When heating temperature reached 300℃, crackings appeared on the surface of ceramic tiles but the microstructure of glaze exhibited no apparent change when heating temperature reached 900℃, the glaze melted, the crystal Structure of the tiles broke down,
When heating temperature reached 300℃, crackings appeared on the surface of ceramic tiles but the microstructure of glaze exhibited no apparent change when heating temperature reached 900℃, the glaze melted, the crystal Structure of the tiles broke down,
当温度达到300℃，冷却试验时，釉面可产生裂纹，但显微结构基本无变化；当温度达到900℃，冷却试验时，釉面出现熔化现象，坯体晶体结构酥裂、破碎，完整性遭到破坏，强度基本丧失。