陶瓷微晶玻璃釉的制备工艺

选择CaO-MgO-Al2O3-SiO2系统作为微晶玻璃釉的基本组成，研究微晶玻璃釉的制备工艺，并考察施釉方法、坯釉结合、添加少量粘土对工艺的影响．结果表明，湿法施釉应考虑制品对釉面平滑度和光泽度的要求，当湿法施釉工艺可以达到釉面细腻光滑时，可以得到具有亚光效果的微晶釉；以烧结坯作为微晶釉的基体时，坯釉结合良好，机械敲击无法使坯釉分离．外加少量高岭土可影响玻璃体起始析晶温度和晶化温度、微晶釉的显微结构和性能，对机械性能如硬度等会造成不利影响，并可能不利于其热力学性能．

Studying on Basic Technology of Ceramic-Glass Glaze

The basic technology of CaO-MgO-Al_2O_3-SiO_2 system ceramic-glass glaze was discussed.Focal point of the research included glazing method,glaze-body bonding and impact of adding a little kaolin.The result showed:(1) Smoothness and glossiness of glaze should be considered when ware was glazed by wet process glazing.Generally,ceramic-glass glaze by wet process glazing would be mat glaze unless glaze surface was polished.(2) It showed good glaze-body bonding when sintered body was chosen as matrix,and glaze would not be separated from body by mechanical impact.(3) Crystallization temperature(t_g,t_p),microstructure and performances of glass were varied by adding a little kaolin to frit.It was bad to mechanical performance of glaze such as hardness and wear resistance,also was thermal performance.