不同方法制备的温压粉末形貌及工艺性能  

Surface morphology and technical performances of warm compaction powder made by various methods

作　　者：张菊红[1] 肖志瑜[1] 温利平[1] 潘国如[1] 

机构地区：[1]华南理工大学机械工程学院,广州510640

出　　处：《粉末冶金材料科学与工程》2006年第3期155-158,共4页Materials Science and Engineering of Powder Metallurgy

基　　金：国家自然科学基金项目(50574041);广东省自然科学基金团队项目(003019);广东省科技计划项目(2004B10301018)

摘　　要：温压粉末质量是温压工艺成败的关键,应据成品件的用途和成本要求选择不同的制粉方法。针对高密度高性能温压零件要求,研究和分析不同制粉方法对Fe-2Cu-2Ni-1Mo-1C(质量分数,%)温压粉末形貌及流动性和松装密度的影响之后,发现:用不同方法制备的粉末在形貌上有很大差异,在室温与130℃均有良好的松装密度与流动性,且多次循环加热对其流动性和松装密度都没有不良影响,而部分扩散预合金粉末的综合特性最佳。Suitable powder is the key for the warm compaction technology. According to different applications and cost limits, producers should choose the best from mixed powder, binder-treated powder and partially pre-alloyed powder, etc. To be aimed at the requirement for high density and high performance warm compact parts, the authors investigated the effects of various powder preparation methods on surface morphology, flowability and apparent density of Fe-2Cu-2Ni-1Mo-1C warm compacted powder. The results show that warm compacted powders made by various methods have different surface morphology, but they all show good flowability and high apparent density at both room temperature and 130℃ and have stable flowability and apparent density under different heating cycle and heating times; the general characteristics of partially-diffused pre-alloyed warm compacted powder is the best.

关 键 词：粉末冶金 温压 粉末形貌 流动性 松装密度 

分 类 号：TB331[一般工业技术—材料科学与工程]