期刊
INTERMETALLICS
卷 61, 期 -, 页码 1-8出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.intermet.2015.02.008
关键词
Metallic glasses; Tribological properties; Surface properties
资金
- National Basic Research Program of China [2011CB707603]
- National Natural Science Foundation of China [50875152, 51323006]
The tribological properties of zirconium-based bulk metallic glass (BMG) sliding against polymers, steels, and ceramics at different loads and speeds were investigated. Acoustic emission (AE) technology was used to analyze wear states. The frictional coefficients of the BMG slid against the steel and ceramic balls were high but decreased with increased applied normal load and sliding speed. As the steel balls were more ductile than the ceramic ones, the steel BMG sliding pairs generated weaker AE signals and exhibited larger wear rates. The BMG tested against the polymer balls had much lower and more stable frictional coefficients than the ones against the steel or ceramic balls because of transferred polymer layers on the BMG surfaces. The BMG against the polymer balls also exhibited the highest AE signals among the three types of counter materials used, indicating that abrasive wear dominated in the polymer-BMG sliding pairs. These results demonstrated the potential application of the BMG as a new tribomaterial that could be an alternative to the traditional crystalline metals for various counter materials. (C) 2015 Elsevier Ltd. All rights reserved.
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