Microtribological properties of Ti-6Al-4V alloy treated with self-assembled dopamine and graphene oxide coatings
Microtribological properties of Ti-6Al-4V alloy treated with self-assembled dopamine and graphene oxide coatings
复制标题
自组装多巴胺和氧化石墨烯涂层处理的Ti-6Al-4V合金的微观摩擦学性能
DOI：
10.1016/j.triboint.2019.04.030
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发表时间：
2019
影响因子：
6.2
通讯作者：
Ren Tianhui
中科院分区：
文献类型：
--
作者：
Wang Chenchen;Zhang Gangqiang;Li Zhipeng;Xu Yong;Zeng Xiangqiong;Zhao Shichang;Deng Jun;Hu Hongxing;Zhang Yadong;Ren Tianhui
单键合4v合金是一种很有前途的生物医学微纳机电系统材料。然而，其较差的微摩擦学性能影响了微机械的稳定性。在本研究中，通过在合金表面接枝氧化石墨烯（GO）来增强干润滑和SBF润滑下的防腐和微摩擦性能。我们进一步证明，在3-氨基丙基三乙氧基硅烷（APTES）过渡层的基础上，多巴胺（DA）粘接层（APTES-DA- go）的go包被样品比APTES- go具有更好的性能。此外，还讨论了氧化石墨烯涂层样品的防腐和摩擦学机理。对磨损表面的分析表明，氧化石墨烯薄片的相对滑移和表面形貌的磨损颗粒的夹持是改善摩擦学性能的主要因素。
Tisingle bond6Alsingle bond4V alloy is promising material as biomedical micro/nano–electromechanical systems. However, its poor microtribological properties have a negative impact on the micromachine stability. In this study, enhancements in anticorrosion and microtribological performances under dry and SBF lubrication are realized by grafting graphene oxide (GO) on the alloy surface. We further demonstrate that based on a 3-aminopropyltriethoxysilane (APTES) transition layer, the GO-coated sample with dopamine (DA) adhesive layer (APTES-DA-GO) exhibits better properties than those of the APTES-GO. Moreover, the anticorrosion and tribological mechanisms of the GO-coated samples were discussed. Analyses of worn surfaces show that the relative slip of GO sheets and entrapment of wear particles of the surface topography are the main factors contributing to the improved tribological behaviour.