Enhanced Lubricant Property of Flame-Sprayed Aluminum Coatings Additivated by Reduced Graphene Oxide Nanosheets
Enhanced Lubricant Property of Flame-Sprayed Aluminum Coatings Additivated by Reduced Graphene Oxide Nanosheets
复制标题
还原氧化石墨烯纳米片增强火焰喷涂铝涂层的润滑性能
DOI：
10.1007/s11666-018-0771-6
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发表时间：
2018
影响因子：
3.1
通讯作者：
Hua Li
中科院分区：
文献类型：
--
作者：
Yuting Xu;Botao Zhang;Songze Wu;Yi Liu;Xinkun Suo;Hua Li
采用火焰喷涂法制备了铝还原氧化石墨烯（rGO）复合涂层。研究了rGO-Al复合粉末和涂层的微观结构、摩擦学和电化学性能。复合粉末的微观结构表征表明，研磨后，rGO纳米片粘附在Al颗粒表面。还发现了Al颗粒的压扁和冷焊现象。还揭示了rGO的结构演化作为球磨时间的函数。涂层微观结构的研究结果表明，涂层沉积后，rGO纳米片均匀分布在涂层。球盘试验结果表明，添加0.3wt.复合涂层中的rGO带来了显著增强的润滑剂性能。我们相信，在这项研究中获得的结果将为生产新型rGO-金属减摩材料提供见解。
Flame spraying was applied to prepare aluminum (Al)-reduced graphene oxide (rGO) composite coatings for the first time using ball-milled composite powders. The microstructure, tribological and electrochemical properties of the rGO-Al composite powders and coatings were investigated. Microstructural characterization for the composite powders reveals that rGO nanosheets adhered to Al particle surfaces after milling. Flattening and cold welding phenomena of Al particles were also recognized. The structure evolution of rGO as a function of the time of ball milling was also revealed. The results of coating microstructure investigation show that the rGO nanosheets were uniformly distributed in the coatings after coating deposition. The result of ball-on-disk testing shows that the addition of 0.3 wt.% rGO in the composite coatings brought about significantly enhanced lubricant performance. We believe that the results gained in this research would give insight into producing novel rGO-metal anti-friction materials.