A test of the Hruby parameter to estimate glass-forming ability

Experimental nucleation and growth rates for some glasses that nucleate in the bulk were used to calculate critical cooling rates for glass formation (R-c) by the TTT method. Resulting critical cooling rates were consistent with laboratory melting and quenching and also with experimental data of critical cooling rates for lithium disilicate glass. Strong correlation between the Hruby parameter of glass stability (K-gl) and the glass-forming ability, evaluated by R-c, was found. Therefore, K-gl can be used to estimate the glass-forming ability for glasses that exhibit volume nucleation. (C) 1997 Published by Elsevier Science B.V.