Effect of oxygen impurity on long-term thermal stability of Zr-based metallic glasses below glass transition temperature

来源期刊:中国有色金属学报(英文版)2006年第5期

论文作者:贺林 张帅 孙军 张长军

文章页码:992 - 997

Key words:Zr-based metallic glasses; thermal stability; continuous heating transformation diagram; oxygen impurity

Abstract: Long-term thermal stability of a series of Zr-based metallic glasses with different oxygen contents below their glass transition temperatures was compared based on their deductive continuous-heating-transformation diagrams created by using the corollary of Kissinger analysis method. It is found that the influence of oxygen on the long-term thermal stability of Zr-based metallic glasses exhibits at lower temperature is different from that on their short-term thermal stability presented at higher temperature. For each kind of the Zr-based metallic glasses, there is a critical heating rate, f c, which corresponds to a critical temperature, Tc. As heating rate is smaller than f c and onset devitrification temperature is below Tc, the glass with higher oxygen content will have longer incubation period for onset devitrification. The values of f c and Tc are related with the glasses’ reduced glass transition temperature Trg. The improving effect of oxygen impurity on the long-term thermal stability of Zr-based metallic glasses was discovered.

基金信息:the National Natural Science Foundation of China

有色金属在线官网  |   会议  |   在线投稿  |   购买纸书  |   科技图书馆

中南大学出版社 技术支持 版权声明   电话:0731-88830515 88830516   传真:0731-88710482   Email:administrator@cnnmol.com

互联网出版许可证:(署)网出证(京)字第342号   京ICP备17050991号-6      京公网安备11010802042557号