超细球形AgCu合金粉末的激光雾化制备工艺研究  

Research on Laser Atomization Process for Preparation of Ultrafine Spherical AgCu Alloy Powder

作　　者：赵兴科 孙昌政[2] 赵增磊 Zhao Xingke;Sun Changzheng;Zhao Zenglei(Shunde Graduate School,University of Science and Technology Beijing,Foshan 528399,China;School of Materials Science and Engineering,University of Science and Technology Beijing,Beijing 100083,China)

机构地区：[1]北京科技大学顺德研究生院,广东佛山528399 [2]北京科技大学材料科学与工程学院,北京100083

出　　处：《稀有金属材料与工程》2023年第10期3479-3484,共6页Rare Metal Materials and Engineering

基　　金：广东省重点领域研发计划激光与增材制造专项(2019B90907002);广东省佛山市科技创新专项(BK21BE003)。

摘　　要：AgCu合金粉末兼具Ag粉和Cu粉的优势,在电子制造、催化和医疗领域有广泛的应用前景。采用脉冲激光刻蚀AgCu共晶合金靶材的方法制备了粉末样品,采用扫描电镜、X射线衍射仪和差热分析等测试手段研究了粉末样品的粒径、形貌、成分和微观组织。结果表明,脉冲激光刻蚀制备的AgCu合金粉末的粒径集中分布范围为1~6μm。粉末颗粒呈球形、表面光滑。粉末颗粒的平均Ag含量接近靶材,在剖面上成分整体均匀。粉末的微观组织由富Ag相和富Cu相组成。粉末和靶材的开始熔化温度分别为773和779.5℃,两者熔化温度区间相近,但前者的温度区间相比后者向低温发生了偏移,推测是由于粉末颗粒中存在亚稳组织所导致的。研究结果为高性能超细球形AgCu合金粉末的制备提供了一种可行途径。AgCu alloy powder has both the advantages of Ag powder and Cu powder,and has broad application prospects in electronic manufacturing,catalysis and medical fields.Powder samples were prepared by pulse laser etching of AgCu eutectic alloy targets.The particle size,appearance,composition and microstructure of the powder samples were studied by scanning electron microscope,X-ray diffraction and differential thermal analysis.The results show that the particle size distribution of AgCu alloy powder is mainly in the range of 1~6μm.The powder particles are spherical and have a smooth surface.The average Ag content of the powder particles is close to that of the target,the composition is uniform on the most cross section.The microstructure of the powder is comprised of Ag-rich phase and Cu-rich phase.The onset melting temperatures of the powder and target are 773 and 779.5℃,respectively;the melting temperature ranges of the two are similar,but the temperature range of the former is shifted to a lower temperature than the latter,which is presumed to result from the presence of metastable phase in the powder particles.The research results provide a feasible way for the preparation of high-performance ultrafine spherical AgCu alloy powders.

关 键 词：AgCu合金 超细粉 球形粉 激光雾化 

分 类 号：TF123[冶金工程—粉末冶金] TG132.21[冶金工程—冶金物理化学]