Pd-Si binary bulk metallic glass  

作　　者：YAO KeFu CHEN Na 

机构地区：[1]Key Laboratory of Advanced Materials Processing Technology,Department of Mechanical Engineering,Tsinghua University,Beijing 100084,China

出　　处：《Science China(Physics,Mechanics & Astronomy)》2008年第4期414-420,共7页中国科学：物理学、力学、天文学（英文版）

基　　金：the National Basic Research Program of China (Grant No. 2007CB613905);the National Natural Science Foundation of China (Grant Nos. 50671050 and 50431030)

摘　　要：Pd80+xSi20-x (x=0,1,and 2) binary metallic glasses with the diameter ranging from 7 to 8 mm were prepared by a combination of fluxing and water quenching or air cooling. Thermal analysis results show that with increasing Si content,the glass transition temperature Tg,the initial crystallization temperature Tx and the onset crystalliza-tion temperature Tp of Pd-Si binary glassy alloys increase. Moreover,the super-cooled liquid region reaches 61 K. It indicates that Pd-Si binary alloys possess large glass forming ability,which can be greatly improved by fluxing treatment.Pd80+x Si20?x (x = 0, 1, and 2) binary metallic glasses with the diameter ranging from 7 to 8 mm were prepared by a combination of fluxing and water quenching or air cooling. Thermal analysis results show that with increasing Si content, the glass transition temperature T g, the initial crystallization temperature T x and the onset crystallization temperature T p of Pd-Si binary glassy alloys increase. Moreover, the supercooled liquid region reaches 61 K. It indicates that Pd-Si binary alloys possess large glass forming ability, which can be greatly improved by fluxing treatment.

关 键 词：fluxing BULK metallic GLASS BINARY alloys GLASS FORMING ability UNDERCOOLED liquid 

分 类 号：O482[理学—固体物理]