Optimizing the tribological performance of DLC-coated NBR rubber:The role of hydrogen in films
作者机构：Key Laboratory of Science and Technology on Wear and Protection of MaterialsLanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou 730000China Center of Materials Science and Optoelectronics EngineeringUniversity of Chinese Academy of SciencesBeijing 100049China
出 版 物：《Friction》 (摩擦（英文版）)
年 卷 期：2022年第10卷第6期
页 面：866-877页
核心收录：
学科分类：08[工学] 080203[工学-机械设计及理论] 0802[工学-机械工程]
基 金：国家自然科学基金 Youth Innovation Promotion Association CAS
主 题：rubber DLC films hydrogen contact angle tribological performance
摘 要：Diamond-like carbon(DLC)films directly deposited on rubber substrate is undoubtedly one optimal option to improve the tribological properties due to its ultralow friction,high-hardness as well as good chemical compatibility with *** the relationship between film structure and tribological performance is vital for protecting *** this study it was demonstrated that the etching effect induced by hydrogen incorporation played positive roles in reducing surface roughness of DLC *** addition,the water contact angle(CA)of DLC-coated nitrile butadiene rubber(NBR)was sensitive to the surface energy and sp?carbon clustering of DLC *** importantly,the optimum tribological performance was obtained at the 29 at%H-containing DLC film coated on NBR,which mainly depended on the following key factors:(1)the DLC film with appropriate roughness matched the counterpart surface;(2)the contact area and surface energy controlled interface adhesive force;(3)the microstructure of DLC films impacted load-bearing capacity;and(4)the generation of graphitic phase acted as a solid *** understanding may draw inspiration for the fabrication of DLC films on rubber to achieve low friction coefficient.
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