The effect of hydrogen on the tribological behavior of diamond like carbon (DLC) coatings sliding against Al2O3 in water environment

被引：29
作者：
Zhang, T. F. [1 ]
Xie, D. [2 ]
Huang, N. [1 ]
Leng, Yongxiang [1 ]
机构：
[1] Southwest Jiaotong Univ, Key Lab Adv Technol Mat, Minist Educ, Sch Mat Sci & Engn, Chengdu 610031, Peoples R China
[2] Southwest Jiaotong Univ, Sch Phys Sci & Technol, Chengdu 610031, Peoples R China
来源：
SURFACE & COATINGS TECHNOLOGY | 2017年 / 320卷
关键词：
Diamond like carbon; Aqueous lubrication; Friction; Wear; ON-METAL BEARINGS; ION LEVELS; FILMS; FRICTION; WEAR; STEEL; LUBRICATION; OIL;
D O I：
10.1016/j.surfcoat.2016.10.045
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The tribological behavior of hydrogenated and hydrogen free diamond like carbon (DLC) coatings sliding against Al2O3 in air and pure water was investigated by ball-on-disc reciprocation wear test, and the effect of hydrogen was discussed. The results showed that in air environment, the Al2O3 slide against DLC under solid lubrication condition, and the wear of DLC coatings was mainly affected by coating mechanical properties. The hydrogen lowered the coating hardness and brought more DLC wear in air environment. In water environment, the solid lubrication effect is weak, the hydrogen began to play an important role in DLC wear. The hydrogenated DLC coating with saturated -CH bonds showed better wear resistance even though its hardness is lower. The hydrogenated DLC coating with unsaturated -CH bonds was easy to graphitize and generate massive wear no matter in water or in air environment. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：619 / 623
页数：5
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