摘要
采用非等温差热扫描量热分析方法,研究了压力对Zr55Cu30Al10Ni5大块非晶合金玻璃转变的影响。用Kissinger方程计算其玻璃转变的表观激活能。实验表明:玻璃转变与加热速度有关,具有动力学效应。不同压力下,大块非晶合金在远低于玻璃转变温度等温退火后,其玻璃转变温度和玻璃转变表观激活能均呈现出非单调的变化。
The effect of pressure annealing on the glass transition of bulk amorphous Zr55Cu30Al10Ni5 is studied by x-ray diffraction and differential scanning calorimeter (DSC). The apparent activation energy of the glass transition (E-g) was determined by the Kissinger method. The results show that the glass transition temperature and E-g of the specimens change nonlinearly with increase of the annealing pressure. The role of pressure on structural relaxation and the glass transition is discussed.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2004年第9期937-940,共4页
Rare Metal Materials and Engineering
基金
国家自然科学基金资助(50271050)
关键词
大块非晶合金
玻璃转变
结构驰豫
bulk amorphous
glass transition
structural relaxation
