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| Al2O3/MoS2复合涂层的制备及摩擦磨损性能 |
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邓雯1,2, 赵晓琴1, 李双建1,2, 安宇龙1, 周惠娣1, 陈建敏1
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1.中国科学院兰州化学物理研究所 固体润滑国家重点实验室, 兰州 730000;2.中国科学院 研究生院, 北京 100049
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| 摘要: |
| 以大气等离子喷涂工艺制备的Al2O3陶瓷涂层为模板，利用陶瓷涂层中存在的孔隙和微裂纹，采用水热反应在其内部原位合成具有润滑特性的MoS2，制备出Al2O3/MoS2的复合涂层。结果表明，通过水热反应在陶瓷涂层原有的微观缺陷中成功合成了MoS2，合成的MoS2固体粉末呈类球形状，并且这球状的粉末是由纳米片层状的MoS2搭建组成的。摩擦试验结果表明，与纯Al2O3涂层相比，复合涂层中由于MoS2润滑膜的形成，其摩擦因数和磨损率都显著降低，且载荷越大，复合涂层的摩擦性能越好。 |
| 关键词: 热喷涂 原位合成 Al2O3/MoS2 复合涂层 摩擦磨损 |
| DOI：10.11933/j.issn.1007-9289.20170324001 |
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| 基金项目:中国科学院西部之光青年创新促进会项目（2014378） |
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| Preparation and Tribological Properties of Al2O3/MoS2 Composite Coating |
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DENG Wen1,2, ZHAO Xiao-qin1, LI Shuang-jian1,2, AN Yu-long1, ZHOU Hui-di1, CHEN Jian-min1
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1.State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000;2.Graduate School, Chinese Academy of Sciences, Beijing 100049
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| Abstract: |
| Taking thermal sprayed Al2O3 coatings as templets, MoS2 was in-situ synthesized in the pores and micro-cracks of ceramic coatings using a hydrothermal method coupled with vacuum impregnation to prepare Al2O3/MoS2 composite coatings. The result show that MoS2 is successfully synthesized in the pores and micro-cracks of ceramic coatings through hydrothermal reaction, and the MoS2 powders appear flowerlike, and are constructed with many ultrathin nano-sheets. The results of tribological test show that the composite coatings have lower friction coefficient and wear rates due to the formation of MoS2 lubricating film on frictional surfaces compared with pure Al2O3 coatings. The tribological property of composite coatings is better with the increase of the load. |
| Key words: plasma spraying in-suit synthesis Al2O3/MoS2 composite coatings friction and wear |