Chemisorption of thermal reduced graphene oxide nano-layer film on TNTZ surface and its tribological behavior
Chemisorption of thermal reduced graphene oxide nano-layer film on TNTZ surface and its tribological behavior
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TNTZ表面热还原氧化石墨烯纳米层膜的化学吸附及其摩擦学行为
DOI：
10.1016/j.surfcoat.2013.05.030
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发表时间：
2013-10
影响因子：
5.4
通讯作者：
Cheng, Xianhua
中科院分区：
文献类型：
--
作者：
Li, Pengfei;Cheng, Xianhua
以3-氨丙基三乙氧基硅烷(APTES)为中间偶联剂，在钛合金表面化学吸附氧化石墨烯(RGO)。APTES分子的硅醇部分以化学键的形式键合在底物表面，分子的另一端氨基与氧化石墨烯(GO)的含氧官能团共价连接。然后采用热还原工艺在Ti-29Nb-13Ta-4.6Zr(TNTZ)合金表面制备了APTES-RGO纳米层。用X射线衍射仪、X射线光电子能谱、原子力显微镜、扫描电子显微镜等测试手段对其进行了化学表征和表面形貌分析。结果表明，所制备的薄膜厚度为纳米级，与衬底之间存在化学吸附键合。此外，利用UMT试验机对薄膜的摩擦学性能进行了研究。摩擦学结果表明，所制备的APTES-RGO薄膜降低了钛合金的摩擦系数，改善了钛合金的干摩擦减摩性能。最后对薄膜的摩擦学机理进行了探讨。
In this study, reduced graphene oxide (RGO) sheets are chemisorbed on titanium alloy substrate by making use of 3-aminopropyltriethoxysilane (APTES) as an intermediate coupling agent. The silanol moiety of the APTES molecule is chemically bonded on the substrate surface and the other end of the molecule—amino group is covalently connected with oxygen functional groups of graphene oxide (GO). A thermal reduction process is then carried out to prepare APTES-RGO nano-layer on the surface of Ti–29Nb–13Ta–4.6Zr (TNTZ) alloy. Chemical characterization and surface morphology analyses are performed by XRD, XPS, AFM, SEM measurements. The results show that the prepared films are of nanoscale in thickness, with chemisorptive bonds to the substrate. Furthermore, tribology properties of the films are investigated by UMT tester. Tribological results indicate that the prepared APTES-RGO film lowers the coefficient of friction and improves anti-friction properties of titanium alloy under dry friction. Tribology mechanism of the film is discussed in the end.
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影响因子：
--
作者：
Choudhary, Shivani;Mungse, Harshal P.;Khatri, Om P.
通讯作者：
Khatri, Om P.
DOI：
10.1016/j.jmbbm.2011.02.005
发表时间：
2011-10
影响因子：
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作者：
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通讯作者：
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影响因子：
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作者：
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通讯作者：
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影响因子：
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作者：
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通讯作者：
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影响因子：
3.4
作者：
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通讯作者：
Wu, Dehai