Study on preparation and tribological properties of as-sprayed 8YSZ/Graphite coating

被引：14

作者：

Deng, Wen ^{[1
,2
]}

Zhao, Xiaoqin ^{[1
]}

An, Yulong ^{[1
,2
]}

Chen, Jianmin ^{[1
,2
]}

Zhou, Huidi ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Gansu, Peoples R China

[2] Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China

来源：

SURFACE ENGINEERING | 2020年 / 36卷 / 10期

基金：

中国科学院西部之光基金;

关键词：

Thermal spray; substrate preheating; microstructure; tribological properties; MECHANICAL-PROPERTIES; WEAR BEHAVIOR; FRICTION; GRAPHITE; MICROSTRUCTURE; STEEL;

D O I：

10.1080/02670844.2019.1669348

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The mechanical and tribological properties of the metal components can be improved by spraying ceramic coatings, but the ceramic coatings are not anti-friction. Thus we mixed nickel cladded graphite into 8YSZ (ZrO2 + 8wt-%Y2O3) powders, hoping to improve the tribological characteristics of the as-deposited 8YSZ coating. Meanwhile, the 8YSZ-Ni/Graphite coating is deposited at a substrate temperature of 500 degrees C to tune its microstructure and mechanical properties. The results demonstrate that the graphite uniformly distributed in the composite coatings and was hardly oxidized during spraying. The friction coefficient of 8YSZ-Ni/Graphite-RT coating is lower than that of 8YSZ coating due to the formation of graphite lubricating layer. The increase of defects leads to a decreasing tendency in the hardness and wear resistance. As the substrate temperature rises to 500 degrees C, the mechanical and anti-wear properties of 8YSZ-Ni/Graphite coating are significantly improved.

引用

页码：1097 / 1106

页数：10

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