表面氧化层对TiMn_(1.25)Cr_(0.25)储氢合金活化性能的影响  

Effect of Surface Oxide Layer on the Activation Behavior of TiMn_(1.25)Cr_(0.25) Hydrogen Storage Alloy

作　　者：余学斌[1] 吴铸[1] 黄太仲[1] 陈金舟[1] 倪君[1] 

机构地区：[1]中国科学院上海微系统与信息技术研究所,上海200050

出　　处：《稀有金属材料与工程》2004年第11期1191-1194,共4页Rare Metal Materials and Engineering

基　　金：国家"863"后续能源基金资助(2001AA515022)

摘　　要：通过 TiMn1.25Cr0.25 合金粉活化前在空气中暴露不同的时间,探讨了表面氧化层的形成对其活化性能的影响。活化测试结果表明:合金的活化难度随着合金在空气中暴露时间的延长而加大。俄歇电子能谱(AES)结果表明,在空气中暴露后的合金表面形成了一层大约 6 nm^10 nm 厚的表面氧化层,正是这层氧化层的形成加大了合金的活化难度。扫描电镜(SEM)结果表明合金的活化过程与合金的碎化有着密切的联系。The effect of surface oxide layer on the activation behavior of TiMn1.25Cr0.25 alloy is discussed through different exposure time to air prior to activation. The activation results imply that activation of TiMn1.25Cr0.25 alloy becomes more difficult with the time of exposure to air prolonging. The auger Electron Spectroscopy (AES) results present that an about 6 nmsimilar to10 nm thick oxide layer is formed on the surface of TiMn1.25Cr0.25 alloy, which is a important factor of effect the activation behavior of this alloy. The scanning electron microcopy (SEM) result show that the activation process of TiMn1.25Cr0.25 alloy is closely related with alloy grain fragmentation.

关 键 词：储氢材料 TiMn1.25Cr0.25合金 活化性能 表面氧化层 

分 类 号：TG139.7[一般工业技术—材料科学与工程]