Characterization of Ni57Zr20Ti20Sn3 amorphous powders obtained by mechanical alloying

被引：5

作者：

Wu, Hsin-Ming

Hung, Shih-Sheng

Lee, Pee-Yew ^{[1
]}

机构：

[1] Natl Taiwan Ocean Univ, Inst Mat Engn, Chilung 202, Taiwan

[2] Tatung Univ, Dept Mat Engn, Taipei 104, Taiwan

[3] I Shou Univ, Dept Mat Sci & Engn, Kaohsiung 840, Taiwan

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2007年 / 434卷

关键词：

Ni-based alloys; amorphous phase; mechanical alloying; supercooled liquid region; glass transition;

D O I：

10.1016/j.jallcom.2006.08.220

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：

This study examined the amorphization behavior and thermal stability of mechanically alloyed Ni57Zr20Ti20Sn3 powders synthesized by high-energy ball milling. Complete amorphization is feasible after 5 h of milling. The thermal stability of the Ni57Zr20Ti20Sn3 amorphous powders was investigated by differential thenrial analysis. As the results demonstrated, the temperature interval of the supercooled liquid region defined by the difference between glass-transition temperature and crystallization temperature is 96 K for M57Zn20Ti20Sn3. The glass-transition and crystallization temperatures of mechanically alloyed samples are different from those reported in the literature for samples prepared by melt spinning techniques. The different thermal stability is believed to be due to the introduction of impurities into the ball-milled samples during mechanical alloying process. The glass transition behavior in the Ni(57)Zri(20)Ti(20)Sn(3) is found to be a kinetically modified thermodynamic phase transformation process. (C) 2006 Elsevier B.V. All rights reserved.

引用

页码：386 / 389

页数：4

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