Differences in dry sliding wear behavior between HVAF-sprayed amorphous steel and crystalline stainless steel coatings

被引：67
作者：
Guo, Hui [1 ,2 ]
Zhang, Suode [1 ]
Sun, Wenhai [1 ]
Wang, Jianqiang [1 ]
机构：
[1] Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
来源：
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY | 2019年 / 35卷 / 05期
基金：
中国国家自然科学基金;
关键词：
Amorphous steel coating; Nanoindentation; Shear stress; Flash temperature; Wear mechanism; BULK METALLIC GLASSES; FRACTURE-TOUGHNESS; CORROSION BEHAVIOR; AC-HVAF; FE-AL; RESISTANCE; VELOCITY; POROSITY; MICROSTRUCTURE; DEFORMATION;
D O I：
10.1016/j.jmst.2018.11.006
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Dry sliding wear behavior of amorphous steel coating (ASC) and crystalline stainless steel coating (SSC) manufactured by high-velocity-air-fuel-spraying was investigated. With increasing normal load, coefficient of friction (COF) of ASC decreases slightly from 0.78 to 0.69. COF of SSC presents a minor difference under various normal loads but increases with sliding time accompanied by relatively large fluctuation. Such a difference in friction behavior between such two coatings can be understood based upon the roles of shear stress and flash temperature. Wear rate of SSC is much higher than that of ASC, suggesting better wear resistance of ASC. The enhanced wear resistance is correlated with high hardness (H), reduced Young's modulus (E-r), and ratios of H/E-r - and H-3/E-r(2). Detailed analyses on worn surfaces and sub-surfaces indicate that the wear mechanisms for ASC include delamination, abrasive and oxidation wear, whereas those for SSC are delamination and oxidation. (C) 2019 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
引用
收藏
页码：865 / 874
页数：10
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