therefore, focuses on clarifying the mechanisms of the microstructure influencing the acid corrosion and mechanical characteristics of the as-sprayed NiCrBSi coating and post-heat-treated coating. The formation mechanisms of the amorphous phase of flat particles during the plasma spray process were studied by using X-ray diffraction analysis, Raman spectroscopy and confocal laser scanning microscope at first. Then the evolutionary process of the corrosion structure and phase of the coating in the accelerated corrosion experiment is directly visualized by using scanning electron microscopy and energy spectrum analysis. The mechanical properties of the amorphous NiCrBSi coatings are lastly measured by microhardness and friction wear tests. The critical phenomena and results help to elucidate the relative influence of the surface features of atmospheric plasma sprayed coatings on acid corrosion responses and wear resistance, aiming at contributing to the development of a protective technique for electrical engineering.

Effect of SiC Content on Microstructure and Tribological Properties of Plasma Sprayed TiC/Ti5Si3/Ti3SiC2 Composite Coatings

2021 ◽  
Vol 30 (3) ◽  
pp. 2147-2158
Author(s):  
Chao Li ◽  
Fanyong Zhang ◽  
Liping Zhao ◽  
Jining He ◽  
Fuxing Yin
Keyword(s):  
Tribological Properties ◽  
Composite Coatings ◽  
Plasma Sprayed
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