超音速等离子喷涂非晶涂层微观结构与摩擦学性能  

Microstructure and tribological properties of amorphous coatings by supersonic atmospheric plasma spraying

作　　者：何涛 王学朋 刘海波 柳琪 贾华 刘娜 丁飞 He Tao;Wang Xuepeng;Liu Haibo;Liu Qi;Jia Hua;Liu Na;Ding Fei(Wuzhong Instrument Co.,Ltd.,Wuzhong Ningxia 751100,China;State Key Laboratory for Mechanical Behavior of Materials,Xi'an Jiaotong University,Xi'an Shaanxi 710049,China)

机构地区：[1]吴忠仪表有限责任公司,宁夏吴忠751100 [2]西安交通大学金属材料强度国家重点实验室,陕西西安710049

出　　处：《金属热处理》2022年第12期210-216,共7页Heat Treatment of Metals

基　　金：高端控制阀产业技术协同创新中心项目(Grant No.WZYB-XTCX-001)。

摘　　要：采用新一代超音速高能等离子喷涂(SAPS)技术制备了Fe基和Mo基两种非晶涂层,对涂层的微观结构与摩擦学性能进行对比分析。结果表明,SAPS喷涂Fe基和Mo基非晶涂层内部孔洞少、结构致密性高。与Fe基涂层相比,具有更低孔隙率的Mo基涂层在摩擦过程中表现出更低的磨损率(1.1×10^(-4)μm·N^(-1)·s^(-1)),耐磨性更优。涂层的磨损机理均以磨粒磨损和疲劳磨损为主,并伴随着磨屑氧化。Fe-based and Mo-based amorphous coatings are fabricated by the new generation of supersonic atmospheric plasma spraying(SAPS),and microstructure and tribological properties of the coatings were comparatively analyzed.The results show that a small number of pores in the SAPS sprayed Fe-based and Mo-based amorphous coatings lead to high structural density.Compared with Fe-based coating,the Mo-based coating with lower porosity has a lower wear rate(1.1×10^(-4)μm·N^(-1)·s^(-1))during friction,resulting in a better wear resistance.The wear mechanism of the coatings is mainly abrasive wear and fatigue wear,accompanied by delamination and debris oxidation.

关 键 词：超音速等离子喷涂 非晶涂层 显微组织 摩擦学性能 磨粒磨损 

分 类 号：TG174.442[金属学及工艺—金属表面处理]