匀晶系Sb95Bi5合金熔体的液态结构变化规律与机理研究

doi:10.3976/j.issn.1002-4026.2014.01.009

J4 ›› 2014, Vol. 27 ›› Issue (1): 51-55.doi: 10.3976/j.issn.1002-4026.2014.01.009

匀晶系Sb95Bi5合金熔体的液态结构变化规律与机理研究

詹成伟，周吉学，刘运腾，李卫红

山东省科学院新材料研究所, 山东济南 250014

收稿日期:2013-08-30 出版日期:2014-02-20 发布日期:2014-02-20
作者简介:詹成伟（1972-），男，博士，研究方向为液态金属成型技术。Email:chengwei_zhan@qq.com

Evolution and mechanism of the liquid structure of Sb95Bi5 melt

ZHAN Cheng-Wei, ZHOU Ji-Xue, LIU Yun-Teng, LI Wei-Hong

New Materials Institute, Shandong Academy of Sciences, Jinan 250014, China

Received:2013-08-30 Online:2014-02-20 Published:2014-02-20

摘要/Abstract

摘要：

利用液态金属X射线衍射仪和液态金属电阻率测量设备，分析了不同温度下Sb95Bi5合金的熔体结构、团簇相关半径以及Sb95Bi5合金熔体在降温过程中电阻率随温度的变化规律。实验结果表明，Sb95Bi5合金熔体的原子团簇相关半径在700~675 ℃之间发生了明显的变化，电阻率温度系数在698 ℃也发生了相应的变化，表明合金熔体在该温度范围内发生了液态结构的变化，这是由于该熔体中原子团簇在降温过程中发生Peierls形变所致。

关键词: 液态结构, 电阻率, 相关半径, Peierls形变

Abstract:

This paper employs liquid metal XRD and resistivity meter to analyze the structure and cluster correlation radius of Sb95Bi5 melt and the resistivity variation with temperature in its temperature dropping process. Experimental results indicate that the cluster correlation radius of Sb95Bi5 melt varies dramatically from 700 ℃ to 675 ℃. Its resistivity temperature coefficient also changes at 698 ℃. This shows that its liquid structure varies in the temperature scope. The reason is that its Peierls transition occurs in temperatue dropping process.

Key words: liquid structure, resistivity, correlation radius, Peierls transition

中图分类号:

TG131

詹成伟，周吉学，刘运腾，李卫红. 匀晶系Sb95Bi5合金熔体的液态结构变化规律与机理研究[J]. J4, 2014, 27(1): 51-55.

ZHAN Cheng-Wei, ZHOU Ji-Xue, LIU Yun-Teng, LI Wei-Hong. Evolution and mechanism of the liquid structure of Sb95Bi5 melt[J]. J4, 2014, 27(1): 51-55.

匀晶系Sb95Bi5合金熔体的液态结构变化规律与机理研究

Evolution and mechanism of the liquid structure of Sb95Bi5 melt

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