Kinetics of refractory fiber glass devitrification

摘要

The kinetic model of Johnson-Mehl-Avrami was successfully applied to the devitrification of two alumina-silica based refractory glass fibers during the period of single phase crystallization. The volume fraction crystallized was found as a function of time and temperature. Linear shrinkage in a fiber was calculated as a function of volume fraction crystallized. This allows the practical prediction of performance of a fiber based on linear shrinkage at the actual use temperature.