EFFECT OF SUBLAYER ON THE STRUCTURES AND TRIBOLOGICAL PROPERTIES OF GLC COATING ON Al-BASED ALLOY

被引：2
|
作者：
Shi Huiying [1 ]
Long Yanni [1 ]
Jiang Bailing [1 ]
Chen Dichun [1 ]
机构：
[1] Xian Univ Technol, Sch Mat Sci & Engn, Xian 710048, Peoples R China
来源：
ACTA METALLURGICA SINICA | 2012年 / 48卷 / 08期
关键词：
unbalanced magnetron sputtering; GLC film; microstructure; binding force; tribological property; GRAPHITE-LIKE CARBON; MICRO-ARC OXIDATION; WEAR-RESISTANCE; CERAMIC COATINGS; AL2O3; HARD; MICROSTRUCTURE; BEHAVIORS; FILMS; SI3N4;
D O I：
10.3724/SP.J.1037.2011.00748
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
Graphite-like carbon (GLC) film is a kind of antifriction coating. Cr/Cr-C/GLC and Al/Al-Cr-C/GLC composite coatings were prepared by using an unbalanced magnetron sputtering system on Al-based alloy, where Al and Cr layer are the sublayers, Cr-C and Al-Cr-C are the transition layers. As a comparation, the GLC coating without sublayer was also deposited on the substrate. The microstructure, binding force and tribological properties of as-deposited coatings were studied. The results show that the Cr sublayer shows a columnar growth structure, while the columnar grain is not found in the Cr-C transition layer which has a gradient composition distribution. There is a good combining interface between Al sublayer and Al-based alloy substrate. Al-Cr-C transition layer has a gradient composition distribution also. GLC layers based on different sublayers and transition layers have amorphous structures. Compared with GLC coating without sublayer, the binding forces of Cr/Cr-C/GLC and Al/Al-Cr-C/GLC composite coatings are obviously higher, and the Al/Al-Cr-C/GLC composite coating has the maximum critical load. Under different loading conditions, the friction coefficients of both Cr/Cr-C/GLC and Al/Al-Cr-C/GLC composite coatings are low and similar to each other.
引用
收藏
页码：983 / 988
页数：6
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