铜基金属粉末温压工艺致密化的研究  

STUDY ON DENSIFICATION OF Cu-BASED METAL POWDER BY WARM COMPACTION

作　　者：莫德锋[1] 何国求[1] 毛凡[1] 

机构地区：[1]同济大学材料科学与工程学院,上海200092

出　　处：《粉末冶金工业》2006年第5期20-23,共4页Powder Metallurgy Industry

基　　金：国家863计划高速磁悬浮交通技术重大专项(2005AA505010)

摘　　要：研究了铜基金属粉末的温压压制行为,并与冷压压制进行了比较。结果表明:相同压力下,温压压制的压坯密度明显高于冷压压制,在压制压力为500-600 MPa时,密度增加达0.24 g/cm3;温压温度有一个最佳值,必须高于润滑剂的玻璃化温度,低于润滑剂的熔点温度;石墨含量增加,压坯密度下降,当石墨含量小于1%时,温压压制的优势较为明显。A series of experiments were carried out on warm compaction and conventional compaction of Cu-based metal powder. Results show that the effective pressure during warm compaction is larger than that of conventional compaction and best result can be obtained at a pressure of 500- 600 MPa.The lubricant is only effective at an optimum temperature,which is higher than the vitrification temperature of the lubricant and lower than the melting point of the lu bricant. With the increase of graphite content, the green density tends to drop.And when the graphite content is smaller than 1% ,the superiority of warm compaction is more obvious.

关 键 词：铜基金属粉末 温压 致密化 润滑剂 

分 类 号：TF124.3[冶金工程—粉末冶金]