Cu-Si二元系中k相和η相的晶体结构分析  

Crystal Structure Analysis of k Phase and η Phase in Cu-Si System

作　　者：陈亮维[1] 刘泽光[1] 何纯孝[1] 罗锡明[1] 赵万春[1] 

机构地区：[1]昆明贵金属研究所分析室,650221

出　　处：《稀有金属》2000年第6期457-459,共3页Chinese Journal of Rare Metals

基　　金：云南省应用基础研究基金!项目 (96E10 4M)

摘　　要：对Cu Si二元系中的k相和 η相进行了X射线衍射分析。k相属于镁型六方晶系 ,晶格点阵参数为a =b=0 .2 5 6 1nm、c =0 .4184nm、α =β =90°、γ =12 0° ,k相不稳定 ,在室温下长期放置会部分地转变成γ Cu5Si;η相属于正交晶系 ,晶格点阵参数为a =0 .6 0 41nm、b=0 .6 35 6nm、c=0 .42 88nm ,Cu3Si合金分别在 46 7、5 5 8、5 70和 6 2 0℃时发生相变。The crystal structure of k phase and η phase in Cu Si alloy were analyzed by using X ray diffraction method. The results show that the crystal structure of k phase belongs to Mg type hexagonal system,with lattice paremeters: a =0.2561nm、 c =0.4184 nm、 α=β =90°、 γ =120°,the k phase is unstable at the room temperature and it can partially change into γ Cu 5Si. The crystal structure of η phase belongs to orthorhombic system with lattice parameters a =0.6041nm、 b =0.6356nm、 c =0.4288nm, the phase transformation of Cu 3Si alloy occurs in 467、558、570 and 620℃,respectively.

关 键 词：Cu-Si二元系 晶体结构 k相 Η相 

分 类 号：TG146.11[一般工业技术—材料科学与工程]