摘要
针对水中兵器关键部件在服役过程中发生的摩擦磨损问题,开展适用于水介质下的摩擦副材料及其摩擦学性能研究。利用激光熔覆技术制备了Co基合金涂层,研究了Co基合金涂层及Co基合金-PEF复合涂层与2种合金材料在水介质条件下配副时的摩擦学行为,并与38CrMoAl-锡青铜摩擦副进行了对比。结果表明:在水介质中,38CrMoAl-锡青铜摩擦副具有最高的摩擦系数和磨损率,分别为0.420和1.503×10^(-5)mm^(3)/(N·m),磨损机理主要为严重的黏着磨损和磨粒磨损;Co基合金涂层具有较高的显微硬度和抗塑性变形能力,与GH2130和GH4169对磨时摩擦系数分别为0.209和0.306,磨损率为2.321×10^(-6)mm^(3)/(N·m)和4.283×10^(-6)mm^(3)/(N·m),磨损机理主要为磨粒磨损;Co基合金-PEF复合涂层与GH2130构成的摩擦副摩擦系数为0.079,涂层磨损率为1.257×10^(-8)mm^(3)/(N·m),在4种摩擦副中表现出最优异的摩擦磨损性能。
In view of the friction and wear problems of key components of underwater weapons,research on friction pair materials suitable for water media and their tribological properties is carried out.Co-based alloy coatings are prepared by laser cladding technology.The tribological behavior of Co-based alloy coatings and Co-based alloy-PEF composite coatings sliding against two kinds of alloys in water is studied and compared with that of a 38CrMoAl-tin bronze friction pair.The results show that the 38CrMoAl-tin bronze friction pair has the highest friction coefficient and wear rate in water,with values of 0.420 and 1.503×10^(-5)mm^(3)/N·m,respectively.The wear mechanism mainly involves severe adhesive wear and abrasive wear.The Co-based alloy coating exhibits high microhardness and resistance to plastic deformation.When the Co-based alloy coating slides against GH2130 and GH4169,the friction coefficients are 0.209 and 0.306,while the wear rates are 2.321×10^(-6)mm^(3)/N·m and 4.283×10^(-6)mm^(3)/N·m,respectively.The wear mechanism mainly involves abrasive wear.The friction coefficient of the friction pair,Co-based alloy-PEF composite coating and GH2130,is 0.079,and the wear rate is 1.257×10^(-8)mm^(3)/N·m,which shows the best friction and wear performance among the four friction pairs.
作者
曹四龙
王凌倩
胥卫奇
周健松
CAO Si-long;WANG Ling-qian;XU Wei-qi;ZHOU Jian-song(Key Laboratory of Science and Technology on Wear and Protection of Materials,Lanzhou Institute of Chemical Physics,Chinese Academy of Sciences,Lanzhou 730000,China)
出处
《水下无人系统学报》
2021年第6期709-715,共7页
Journal of Unmanned Undersea Systems
关键词
水中兵器
Co基合金涂层
水介质
摩擦学性能
磨损机理
underwater weapon
Co-based alloy coating
water medium
tribological property
wear mechanism
