Tribological properties of Ti-doped diamond-like carbon coatings under dry friction and PAO oil lubrication

被引：33
|
作者：
Guo, Youzhi [1 ,2 ]
Guo, Peng [1 ]
Sun, Lili [1 ]
Li, Xiaowei [1 ,3 ]
Ke, Peiling [1 ]
Li, Qiang [2 ]
Wang, Aiying [1 ]
机构：
[1] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Zhejiang Key Lab Marine Mat & Protect Technol, Key Lab Marine Mat & Related Technol, Ningbo 315201, Zhejiang, Peoples R China
[2] Shanghai Univ, Sch Mat Sci & Engn, Shanghai, Peoples R China
[3] Korea Inst Sci & Technol, Computat Sci Ctr, Seoul, South Korea
来源：
SURFACE AND INTERFACE ANALYSIS | 2019年 / 51卷 / 03期
基金：
国家重点研发计划; 中国国家自然科学基金;
关键词：
diamond-like carbon; dry friction; lubrication mechanism; oil lubrication; Ti doped; transfer film; HYDROGENATED A-CH; AMORPHOUS-CARBON; DLC; FILMS; ADDITIVES; EVOLUTION; MICROSTRUCTURE; REDUCTION; METAL; WEAR;
D O I：
10.1002/sia.6588
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Titanium-doped diamond-like carbon (Ti-DLC) coatings with Ti concentration of 4 at.% (Ti-4at.%-DLC) and 27 at.% (Ti-27at.%-DLC) were prepared by a hybrid ion beam deposition system for comparison. The tribological behaviors of Ti-DLC coatings under dry friction and boundary lubrication conditions were systematically investigated. Results showed that, under dry friction, the Ti-4at.%-DLC coating displayed lower friction coefficient (0.07) and wear rate due to the continuous transfer film formed in the sliding interface, while Ti-27at.%-DLC coating was worn out at initial stage due to severe abrasive wear. And under boundary lubrication, both the Ti-4at.%-DLC and Ti-27at.%-DLC coatings showed excellent tribological properties attributing to the formation of oil film between sliding interface. In particular, Ti-27at.%-DLC performed the lowest wear rate of 1.12 x 10(-16) m(3) N-1 m(-1) in this friction case. In conclusion, compared with Ti-27at.%-DLC coating, Ti-4at.%-DLC coating exhibited better tribological performances both under dry friction and boundary lubrication. The present result provides guidance for the selection of DLC coatings according to the realistic environment of starved-oil and rich-oil conditions.
引用
收藏
页码：361 / 370
页数：10
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