Chemical composition dependence of atomic oxygen erosion resistance in Cu-rich bulk metallic glasses  

作　　者：WANG Xin SHAO Yang YAO Ke-Fu 

机构地区：[1]Department of Mechanical Engineering,Tsinghua University,Beijing 100084,China

出　　处：《Chinese Science Bulletin》2012年第36期4801-4804,共4页

基　　金：supported by the National Basic Research Program of China(2007CB613905);the National Natural Science Foundation of China(50971073 and 51101090)

摘　　要：The effect of atomic oxygen(AO) on the surface oxidation of several typical Cu-based bulk metallic glasses(BMGs) was studied in the present work.The AO source using in this study is generated by discharge plasma type ground simulation equipment.The AO erosion/oxidation resistances of the amorphous alloy samples were assessed based on the analysis of mass loss,surface color and microstructure.It is found that these Cu-based BMGs possess good AO erosion/oxidation resistance and their resistance to AO erosion/oxidation strongly depends on the chemical composition.For the samples containing more Ag and/or Cu,the AO erosion/oxidation resistance is weaker.The present result is important for designing new metallic glasses using as space materials.The effect of atomic oxygen （AO） on the surface oxidation of several typical Cu-based bulk metallic glasses （BMGs） was studied in the present work. The AO source using in this study is generated by discharge plasma type ground simulation equipment. The AO erosion/oxidation resistances of the amorphous alloy samples were assessed based on the analysis of mass loss, surface color and microstructure. It is found that these Cu-based BMGs possess good AO erosion/oxidation resistance and their resistance to AO erosion/oxidation strongly depends on the chemical composition. For the samples containing more Ag and/or Cu, the AO erosion/oxidation resistance is weaker. The present result is important for designing new metallic glasses using as space materials.

关 键 词：块体金属玻璃 侵蚀性 原子氧 化学成分 耐氧化性 非晶合金 大块金属玻璃 地面模拟设备 

分 类 号：TG139.8[一般工业技术—材料科学与工程]