Thermal stability and fragility of Pd-Si binary bulk metallic glasses

被引：20
作者：
Chen, Na [1 ]
Li, Yang [1 ]
Yao, Ke-Fu [1 ]
机构：
[1] Tsinghua Univ, Dept Mech Engn, Beijing 100084, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2010年 / 504卷
关键词：
Metallic glasses; Thermal analysis; Calorimetry; Binary alloy; Fragility; AMORPHOUS-ALLOYS; FORMING ABILITY; TRANSITION; LIQUIDS; CRYSTALLIZATION; TEMPERATURE;
D O I：
10.1016/j.jallcom.2010.02.079
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The thermal stability of the glassy structure and the supercooled liquids of Pd80+xSi20-x (x = 0, 1, and 2) binary bulk metallic glasses were investigated by differential scanning calorimetry. It is found that Pd-Si binary metallic glasses exhibit large activation energy for glass transition and crystallization, indicating the glassy structure and the supercooled liquids possess high thermal stability. Based on the kinetic nature of the glass transition and thus the resulted heating rate dependence, the fragility index of the Pd-Si binary glassy alloys has been obtained, and compared with other bulk metallic glasses. (C) 2010 Elsevier B.V. All rights reserved.
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页码：S211 / S214
页数：4
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