摘要
The Pd_(39)Ni_(10)Cu_(30)P_(21) bulk metallic glass is isothermally relaxed under various pressures.The degree of the structural relaxation is evaluated in terms of the enthalpy recovery behaviours involved in the irreversible glass transition processes by using a temperature-modulated differential scanning calarimetry technique.A roughly linear increase of the recovery enthalpy is observed within the experimental pressure range from 2.67 to 4.45 GPa,which reflects the release of the frozen-in enthalpy in the as-quenched glass with increasing relaxation pressure.The pressure dependence of the time scale of the enthalpy recovery processes is also exhibited.
作者
王利民
战再吉
孙力玲
李工
王文魁
WANG Li-Min;ZHAN Zai-Ji;SUN Li-Ling;LI Gong;WANG Wen-Kui(Center for Condensed Matter Physics,Chinese Academy of Sciences,Beijing 100080;College of Material Sciences and Chemical Engineering,Yanshan University,Qinhuangdao 066004)
基金
Supported by the National Natural Science Foundation of China under Grant Nos.59889102,10004014
by Chinese National Microgravity Laboratory(Pan-Yu-95-34).
