Method for determining the thermal expansion coefficient of ceramic bodies and glazes

摘要

A method of measuring the coefficient of thermal expansion of a ceramic material, including the steps of applying a glaze to a substantially densified refractory body, wherein the coefficient of thermal expansion of either the glaze or the body is known, bonding the glaze to the body, putting the glaze insufficient tension to induce crazing, measuring the average distance between cracks in the crazed glaze; and determining the unknown coefficient of thermal expansion of the glaze or body.