Superior mechanical and tribological properties governed by optimized modulation ratio in WC/a-C nano-multilayers

被引：14
作者：
He, Dongqing [1 ,2 ]
Zhao, Yaoting [1 ,2 ]
Li, Wensheng [1 ,2 ]
Shang, Lunling [2 ,3 ]
Wang, Liping [4 ]
Zhang, Guangan [3 ]
机构：
[1] Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Peoples R China
[2] Lanzhou Univ Technol, Sch Mat Sci & Engn, Lanzhou 730050, Peoples R China
[3] Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China
[4] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Key Lab Marine Mat & Related Technol, Zhejiang Key Lab Marine Mat & Protect Technol, Ningbo 315201, Peoples R China
来源：
CERAMICS INTERNATIONAL | 2021年 / 47卷 / 12期
基金：
中国国家自然科学基金;
关键词：
WC/a-C nano-multilayers; Modulation ratio; Mechanical properties; Tribological properties; THIN-FILMS; WEAR MECHANISM; COATINGS; MICROSTRUCTURE; BEHAVIOR; CARBIDE; PERFORMANCE; DEPOSITION; FRICTION; DESIGN;
D O I：
10.1016/j.ceramint.2021.02.261
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
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 WO3-rich transfer film under an appropriate WC individual layer thickness, which combing the graphitized worn film surface constructed an intrinsically weak-interacting sliding interface (WO3/C interface). Also, graphitized carbon is an essential coadjutant for the formation of WO3-rich transfer film.
引用
收藏
页码：16861 / 16869
页数：9
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