Adhesion and friction performance of DLC/rubber: The influence of plasma pretreatment

被引：30
|
作者：
Bai, Changning [1 ,2 ]
Gong, Zhenbin [1 ]
An, Lulu [1 ,2 ]
Qiang, Li [1 ,2 ]
Zhang, Junyan [1 ,2 ]
Yushkov, Georgy [3 ]
Nikolaev, Alexey [3 ]
Shandrikov, Maxim [3 ]
Zhang, Bin [1 ,2 ]
机构：
[1] Chinese Acad Sci, Lanzhou Inst Chem Phys, Key Lab Sci & Technol Wear & Protect Mat, Lanzhou 730000, Peoples R China
[2] Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China
[3] Russian Acad Sci, High Current Elect Inst, Tomsk 634055, Russia
来源：
FRICTION | 2021年 / 9卷 / 03期
基金：
中国国家自然科学基金;
关键词：
diamond-like carbon (DLC) films; rubber; plasma pretreatment; adhesion; friction; NITRILE BUTADIENE RUBBER; DLC FILMS; TRIBOLOGICAL PROPERTIES; CARBON COATINGS; SURFACE MODIFICATION; AR PLASMA; WEAR; DEPOSITION; SUPERLUBRICITY; PRESSURE;
D O I：
10.1007/s40544-020-0436-6
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
Diamond-like carbon (DLC) films are deposited on rubber surfaces to protect the rubber components, and surface pretreatment of the rubber substrates prior to the film deposition can improve the adhesion between the DLC films and the rubber. Thus, the principal purpose of this work concentrates on determining the effects of argon (Ar), oxygen (O-2), nitrogen (N-2), and hydrogen (H-2) plasma pretreatments on the adhesion and friction performance of the DLC films deposited on rubber (DLC/rubber). The results indicated that the Ar plasma pretreatment promoted the formation of a compact layer on the rubber surface. By contrast, massive fillers were exposed on the rubber surface after oxygen or nitrogen plasma pretreatments. Moreover, the typical micrometer-scale patches divided by random cracks were observed on the surface of DLC/rubber, except for the sample pretreated with oxygen plasma. The adhesion of DLC/rubber was found to strengthen with the removal of weak boundary layers and the generation of free radicals on the rubber surface after plasma pretreatment. The tribo-tests revealed that DLC/rubber with O-2, N-2, and H-2 plasma pretreatments cannot achieve optimal friction performance. Significantly, DLC/rubber with Ar plasma pretreatment exhibited a low and stable friction coefficient of 0.19 and superior wear resistance, which was correlated to the high adhesion, good load-bearing of the rubber surface, and the approximate sine function of the surface profile of the DLC film.
引用
收藏
页码：627 / 641
页数：15
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