金属基粉末冶金零件的微波烧结机理  

Mechanism of microwave sintering of powder metallic part

作　　者：易建宏[1] 罗述东[1] 唐新文[1] 李丽娅[1] 彭元东[1] 杜鹃[1] 

机构地区：[1]粉末冶金国家重点实验室,湖南长沙410083

出　　处：《粉末冶金材料科学与工程》2002年第3期180-184,共5页Materials Science and Engineering of Powder Metallurgy

基　　金：国家教育部高等学校骨干教师资助计划项目;湖南省自然科学基金(01JJY2139)

摘　　要：简要概述了微波烧结技术的特点和发展状况。从麦克斯韦方程组出发,分析了微波在块体金属中的传播行为,说明微波不能与块体金属耦合并烧结的原因。在此基础上,总结了金属粉末压坯的特点,阐述了微波烧结金属粉末压坯的可行性,分析了自由电子在电磁场中的运动行为,指出涡流损耗是微波促进烧结的机理之一。The properties and development of microwave sintering technology are oudined easily. From Maxwell's equation, the transmitting behavior in bulk metal and the reason why microwave does not effectively couple with bulk metal are analyzed. The characteristics of metal powder compact, which provide the viability of microwave sintering, are comprehensively summarized. Electron's movement behavior in electric-agnetic field is analyzed and eddy loss is stated to be one of the mechanisms of microwave sintering.

关 键 词：微波烧结 能量转化 金属粉末压坯 

分 类 号：TF124.5[冶金工程—粉末冶金] TM241[冶金工程—冶金物理化学]