文献类型：期刊文章

作　　者：王瑶[1] 曾小勤[1,2] 邹建新[1] 李德江[1] 吴晓梅[1] 丁文江[1,2]

机构地区：[1]上海交通大学材料科学与工程学院上海镁材料及应用工程技术研究中心,上海200240 [2]上海交通大学材料科学与工程学院金属基复合材料国家重点实验室,上海200240

出　　处：《Transactions of Nonferrous Metals Society of China》

基　　金：Projects(10JC407700,11ZR1417600)supported by the Science and Technology Committee of Shanghai,China;Project(12zz017)supported by the Shanghai Education Committee,China

年　　份：2013

卷　　号：23

期　　号：10

起止页码：3112-3118

语　　种：中文

收录情况：AJ、CAS、CSA、CSA-PROQEUST、CSCD、CSCD2013_2014、EBSCO、EI、IC、INSPEC、JST、SCIE、SCOPUS、WOS、ZGKJHX、普通刊

摘　　要：Microstructure and phase evolutions of Mg-A1 powders ball milled in hydrogen atmosphere were investigated. Both in Mg-3%A1 （mass fraction） and Mg-9%AI systems, fl-MgH2 phase was observed upon a short milling time of 4 h and its maximum content of-80% was reached after 32 h. Neither as-milled powders of the in the two systems contain Mgl7All2. However, heating the milled powders of Mg-9%AI powders to 350 ~C resulted in the precipitation of Mg17A112. DTA/TG analyses of those powders milled for 8-40 h showed that either well-developed peak doublets or shoulders were observed, which plausibly corresponded to the separate hydrogen desorption from different particle fractions offl-MgH2.

关 键 词：Mg alloy  reaction milling  HYDRIDING nanocrystalline magnesium hydride  peak doublets  

分 类 号：TB383.3[材料类]