WC-10Co4Cr喷涂粉末制备工艺研究  

Researches on Preparation Techniques of WC-10Co4Cr Powder

作　　者：苏金鹏 徐雪源 杨学兵 辛俊祥 张林伟[3] SU Jinpeng;XU Xueyuan;YANG Xuebing;XIN Junxiang;ZHANG Linwei(Jiangxi Copper Corporation Copper Foil Technology Co.,Ltd.,330038,Nanchang,PRC;Jiangxi Hongdu Aviation Industry Group Company,Ltd.,330096,Nanchang,PRC;Institute of Applied Physics,Jiangxi Academy of Science,330096,Nanchang,PRC;College of Science,East China Jiaotong University,330013,Nanchang,PRC)

机构地区：[1]江西省江铜铜箔科技股份有限公司,南昌330038 [2]江西洪都航空工业集团有限责任公司,南昌330096 [3]江西省科学院应用物理研究所,南昌330096 [4]华东交通大学理学院,南昌330013

出　　处：《江西科学》2024年第6期1226-1230,共5页Jiangxi Science

基　　金：江西省科学院横向项目(J1-KJ-300-2022-KY0556-0128)。

摘　　要：WC-10Co4Cr粉末的形貌和致密度影响涂层的结构。采用喷雾干燥法及真空烧结法制备了WC-10Co4Cr粉末,研究了粘结剂含量、雾化盘转动频率、烧结温度和保温时间对WC-10Co4Cr粉末的形貌及致密度的影响。结果表明,当聚乙二醇的含量增大时,WC-10Co4Cr粉末颗粒的球形度先升高后降低,当聚乙二醇的质量分数为2.5%时,WC-10Co4Cr粉末颗粒的球形度最高。随着雾化盘转动频率的增大,WC-10Co4Cr粉末颗粒的直径减小,粉末颗粒的球形度先上升后下降。当雾化盘转动频率为26 Hz时,制得的WC-10Co4Cr粉末球形度最高。当烧结温度升高时,WC-10Co4Cr粉末颗粒的致密度上升,粉末颗粒的球形度下降,当烧结温度为1 275℃时,粉末颗粒的致密度和球形度高。随着保温时间的增加,WC-10Co4Cr粉末颗粒的致密度升高,粉末颗粒的球形度降低,当保温时间是3 h时,粉末颗粒具有高致密度及球形度。The morphology and density of WC-10Co4Cr powder have an impact on the structure of coatings.In this study,the spray drying method and vacuum sin tering technique were employed to synthesize WC-10Co4Cr powder.The influence of binder content,atomization plate rotation frequency,heating temperature,and sin tering time on the morphology and density of WC-10Co4Cr powder was investigated.The results show that sphericity of WC-10Co4Cr particles increases and then decreases as the content of polyethylene glycol increases.When the mass percentage of polyethylene glycol is 2.5%,the sphericity of WC-10Co4Cr particles is the highest.As the rotation frequency of the atomization plate increases,the diameter of WC-10Co4Cr particles decreases,and the sphericity of the particles first rises and then declines.The sphericity of WC-10Co4Cr particles is the highest when the rotation frequency of the atomization plate is 26 Hz.As the heating temperature rises, the density of WC-10Co4Cr particles increases while thesphericity of the particles decreases. The particles have high density and sphericity when theheating temperature is 1 275 ℃. As the sin tering time increases, the density of WC-10Co4Cr particles rises and the sphericity of the particles declines. The particles possess highdensity and sphericity when the sin tering time is 3 hours.

关 键 词：WC-10Co4Cr粉末 粘结剂 烧结温度 保温时间 

分 类 号：TG174.44[金属学及工艺—金属表面处理]