Glass transition in an isostatically compressed calcium metaphosphate glass.
The authors report an ambient-pressure differential scanning calorimetric study of a calcium metaphosphate glass that has been isostatically compressed slightly above its glass transition temperature and was frozen-in under pressure. It is shown that the enthalpy overshoot of the calorimetric glass transition is enhanced by this treatment. This enhancement is associated with a decrease in the apparent fictive temperature TfA that is determined using the enthalpy-matching approach. The origin of this correlation is discussed.
Yue
Yuanzheng
Y
Section of Chemistry, Aalborg University, DK-9000 Aalborg, Denmark. yy@bio.aau.dk
Wondraczek
Lothar
L
Behrens
Harald
H
Deubener
Joachim
J