天然硼钙石质低温生料透明釉的研制

PREPARATION OF RAW TRANSPARENT GLAZE FIRED AT LOWER TEMPERATURE WITH NATURAL CALCIUM BORON

以天然矿物硼钙石、钾长石、龙岩高岭、萍乡石英、广西滑石和ZnO、BaCO3为原料,采用普通陶瓷工艺,制备了透明度好,光泽度高且性能稳定的低温无铅无熔块生料透明釉。通过研究烧成温度对釉面性能的影响,得出了釉的最佳烧成温度为1100℃,保温30min。同时,研究了硼钙石含量对釉面性能的影响,发现随着硼钙石含量的增多,釉面析出白色晶体。当加入的硼钙石所对应的B2O3含量为0.1634mol时,此时获得的无铅无熔块生料透明釉透明度最高。

A raw transparent glaze fired at lower temperature with lead-free, frit-free, high transparency, high gloss and high steady performance was prepared by an ordinary ceramic preparation method, using natural mineral calcium boron, potassium feldspar, Longyan kaolin, Pingxiang quartz, Guangxi talc, ZnO and BaCO3 as raw materials. The effects of the firing temperature and the amount of natural calcium boron on the glaze properties were investigated. The results indicate that the glaze fired at 1100 ℃ for 30 rain has good performance. Meantime, with the increasing of natural calcium boron, the transparent and shining glaze exhibits white crystals. When the content of B2O3 pertaining to the added natural calcium boron is 0.1634mol, the transparency of the lead- and frit-free raw transparent glaze is the highest.