Significantly enhanced mechanical and tribological properties of Co-based alloy coatings by annealing treatment

被引：26
作者：
Tang, Ling [1 ,2 ]
He, Pengfei [2 ]
Kang, Jiajie [1 ]
Wang, Le [3 ]
Ding, Shuyu [2 ]
Chen, Shuying [4 ]
Zhu, Xianyong [2 ]
Xie, Fengkuan [2 ]
Zhou, Li [2 ]
Ma, Guozheng [1 ,2 ]
Wang, Haidou [1 ,2 ]
机构：
[1] China Univ Geosci, Sch Engn & Technol, Beijing 100083, Peoples R China
[2] Army Acad Armored Forces, Natl Key Lab Remfg, Beijing 100072, Peoples R China
[3] Nanchang Univ, Sch Mechatron Engn, Nanchang 330031, Jiangxi, Peoples R China
[4] China Astronaut Res & Training Ctr, Natl Key Lab Human Factors Engn, Beijing 100094, Peoples R China
来源：
TRIBOLOGY INTERNATIONAL | 2020年 / 146卷 / 146期
基金：
中国国家自然科学基金; 北京市自然科学基金;
关键词：
Plasma spraying; Heat treatment; Mechanical properties; Tribological behaviors; WEAR BEHAVIOR; HEAT-TREATMENT; OXIDATION BEHAVIOR; TEMPERATURE; RESISTANCE; MICROSTRUCTURE; ATMOSPHERE; CORROSION; FRICTION; HARDNESS;
D O I：
10.1016/j.triboint.2020.106265
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
In the present work, the wear resistance of plasma sprayed CoMoCrSi alloy coatings was dramatically enhanced more than 45 times by annealing treatment. The microstructure, element distribution, phase transformation, mechanical and tribological properties of the coatings annealed at 200 degrees C, 600 degrees C and 1000 degrees C were systematically investigated. Results show that the mechanical properties and wear resistance were significantly improved with the increment of annealing temperature. Especially the coating annealed at 1000 degrees C (S1000) exhibits lower friction coefficient and ultrahigh wear resistance without obvious wear scar. Worn surface analyses suggested that the extraordinary tribological properties were mainly attributed to the elimination of defects and the dense Cr2O3-riched lubricating film on the worn surface.
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页数：11
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