摘要
以大气等离子喷涂工艺制备的Al_2O_3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MoS_2,制备出Al_2O_3/MoS_2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MoS_2,合成的MoS_2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MoS_2搭建组成的。摩擦试验结果表明,与纯Al_2O_3涂层相比,复合涂层中由于MoS_2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。
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.
出处
《中国表面工程》
EI
CAS
CSCD
北大核心
2017年第5期110-118,共9页
China Surface Engineering
基金
中国科学院西部之光青年创新促进会项目(2014378)~~
