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Superior mechanical and tribological properties governed by optimized modulation ratio in WC/a-C nano-multilayers.
- Source :
-
Ceramics International . Jun2021, Vol. 47 Issue 12, p16861-16869. 9p. - Publication Year :
- 2021
-
Abstract
- WC/a-C nano-multilayers with different modulation ratio (WC:a-C) ranging from 1:10 to 1.5:1 were deposited by fixing a-C individual layer thickness and tailoring WC individual layer thickness. The effect of modulation ratio on mechanical and tribological performance of WC/a-C nano-multilayers were investigated. Superior mechanical and tribological properties were simultaneously achieved at modulation ratio of 1:1.2. In addition to the improvement of mechanical properties, the improved tribological properties should also be attributed to the friction-induced formation of a WO 3 -rich transfer film under an appropriate WC individual layer thickness, which combing the graphitized worn film surface constructed an intrinsically weak-interacting sliding interface (WO 3 /C interface). Also, graphitized carbon is an essential coadjutant for the formation of WO 3 -rich transfer film. [ABSTRACT FROM AUTHOR]
- Subjects :
- *CARBON
Subjects
Details
- Language :
- English
- ISSN :
- 02728842
- Volume :
- 47
- Issue :
- 12
- Database :
- Academic Search Index
- Journal :
- Ceramics International
- Publication Type :
- Academic Journal
- Accession number :
- 150185505
- Full Text :
- https://doi.org/10.1016/j.ceramint.2021.02.261