稳恒磁场对超音速等离子喷涂NiCrBSi涂层组织和性能的影响  

Effect of Steady Magnetic Field on Microstructure and Properties of NiCrBSi Coating by Supersonic Plasma Spraying

作　　者：张磊[1,2] 黄艳斐 何东昱 郭伟玲 李国禄 董天顺[1] Zhang Lei;Huang Yanfei;He Dongyu;Guo Weiling;Li Guolu;Dong Tianshun(School of Materials Science and Engineering,Hebei University of Technology,Tianjin 300401,China;National Key Laboratory for Remanufacturing,Army Academy of Armored Forces,Beijing 100072,China)

机构地区：[1]河北工业大学材料科学与工程学院,天津300401 [2]陆军装甲兵学院装备再制造技术国防科技重点实验室,北京100072

出　　处：《稀有金属材料与工程》2023年第1期103-110,共8页Rare Metal Materials and Engineering

基　　金：National Natural Science Foundation of China(52130509);Key Basic Research Project of Foundation Strengthening Plan(2019-JCJQ-ZD-302)。

摘　　要：在稳恒磁场作用下,在45钢上喷涂了NiCrBSi涂层,并研究了NiCrBSi涂层的组织、力学性能和摩擦磨损性能。在稳恒磁场条件下,涂层的孔隙率显著降低,没有形成新物相,但γ-Ni、FeNi_(3)、Ni_(3)Si_(2)相中出现了择优取向。此外,涂层内的磁畴变得更为活跃,更容易随着外部磁场的细微变化而有序排列。涂层截面显微硬度显著提高,表面残余应力波动明显,涂层的磨损量降低了近13.6%。实验结果表明,稳恒磁场可以有效地改善涂层质量。此外,探讨了稳定磁场下喷涂提高Ni基涂层性能的机理。The NiCrBSi coating was sprayed onto the 45 steel under a steady magnetic field.The microstructure,mechanical properties,and friction and wear properties of coatings were studied.In the steady magnetic field,the coating porosity decreases dramatically.No new phase forms,but the preferred orientation occurs for theγ-Ni,FeNi_(3),and Ni_(3)Si_(2) phases.Moreover,the magnetic domains within the coating become more active and more ordered with subtle variations in external magnetic fields.The microhardness of the cross section of coating increases significantly,the residual stress on the surface fluctuates obviously,and the wear amount of the coating decreases by nearly 13.6%.Results show that a steady magnetic field can improve the coating quality effectively.Besides,the mechanism of property enhancement of Ni-based coating by spraying under steady magnetic field was discussed.

关 键 词：稳恒磁场 超音速等离子喷涂 NI基涂层 电磁搅拌 耐磨性能 

分 类 号：TG174.4[金属学及工艺—金属表面处理]