Friction and wear behavior of hydrogenated diamond-like carbon coating against titanium alloys under large normal load and variable velocity

被引:9
|
作者
Liu, Jun [1 ]
Zhang, Zhinan [1 ,2 ]
Ji, Zhe [1 ]
Xie, Youbai [1 ,2 ]
机构
[1] Shanghai Jiao Tong Univ, Sch Mech Engn, Shanghai, Peoples R China
[2] Shanghai Jiao Tong Univ, State Key Lab Mech Syst & Vibrat, Shanghai, Peoples R China
基金
中国国家自然科学基金;
关键词
Titanium alloy; Friction; Wear; H-DLC; Large load; Variable velocity; DOPED DLC COATINGS; TRIBOLOGICAL PROPERTIES; LUBRICATION CONDITIONS; DLC/DLC CONTACTS; PERFORMANCE; OIL; MECHANISMS; STABILITY; ALUMINUM; SILICON;
D O I
10.1108/ILT-08-2016-0188
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
Purpose - This paper aims to investigate the effects of reciprocating frequency, large normal load on friction and wear behavior of hydrogenated diamond-like carbon (H-DLC) coating against Ti-6Al-4V ball under dry and lubricated conditions. Design/methodology/approach - The friction and wear mechanisms are analyzed by scanning electron microscope, energy dispersive spectroscopy and Raman spectroscopy. Findings - The results show that as reciprocating frequency increases under lubricated conditions, the friction coefficient decreases first and then increases. When the reciprocating frequency is 2.54 Hz, the value of friction coefficient reaches the minimum. The friction reduction is because of the transformation from sp(3) to sp(2), the formation of transfer layer on Ti-6Al-4V ball and the reduction in viscous friction, whereas the increase of friction coefficient is related to wear. In dry conditions, the friction coefficient is between 0.06 and 0.1. And, the service life of H-DLC coating decreases with the increase in reciprocating frequency and normal load. Research limitations/implications - It is confirmed that adding the lubricant could prolong the service life of H-DLC coating and reduce friction and wear efficiently. And, the wear mechanisms under dry and lubricated conditions encompass abrasive wear and adhesive wear. Originality/value - The results are helpful for application of diamond-like carbon coating.
引用
收藏
页码:199 / 207
页数:9
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