Dynamic calorimetric measurements are performed for the quaternary metallic
glass Zr65Al7.5Cu17.5Ni10 in order to analyse the dependence on different
heating rates for the glass transition temperature T-g. We compare two diff
erent temperature programs used for sample relaxation, to estimate the infl
uence of the thermal history on T-g. A lower limit for the glass transition
temperature T-g was calculated according to two different models based on
the fact, that width and temperature of the glass transition depend on the
experimental time scale set by the heating rate: One model assumes a Vogel-
Fulcher-Tammann type behaviour, as used to describe more or less "fragile"
glass formers and the other assumes an Arrhenius-like behaviour, which is r
elated to "strong" glass formers. The values obtained from both models diff
er by about 80K. From additional absolute specific heat capacity measuremen
ts we calculate the Kauzmann temperature T-K, as a lower limit for the temp
erature of the glass transition from thermodynamic aspects. Comparing T-K W
ith the temperature values obtained from the two evaluation models we can c
lassify the quaternary metallic glass Zr65Al7.5Cu17.Ni-5(10) to behave more
like a "strong" glass former.