Characterization of tribological behavior and wear mechanisms of novel oxynitride PVD coatings designed for applications at high temperatures

被引：76
作者：
Nohava, Jiri [1 ]
Dessarzin, Pascal [2 ]
Karvankova, Pavia [2 ]
Morstein, Marcus [2 ]
机构：
[1] Anton Paar, CH-2034 Peseux, Switzerland
[2] PLATIT AG, CH-2545 Selzach, Switzerland
来源：
TRIBOLOGY INTERNATIONAL | 2015年 / 81卷
关键词：
High-temperature wear; Oxynitride; Oxide; Rotating arc cathodes PVD coating; CATHODIC ARC EVAPORATION; THERMAL-STABILITY; HARD COATINGS; CORUNDUM; FILMS; DRY;
D O I：
10.1016/j.triboint.2014.08.016
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
This paper focuses on high-temperature tribotests of nanostructured Al-Cr-based oxynitride and oxide coatings. Pin-on-disk tribological tests were performed at temperatures in between room temperature and 800 degrees C, and the results compared to a conventional AlTiN coating. The AlCrN and AlCrON coatings showed good to acceptable wear resistance up to 600 degrees C while at 800 degrees C, both coating types failed. The new corundum-structured (Al,Cr)(2)O-3 oxide showed excellent wear performance up to 800 degrees C. Imaging and chemical analysis of the high-temperature wear tracks allowed for explaining the differences in the wear mechanisms. The ability of a coating to resist oxidation and to delay substrate oxidation, together with an excellent abrasional wear resistance, were identified as the major factors influencing wear rates under severe high-temperature conditions. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码：231 / 239
页数：9
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