【摘 要】
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The study focus on understanding how to govern the fretting wear behaviors under dry lubricated contact to find out the keys to develop new coatings for rubber seal applications. Fretting wear behavio
【机 构】
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Engineering Research Center of Process Equipment and Its Remanufacture, Ministry of Education, Zheji
【出 处】
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第十一届全国表面工程大会暨第八届全国青年表面工程学术会议
论文部分内容阅读
The study focus on understanding how to govern the fretting wear behaviors under dry lubricated contact to find out the keys to develop new coatings for rubber seal applications. Fretting wear behaviors of crylonitrile-butadiene rubber (NBR) against steel substrate, diamond-like carbon and graphene coatings were comparatively investigated under dry conditions. Dyn mic analyses were performed in combination with examinations through scanning electron microscopy (SEM), 3D surface profilometry and X-ray photoelectron spectroscopy (XPS). Experimental results showed that, there was a significant difference occurred in the fretting running regimes for the graphene coating, compared to the DLC coating and steel substrate, the mixed fretting regime (MFR) was disappeared and the boundary between the partial slip regime (PSR) and the slip regime (SR) shift to the direction of smaller amplitude displacement in running condition fretting map (RCFM). Moreover, it has excellent anti-friction and wear-resistant performances under fretting condition. However, the DLC coating is not effective for improved fretting running behaviors, that is similar to the steel substrate. The damage of all the tribopairs in partial slip regime was very slight, the adhesion was the main damage mechanism for the DLC coating and the steel substrate in the MFR and SR, the sticky layers on the worn surface played an important role. For the graphene coating, theres no obvious damage could not observed on the tribopairs. Therefore, the graphene coating exhibited widely potential applications for alleviating fretting wear.
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