A comparative study on characteristic relaxation in Ce65Al10Cu20Co5 and Zr46 75Ti8 25Cu7 5Ni10Be27 5 bulk metallic glasses and supercooled liquids

被引：2
作者：
Wang, T. [1 ]
Li, J. B. [1 ]
Yang, Y. Q. [1 ]
Rao, G. H. [1 ]
机构：
[1] Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Inst Phys, Beijing 100190, Peoples R China
来源：
INTERMETALLICS | 2011年 / 19卷 / 01期
基金：
中国国家自然科学基金;
关键词：
Glasses metallic; Thermal properties; Calorimetry; MEDIUM-RANGE ORDER; DIELECTRIC-RELAXATION; CHARACTERISTIC LENGTH; TRANSITION; ALLOY; DEPENDENCE; SPECTROSCOPY; VISCOSITY; FRAGILITY;
D O I：
10.1016/j.intermet.2010.09.013
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 relaxation behaviors of Ce65Al10Cu20Co5 and Zr46 75Ti8.25Cu75Ni10Be275 (Vit4) bulk glass-forming supercooled liquids were investigated by frequency-dependent heat capacity measurements on a temperature-modulated differential scanning calorimetry (TMDSC) apparatus The relaxation behaviors of the investigated samples were well described by Kohlrausch-Williams-Watts (KWW) function The temperature dependences of characteristic relaxation time of the glass-forming liquids were fitted by Vogel-Fulcher-Tamman (VF) equation The derived fragility index in shows that Ce65Al10Cu20Co5 (m = 31) liquid is a stronger liquid than Vit4 (m = 42) The sizes of cooperatively rearranging region (CRR) for Ce65Al10Cu20Co5 and Vit4 liquids were estimated to be 1 6 and 1 4 nm respectively (C) 2010 Published by Elsevier Ltd
引用
收藏
页码：81 / 85
页数：5
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