|
材料研究学报 1997
GLASS TRANSITION TEMPERATURE OF Zr_(65)Al_(7.5)Ni_(10)Cu_(15)Co_(2.5) ALLOYS
|
Abstract:
The glass transition temperatures related to thermodynamic functions, kinetic parameters, and heating rate are studied based on the specific heat measurements of Zr657.5 Al7.5 Ni10Cu15Co2.5alloy in nanoccrystals, crystals with normal grain size, liquid and glass. The results show that the activation energy .of the glass transition is very small. The glass transition temperatures are the thermodynamic equilibrium temperature between the liquid and the glasses with different energy states induced by different heating rates. The change of glass transition temperatures due to different heating rates is not a kinetic phenomenon.