A new criterion for the stability of glasses

作者：Duan RG^*; Liang KM; Gu SR

来源：Journal of the European Ceramic Society, 1998, 18(8): 1131-1137.

DOI：10.1016/S0955-2219(98)00003-X

A new criterion for the stability of glasses, k(D)(T), k(D)(T)=nu.exp (-E/RT.D), where D=T-c(T-p-T-c)/T-l(T-l-T-g), was proposed, which included both the kinetic factor and the thermodynamic factor by means of bringing the correction factor, D, into the crystallization kinetic parameter, k(T), k(T)=nu exp (-E/RT) The lower the value of k(D)(T), the more stable glass. The new criterion, k(D)(T), was not influenced by the heating rate of differential thermal analysis (DTA). Especially when the values of frequency factor nu of glasses were near, the new criterion, k(D)(T), could accurately determine the stability of the glasses. The correctness of the new criterion, k(D)(T), had been verified through being used in the CaO-Al2O3-SiO2 system glasses and the Nd doped fluorozirconate glasses.

• 出版日期1998
• 单位清华大学