铝合金金属粉末注射成形技术研究进展  

Research progress on metal injection molding of aluminum alloys

作　　者：邹恒 孙亿 陈梦熊[1] 熊慧文[1] 张雷[1] 周科朝[1] ZOU Heng;SUN Yi;CHEN Mengxiong;XIONG Huiwen;ZHANG Lei;ZHOU Kechao(State Key Laboratory of Powder Metallurgy,Central South University,Changsha 410000,China)

机构地区：[1]中南大学粉末冶金国家重点实验室,长沙410000

出　　处：《粉末冶金技术》2025年第1期20-34,共15页Powder Metallurgy Technology

基　　金：国家重点研发计划资助项目(2021YFB3701900)。

摘　　要：铝及铝合金具有密度低、耐腐蚀、比强度高、导热性良好等特性,常被用于轻量化、功能化零部件,广泛应用于交通运输、电子产品、医疗以及化工等领域。铝合金金属粉末注射技术能实现精细复杂结构铝合金制品的低成本高效制造,具有力学性能优良、组织均匀、尺寸精度高、原料利用率高等优点,对推动铝合金注射成形零部件的产业化进程,加速其在电子信息产品、医疗器械、新能源汽车中的应用具有重要作用。本文介绍了铝合金金属粉末注射成形的发展现状,综述了铝合金注射成形用喂料制备要求,分析了粘结剂组分设计、脱脂方式、气氛烧结制度及合金元素对烧结致密化的作用机制,并展望了铝合金粉末注射成形亟待解决的问题与发展方向。Aluminum and aluminum alloys have the characteristics as low density,corrosion resistance,high specific strength,and good thermal conductivity,which are widely used in transportation,electronic products,medical,and chemical industries as the lightweight and functional components.Metal powder injection(MIM)can achieve the low-cost and efficient manufacturing of the fine and complex aluminum alloy products,exhibiting the satisfactory mechanical properties,uniform microstructure,and high dimensional accuracy.Development of Al-MIM technology plays an important role in promoting the industrialization of injection molded Al alloy parts and accelerating the application in electronic information products,medical devices,and new energy vehicles.The development status of metal powder injection molding for aluminum alloys was introduced in this paper,the effects of feeding requirements,binder composition design,degreasing method,atmosphere sintering system,and action mechanism on the sintering densification were reviewed,and the problems to be solved and the development direction were prospected.

关 键 词：铝合金 金属粉末注射成形 粘结剂 脱脂 烧结致密化 

分 类 号：TF123[冶金工程—粉末冶金]