摘要
为了提升TC4表面摩擦学性能,利用通快4002同轴送粉光纤激光器,在TC4表面制备了TC4+Ni60+Ni-MoS2多元复合自润滑耐磨涂层,并分析研究了涂层组织和摩擦学性能。结果表明,熔覆层中无裂纹产生,但存在少量气孔缺陷,涂层生成相主要包括TiC、Ti2Ni、Ti2SC以及α-Ti;各生成相在涂层中的分布均匀致密,其中Ti2SC与Ti2Ni形成了Ti2SC-Ti2Ni镶嵌结构复合相,(001)Ti2Ni晶面与(011¯0)Ti2SC晶面间的错配度为3.18%,两相形成了共格界面关系;涂层的显微硬度较基材得到显著提高,Ti2SC-Ti2Ni镶嵌结构复合相有效改善了涂层的减摩、耐磨性能,涂层磨损机制为磨粒磨损。
To improve the tribological properties of TC4 surfaces,a TC4+Ni60+Ni-MoS2 multi-component composite self-lubricating wear-resistant coating was prepared on the TC4 surface by the TruDisk4002 coaxial powder feeding fiber laser.The microstructure and the tribological performance of this coating were also analyzed.The results show that there are no cracks but a few pores within the coating.The main precipitation phases of the coating are TiC,Ti2Ni,Ti2SC,andα-Ti,and they are uniformly and compactly distributed within the coating.Ti2SC and Ti2Ni form the Ti2SC-Ti2Ni mosaic structure composite phase,and the misfit between(011¯0)Ti2SC and(001)Ti2Ni is 3.18%.Ti2SC and Ti2Ni form the coherent interface relationship.The coating micro-hardness is obviously higher than that of the substrate.The Ti2SC-Ti2Ni mosaic composite phase can effectively improve the anti-friction and wear resistance of coatings,and the wear mechanism of coatings is abrasive wear.
作者
张天刚
张倩
庄怀风
薛鹏
姚波
徐誉桐
李宝轩
Tiangang Zhang;Qian Zhang;Huaifeng Zhuang;Peng Xue;Bo Yao;Yutong Xu;Baoxuan Li(Engineering Techniques Training Center,Civil Aviation University of China,Tianjin 300300,China;College of Aeronautical Engineering,Civil Aviation University of China,Tianjin 300300,China;Sino-European Institute of Aviation Engineering,Civil Aviation University of China,Tianjin 300300,China)
出处
《光学学报》
EI
CAS
CSCD
北大核心
2020年第11期127-137,共11页
Acta Optica Sinica
基金
国家自然科学基金(51371125)
中央高校基本科研业务费项目中国民航大学专项(3122019069)
天津市研究生科研创新项目(2019YJSS077)。
