Design, preparation, microstructure and tribological properties of Cr7C3 and CrxSy reinforced composite coating

被引：10
作者：
Cai, Shi-Ping [1 ]
Liu, Yuan-Fu [1 ]
Song, Zhi-Kun [1 ]
Lu, Fu-Gang [1 ]
Wu, Zhuo [1 ]
Xie, Ming-Zhao [1 ]
机构：
[1] Beijing Jiaotong Univ, Mat Sci & Engn Res Ctr, Sch Mech Elect & Control Engn, Beijing 100044, Peoples R China
来源：
WEAR | 2023年 / 526-527卷
关键词：
Metal-matrix composite coating; Plasma transferred arc; Sliding wear; Solid lubrication; WEAR PROPERTIES; PLASMA; BEHAVIOR; DEPOSITION; RESISTANCE; MECHANISM; FRICTION; MOS2;
D O I：
10.1016/j.wear.2023.204955
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
Conventional rod pumping has been the dominant petroleum recovery technology for nearly a century. As key components of the rod pumping system, tubing and sucker rod coupling are often prematurely scrapped due to "rod/tubing eccentric wear". To improve the service life of sucker rod coupling and tubing, a Cr7C3 and CrxSy reinforced gamma-(Ni, Fe) matrix composite coating was designed by JMatPro simulation and the coating was pre -pared by plasma transferred arc (PTA) cladding technique. The coating has a refined microstructure composed of Cr7C3 carbide, amorphous sulfide CrxSy and gamma solid solution. Primary Cr7C3 fine blocks with volume fraction up to 54% are uniformly dispersed in the coating giving the coating high hardness and good wear resistance. The in-situ synthesized CrxSy phases are dispersed in the gamma matrix in the form of fine spherical particles, which endows CrxSy phases strong interfacial bonding, and allows the CrxSy particles to be stripped layer-by-layer, thereby providing continuous lubrication. The coating exhibits excellent wear resistance and low and stable friction coefficient, and is expected to serve as a protective coating for sucker rod coupling to simultaneously improve the service life of sucker rod coupling and tubing.
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页数：13
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