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天然和人工时效Cu55Zr45金属玻璃结构弛豫的EXAFS研究

刘文 黄胜涛 唐承欢 徐国枢

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天然和人工时效Cu55Zr45金属玻璃结构弛豫的EXAFS研究

刘文, 黄胜涛, 唐承欢, 徐国枢

AN EXAFS STUDY FOR STRUCTURE RELAXATION OF Cu55Zr45 METALLIC GLASS DURING NATURAL AND ARTIFICIAL AGEING

LIU WEN, HUANG SHENG-TAO, TANG CHENG-HUANG, XU GUO-SHU
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  • 本文应用EXAFS结构分析法研究了Cu55Zr45金属玻璃经天然和人工时效后引起的结构变化。为了比较,也用EXAFS法测定了淬态样品的结构。与此同时还应用X射线小角散射技术和示差扫描量热仪等观测结构弛豫的手段测量了人工时效样品的相应现象。最后根据观测到的事实提出一个非晶相分离模型来解释这个样品在时效时产生的EXAFS及其傅里叶变换的变化,得到圆满结果。
    The structure change of Cu55Zr45 metallic glass during natural and artificial ageing was investigated with EXAFS method. For comparison, the structure of quenched specimen was also determined. The corresponding phenomena after the specimen was aged artificially was studied with the small angle X-ray scattering and DSC, which are suitable for observing structure relaxation. Finally, according to the facts observed, a model of phase separation was suggested to explain the EXAFS of the specimens and their change during ageing.
    • 基金项目: 中国科学院科学基金
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  • 文章访问数:  6453
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  • 被引次数: 0
出版历程
  • 收稿日期:  1986-12-30
  • 刊出日期:  1987-06-05

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