等离子喷涂NiAl-MoO_(3)复合涂层的高温摩擦学与抗热震性能  

Tribological Properties and Thermal Shock Resistance of Plasma Sprayed NiAl-MoO_(3) Composite Coatings at High Temperature

作　　者：姚仟仟 陈体军[1] 贾均红[2,3] 杨杰 YAO Qianqian;CHEN Tijun;JIA Junhong;YANG Jie(State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metal Sponsored by Mministry and Province,Lanzhou University of Technology,Lanzhou 730050,China;State Key Laboratory of Solid Lubrication,Lanzhou Institute of Chemical Physics,Chinese Academy of Sciences,Lanzhou 730000,China;College of Mechanical and Electrical Engineering,Shaanxi University of Science&Technology,Xi'an 710021,China)

机构地区：[1]兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室,甘肃兰州730050 [2]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,甘肃兰州730000 [3]陕西科技大学机电工程学院,陕西西安710021

出　　处：《热加工工艺》2022年第2期91-96,共6页Hot Working Technology

基　　金：国家自然科学基金项目(51575505,51675508,51761028);陕西省重点研发计划项目(2019GY-173)。

摘　　要：采用大气等离子喷涂技术(APS)在S31008基体表面分别制备了NiAl涂层和NiAl-MoO_(3)复合涂层。结果表明:等离子喷涂制备的复合涂层具有致密的微观组织。MoO_(3)的添加使得复合涂层的结合强度和显微硬度均低于NiAl涂层,即分别从66.4MPa和248.6HV0.3降低至35.9MPa和232.8HV0.3。800℃时摩擦系数和磨损率分别低至0.16和6.55×10^(-5)mm^(3)/(N·m)。涂层在50次加热-水冷循环中,未出现大面积的脱落。NiAl coating and NiAl-MoO_(3) composite coating were prepared on the surface of S31008 matrix by atmospheric plasma spraying(APS)technology.The results show that the prepared composite coatings have a compact structure.The bonding strength and microhardness of the composite coating with the addition of solid lubricant are lower than that of NiAl coating,which reduces from 66.4 MPa and 248.6 HV0.3 to 35.9 MPa and 232.8 HV0.3,respectively.At 800℃,the friction coefficient and wear rate decrease to 0.16 and 6.55×10^(-5)mm^(3)/(N·m),respectively.After 50 cycles of heating-water cooling,the larger area of peeling does not occur in the composite coating.

关 键 词：大气等离子喷涂 NiAl-MoO_(3)复合涂层 摩擦化学反应 热震 

分 类 号：TG178[金属学及工艺—金属表面处理]