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Han Zhang,Jianmeng Zhang,Hao Ding,Yangzi Li,Sijia Sun,Weihua Ao,Yu Liang 한국공업화학회 2022 Journal of Industrial and Engineering Chemistry Vol.114 No.-
In this study, the synthetic perovskite powder (SPP) was produced by solid-phase method using S-SCRand calcium carbonate (CaCO3), and its structure, morphology, and application as ceramic opacifier werestudied. The results show that SPP with a single perovskite phase can be obtained by grinding and calciningraw materials. Adding SPP as opacifier of sanitary ceramics for firing, a white ceramic glaze withexcellent opacity was obtained. Among the glaze chromaticity values, L* is 93.09, a* is 0.76 and b* is4.98. The opacity of the glaze is stronger than that of the glaze using ZrSiO4 and TiO2 as opacifiers, andthe whiteness of the glaze is significantly greater than that of glaze with TiO2. The ceramic glaze layerusing SPP is mainly composed of glass phase, titanite and quartz, of which titanite is the opacified phase. Importantly, TiO2 is pre-combined into perovskite to make it unable to freely and avoid its own hightemperaturephase transition reaction, which is the mechanism to inhibit the yellowing of glaze surfacecaused by direct use of TiO2. This study can play a positive role in improving the utilization value of S-SCRand eliminating the yellowing of ceramic glazes using TiO2 as opacifier.
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