The formation mechanism of titania based opacified glaze is discussed in this paper. The glaze system composed of albite, kaolin, talc, calcite, quartz, titanium dioxide and zinc oxide is used to adjust the glaze formula and to obtain the glaze samples with better opacifying effect. The whiteness and glossiness of glaze products formed with different TiO₂ contents are characterized by whiteness meter and gloss meter respectively. The structure of glaze layer is analyzed by means of SEM, TEM and EDS. The results show that the introducing of TiO₂ can promote the phase separation and forms the special Si-rich/Ti-rich core-shell nanostructure. During the cooling process of the glaze, the liquid-liquid phase separation occurs and results in the formation of uniform Si-rich nanoparticles. While the Ti-containing components are enriched at the interface between the different phases and a special spherical core-shell structure is obtained around the Si-rich nanoparticles. The glaze layer is filled with the core-shell nanospheres and shows a network structure like opal. However, due to the decrease of cationic content (Ti, Zn, Ca, and Mg) in the interface between glaze and body, the network nanostructure like reverse opal would be formed. In the interaction of special opal and reverse opal structure, the opacifying effect is enhanced obviously.

本文探讨了二氧化钛基不透明釉的形成机理。由钠长石，高岭土，滑石，方解石，石英，二氧化钛和氧化锌组成的釉料体系用于调节釉料配方并获得具有更好遮光效果的釉料样品。分别用白度计和光泽度计表征了TiO ₂含量不同的釉料产品的白度和光泽度。通过SEM，TEM和EDS分析了釉层的结构。结果表明，TiO ₂的引入可以促进相分离并形成特殊的富硅/富钛核-壳纳米结构。在釉料的冷却过程中，发生液相-液相分离并导致形成均匀的富硅纳米颗粒。虽然含钛组分在不同相之间的界面处富集，并且在富硅纳米颗粒周围获得了特殊的球形核-壳结构。釉层填充有核-壳纳米球，并显示出类似蛋白石的网络结构。但是，由于釉和物体之间的界面中阳离子含量（Ti，Zn，Ca和Mg）的减少，会形成像反蛋白石的网络纳米结构。在特殊蛋白石与反向蛋白石结构的相互作用中，乳浊效果明显增强。