High-temperature tribological properties of NiCoCrAlY-WSe2-BaF2CaF2 solid lubricant coatings prepared by plasma spraying

4th Global Conference on Materials Science and Engineering

Chen, X.H.^1 ; Yuan, X.J.^1 ; Xia, J.^1 ; Yu, Z.H.^1

Xi'an Research Institute of Hi-Tech, Shaanxi province

710025, China^1

关键词: High temperature;    High temperature tribological properties;    Low friction coefficients;    NiCoCrAlY;    Solid lubricant coatings;    Tribological properties;    XRD patterns;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/103/1/012052/pdf
DOI  :  10.1088/1757-899X/103/1/012052

来源: IOP

【 摘 要 】

In this paper, NiCoCrAlY-WSe2-BaF2·CaF2solid lubricant coatings were produced on a substrate by plasma spray and investigated at the high temperature, such as 500°C and 800°C. The structure of the coatings was characterized using XRD pattern and scanning electron microscopy. The TC1 (83wt% NiCoCrAlY) coating has a low friction coefficient at 500°C, where the WSe2is a good solid lubricant. The TC2 (65wt% NiCoCrAlY) coating has the low friction coefficient (0.279) at 800°C, due to the formation of BaCrO4 on the surfaces. As a result, the TC2 coating has the optimal tribological property in the wide temperature.