Thermodynamic and Kinetic Characteristics of Glass Transition in an Amorphous Alloy Pd77.5Ni6.0Si16.5
DING Xing-zhao1, LIU Xiang-huai1, WU Qin-chong2, HE Yi-zhen3
1Shanghai Institute of Metallurgy, Chinese Academy of Sciences, Shanghai 200050
2Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031
3Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031
Thermodynamic and Kinetic Characteristics of Glass Transition in an Amorphous Alloy Pd77.5Ni6.0Si16.5
1Shanghai Institute of Metallurgy, Chinese Academy of Sciences, Shanghai 200050
2Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031
3Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031
Abstract： Variation of some thermodynamic functions of an amorphous alloy Pd77.5Ni6.0Si16.5 in glass transition temperature region during various scans was measured by a differential scanning calorimeter. The Gibbs free energy of glassy state was examined to be larger than that of the undercooled liquid state when the specimen was heated up to the glass transition temperature region, which supports the idea of what there are thermodynamic origins underlying glass transition process. On the other hand, it was found that glass transition behaved differently during heating and cooling scans. Moreover, with increase of heating rate, the glass transition process was delayed gradually to higher temperatures. It can be concluded that glass transition is a kinetically modified thermodynamic phase transformation.
DING Xing-zhao;LIU Xiang-huai;WU Qin-chong;HE Yi-zhen. Thermodynamic and Kinetic Characteristics of Glass Transition in an Amorphous Alloy Pd77.5Ni6.0Si16.5[J]. 中国物理快报, 1999, 16(5): 358-360.
DING Xing-zhao, LIU Xiang-huai, WU Qin-chong, HE Yi-zhen. Thermodynamic and Kinetic Characteristics of Glass Transition in an Amorphous Alloy Pd77.5Ni6.0Si16.5. Chin. Phys. Lett., 1999, 16(5): 358-360.
1999, Vol. 16 
