Anti-wear effect of graphene oxide in lubrication by fluorine-containing ionic liquid for steel
Anti-wear effect of graphene oxide in lubrication by fluorine-containing ionic liquid for steel
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DOI：
10.2474/trol.10.91
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发表时间：
2015-03
期刊：
影响因子：
1
通讯作者：
H. Kinoshita;M. Kondo;Y. Nishina;M. Fujii
中科院分区：
文献类型：
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作者：
H. Kinoshita;M. Kondo;Y. Nishina;M. Fujii
虽然含氟离子液体作为钢的液体润滑剂具有优异的润滑性，但在摩擦过程中会发生强烈的摩擦化学反应，导致严重的磨损。近年来，有报道称，分散在水和油中的氧化石墨烯（GO）具有良好的抗磨性能。在本研究中，为了研究氧化石墨烯在含氟离子液体对钢的润滑中的抗磨作用，研究了浓度为0.2、2和10质量%的氧化石墨烯与离子液体（[BMIM][BF4]）的混合物在钢表面的摩擦学性能。在纯离子液体润滑下，发生强烈的摩擦化学反应，导致腐蚀磨损。在氧化石墨烯质量%为0.2的氧化石墨烯-离子液体混合润滑下，磨损明显低于纯离子液体润滑。加入氧化石墨烯可以抑制强烈的摩擦化学反应。然而，在质量为10%的氧化石墨烯离子液体混合物中，磨损很大。氧化石墨烯离子液体混合物没有显著降低摩擦系数。
Although fluorine-containing ionic liquids have excellent lubricity as liquid lubricants for steels, strong tribochemical reactions leading to severe wear are occurred during friction. Recently, it is reported that graphene oxide (GO) dispersed in water and oils exhibit good anti-wear property. In this study, in order to investigate anti-wear effect of GO in lubrication of fluorine-containing ionic liquids for steel, tribological properties of mixtures of GO with concentrations of 0.2, 2, and 10 mass% and an ionic liquid ([BMIM][BF4]) were investigated on a steel surface. Under the pure ionic liquid lubrication, a strong tribochemical reaction occurred, resulting in corrosion wear. Under a GO–ionic liquid mixture lubrication with 0.2 mass% GO, wear was much lower than for the pure ionic liquid lubrication. Adding GO would inhibit the strong tribochemical reaction. However, wear was high with the 10 mass% GO–ionic liquid mixture. The GO–ionic liquid mixtures did not greatly decrease the friction coefficient.