金属玻璃Zr70Cu30常压热稳性的研究  

On Thermal Stability for Metallic Glass Zr70Cu30 under Normal Atmosphere

作　　者：沈德久[1] 吴浩泉[1] 郭景海[1] 沈中毅[2] 

机构地区：[1]燕山大学 [2]中国科学院物理研究所

出　　处：《东北重型机械学院学报》1990年第1期26-31,共6页

摘　　要：本文利用由微机进行数据采集、显示和处理的差动扫描量热仪,并配以电阻测量,研究了金属玻璃 Zr70 Cu30的常压热稳性。测定了不同扫描速率下的晶化温度并求得晶化过程中几个阶段的晶化激活能;采取不同温度处理,测定了各温度下晶化量及相应的晶化激活能随时间的变化规律;在此基础上初步推测了该金属玻璃晶化过程的微观机制。The thermal stability of metallic glass Zr70Cu30 under normal atmosphere is examined by means of Differential Scanning Calorimetry(DSC) with microcomputer data acquisition-analysis system,moreoer,being coorperated with electric resistance measurement,Crystallizati-on temperatures at different scanning rates and crystallization activ-ation energies of several stages are obtained;the regular patterns ofcrystallization fraction varying with crystallization time at severaltemperatures and apparent crystallization activation energy varyingwith crystallization fraction are also obtained.Based on the resultsmentioned above,the crystallization micro-mechanism of the metallicglass is inferred tentatively.

关 键 词：金属玻璃 晶化 热稳性 

分 类 号：TQ171.71[化学工程—玻璃工业]