Influence of doping graphite on microstructure and tribological properties of plasma sprayed 3Al2O3-2SiO2 coating

被引：39
|
作者：
Zhao, Xiaoqin [1 ]
Li, Shuangjian [1 ,2 ]
Hou, Guoliang [1 ]
An, Yulong [1 ]
Zhou, Huidi [1 ]
Chen, Jianmin [1 ]
机构：
[1] Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
来源：
TRIBOLOGY INTERNATIONAL | 2016年 / 101卷
关键词：
Ceramic-matrix composite; Solid lubricants; Thermal spray coatings; Wear testing; WEAR BEHAVIOR; THERMAL SPRAY; FRICTION; COMPOSITE; CORROSION; STEEL;
D O I：
10.1016/j.triboint.2016.04.028
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
With the combination of self-lubricating ability and mechanical property, high-performance ceramic graphite composite coatings are potential candidates for machine components. Mullite/nickel cladded graphite (Ni-graphite) composite coatings with different content of graphite were fabricated by air plasma spraying technique. Results show that doping a suitable amount of Ni-graphite could greatly reduce the defects of mullite coating without significant decrease of their hardness. With the formation of re-graphitization lubricating film on friction surface, the friction coefficient of composite coating with 20 wt% Ni-graphite was observed to be 0.28, which was approximately 52% lower than that of pure mullite coating, and its wear rates was 4.15 times lower than that of pure mullite coating. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：168 / 177
页数：10
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