等离子喷涂低镍白铜涂层的组织性能研究  

Study on Microstructure and Property of B10 Coating Prepared by Plasma Spraying

作　　者：孙联雷 刘新宽[2] 刘平[1,2] 陈小红[2] 

机构地区：[1]上海理工大学机械工程学院,上海200093 [2]上海理工大学材料科学与工程学院,上海200093

出　　处：《热加工工艺》2015年第16期194-197,201,共5页Hot Working Technology

基　　金：国家自然科学基金资助(51201107);上海市教委科研创新项目(11YZ112);上海市科委基础重点项目(10JC1411800)

摘　　要：以低镍白铜粉末为原料,采用等离子喷涂工艺在碳钢Q235表面制备B10涂层,喷涂功率23.5~26.4 k W,喷涂距离130~180 mm。研究了喷涂功率和距离对涂层结合强度的影响。采用扫描电镜观察涂层组织形貌,用能谱仪进行化学成分分析,用X射线衍射进行物相分析。结果表明随喷涂功率和喷涂距离的增大,涂层与基体间的结合强度先增大后减小;在喷涂功率25 k W、喷涂距离150 mm时,涂层均匀致密,结合强度达到最大值28.3 MPa。其中,硬度达到218.1 HV0.1。B 10 coating was prepared on Q235 surface by plasma spraying using B 10 powers as raw materials with power 23.5-26.4 kW, and distance 130-180 mm. The effects of power and distance on joint strength of coating were studied. The microstructure and morphology of the coating were observed by SEM, the chemical composition was analyzed by EDS, and the phases were determined by XRD. The results show that with the spraying power and distance increasing, the joint strength increases at first and then decreases. At 25 kW, 150 ram, the coating is density and joint strength achieves the maximum 29.6 MPa. Also, microhardness reaches 218.1 HV0.1.

关 键 词：铜镍合金 等离子喷涂 组织 强度 

分 类 号：TG174.4[金属学及工艺—金属表面处理]