冲击成形——一种粉末冶金材料制备新工艺  

Shock compaction-new powder metallurgy process

作　　者：易健宏[1] 彭元东[1] 李丽娅[1] 叶途明[1] 夏庆林[1] 王红忠[1] 

机构地区：[1]中南大学粉末冶金国家重点实验室

出　　处：《粉末冶金技术》2006年第5期373-378,共6页Powder Metallurgy Technology

基　　金：湖南省自然科学基金项目(04JJY6029)

摘　　要：介绍了一种新的粉末冶金材料制备工艺———冲击成形。介绍了其成形工艺和成形机理:冲击波以非常快的速度和强烈的冲击能作用在粉末颗粒表面,各种能量作用于颗粒而使表面融化形成液相,压坯出模冷却固化成形。简述了其制备的材料及其研究现状:冲击成形制备出了金属粉末、陶瓷粉末、非晶粉末和金属-陶瓷复合粉末的材料,开发出了双冲击圆柱法、高温法、离子束装置等各种成形方法。由于它通常不需烧结,所以在经济上是一种可选择的材料制造工艺。A new process in powder metallurgy materials- shock compaction has been summarized. The shock compaction process and mechanism are introduced： a very rapid and intense shock energy acts on powder particle surface, various energies affect the particle surface and make liquid films occur, the part is ejected from the die and cooled. The manufactured materials and research condition in shock compaction are summarized： materials are made from metallic, ceramic, amorphous powder and metallic - ceramic powder mixture by shock compaction, double explosive layer cylindrical compaction method and ion - beam device are developed. It＇s an alternative manufacturing route as it usually has no need of sintering.

关 键 词：冲击波 成形 粉末冶金 材料 新工艺 

分 类 号：TF125[冶金工程—粉末冶金]