等离子喷涂铜铝涂层工艺研究  

Study on the Process of Plasma Spraying CuAl Coating

作　　者：李俊辰 罗奎林 刘瑞 陈明旭 孙若涵 LI Junchen;LUO Kuiling;LIU Rui;CHEN Mingxu;SUN Ruohan(Chengdu Hangli Industry Co.,Ltd.,Chengdu 611936,China)

机构地区：[1]成都航利实业有限公司,成都611936

出　　处：《机械工程师》2024年第1期42-45,共4页Mechanical Engineer

摘　　要：采用正交实验设计方法研究了等离子喷涂铜铝涂层过程中涂层硬度与等离子喷涂参数之间的响应关系,利用建立的响应公式,通过排列组合,优选出最佳工艺参数,并进行了实验验证。在实验参数区间内:涂层硬度HR15T与氩气流量、氢气流量及电流成正比,与喷涂距离成反比;在最优工艺参数范围下:获得的涂层硬度值分布在HR85~87之间,涂层结合强度≥32 MPa;涂层孔隙率≤3%,涂层最大孔洞尺寸约为8μm,涂层未熔粒子百分数约为3%,最大未熔粒子尺寸约为10μm;涂层试样弯曲170°后,涂层未出现脱落起皮现象。The relationship between hardness and plasma spraying parameters in the process of plasma spraying CuAl coating is studied by orthogonal experiment design method.The optimal process parameters are selected through established response formula and permutation.In the range of experiment parameter,the coating HR15T hardness is directly proportional to argon flow,hydrogen flow and current,and inversely proportional to spraying distance.Under the optimum process parameters,the obtained HR15T hardness of the coating is between 85~87,the bonding strength of the coating is above 32 MPa,the porosity of the coating is 3%,the maximum size is 8μm;the unmelted particles is 3%,the maximum sizes is 8μm;the coating shows no spalling,frilling after bending 170°.

关 键 词：等离子喷涂 Cu Al涂层 涂层硬度 结合强度 

分 类 号：TG174.4[金属学及工艺—金属表面处理]