Tribological Properties of NiCr-Cr3C2 - Ni / MoS2 Supersonic Plasma Sprayed Coating under Different Temperatures

2011 ◽  
Vol 399-401 ◽  
pp. 2061-2066
Author(s):  
Xu Qiang Li ◽  
Hai Jun Wang ◽  
Yong Ming Guo ◽  
Ming Liu ◽  
Ke Ke Zhao
Keyword(s):  
Mechanical Properties ◽  
Composite Coating ◽  
Tribological Properties ◽  
Stress Resistance ◽  
Friction Surface ◽  
Transfer Film ◽  
Supersonic Plasma ◽  
Different Temperatures ◽  
Sprayed Coating ◽  
Plasma Sprayed

NiCr-Cr3C2-Ni/MoS2composite coating was prepared by supersonic plasma spraying (S-PS) process. The tribological properties of the composite coating at 25°C, 300°C, 500°Cand 750°C were studied. The wear mechanism for the coating was discussed considering the microstructures, compositions and mechanical properties of the composite materials. Results show that the coating exhibits good tribological properties at 750°C, which was attributed to the compact and continuous Cr3O2transfer film formed on the friction surface. The wear rate of the coating increases with the temperature increase, which was associated with the decrease of the mechanical strength and stress-resistance of the coatings.

scholarly journals Evaluation of the mechanical properties of plasma-sprayed coating by nanoindentation technology

2012 ◽  
Vol 13 (3) ◽  
pp. 151-162 ◽  
Author(s):  
Wei-Chao Guo ◽  
Gast Rauchs ◽  
Luc Papeleux ◽  
Wei-Hong Zhang ◽  
François Gitzhofer ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Sprayed Coating ◽  
Plasma Sprayed

scholarly journals Influence of LBE Temperatures on the Microstructure and Properties of Crystalline and Amorphous Multiphase Ceramic Coatings

Coatings ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 543
Author(s):  
Yong Chen ◽  
Liangbin Hu ◽  
Changjun Qiu ◽  
Bin He ◽  
Lihua Zhou ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Composite Coating ◽  
Composite Coatings ◽  
Ceramic Coatings ◽  
Flame Spraying ◽  
Liquid Lead ◽  
In Situ Reaction ◽  
Chemical Phase ◽  
Different Temperatures

An Al2O3–TiO2 amorphous composite coating with a thickness of 100–120 μm was fabricated on China low activation martensitic steel (CLAM steel) by oxygen acetylene flame spraying technology and the laser in-situ reaction method. We investigated the microstructures and mechanical properties of the coating after liquid lead-bismuth eutectic (LBE) alloy corrosion under different temperatures for 300 h and found that the corrosion temperature of the LBE had no observable effect on the microstructure and chemical phase of the Al2O3–TiO2 amorphous composite coatings. However, the mechanical properties (micro-hardness and shear strength) of the Al2O3–TiO2 multiphase coating deteriorated slightly with the increase in the immersion temperature of the LBE. As a result of oxygen acetylene flame spraying and laser in-situ reaction technology, it was found that the Al2O3–TiO2 amorphous composite coating exhibits an excellent LBE corrosion resistance, which is a candidate structural material for the accelerator-driven subcritical system (ADS) to handle nuclear waste under extreme conditions.

Microstructural, mechanical and tribological properties of suspension plasma sprayed YSZ/h-BN composite coating

2018 ◽  
Vol 38 (13) ◽  
pp. 4512-4522 ◽  
Author(s):  
Yongli Zhao ◽  
Yan Wang ◽  
Zexin Yu ◽  
Marie-Pierre Planche ◽  
François Peyraut ◽  
...  
Keyword(s):  
Composite Coating ◽  
Tribological Properties ◽  
Mechanical And Tribological Properties ◽  
Plasma Sprayed

Microstructure, Mechanical and Tribological Properties of the Rapidly Solidified NiAl/Cr(Mo,Dy) Hypoeutectic Alloy

2016 ◽  
Vol 849 ◽  
pp. 590-596 ◽  
Author(s):  
Li Yuan Sheng
Keyword(s):  
Mechanical Properties ◽  
Wear Rate ◽  
Rapid Solidification ◽  
Tribological Properties ◽  
Hypoeutectic Alloy ◽  
Test Results ◽  
Mechanical And Tribological Properties ◽  
Different Temperatures ◽  
Sliding Test ◽  
Rapidly Solidified

The NiAl/Cr (Mo,Dy) hypoeutectic alloy was fabricated by rapid solidification. The microstructure and mechanical properties as well as tribological properties for the alloy at different temperatures were investigated. The results revealed that the rapidly solidified NiAl/Cr (Mo,Dy) hypoeutectic alloy was composed of primary NiAl, fine NiAl/Cr (Mo) eutectic lamella, Ni5Dy phase and Cr7Ni3 precipitate. The compression test showed that the rapid solidification improved the mechanical properties of the NiAl/Cr (Mo,Dy) hypoeutectic alloy obviously. The dry sliding test results showed that alloy had excellent tribological properties at about 1073 K, which obtained wear rate of 4.9 10-14m3/m·N and friction coefficient of 0.16 μ. The excellent tribological properties at high temperature may be attributed to the continuous and intact protecting lubricant film which was composed of amorphous, Cr2O3 and Al2O3 nanoparticles. Between 700 K to 900 K, the alloy demonstrated bad tribological properties, especially the high wear rate, which may be ascribed to the softening of NiAl and Cr (Mo) phases.

Sign in / Sign up

Export Citation Format

Share Document