分相乳浊釉的研究

发布时间：2018-06-14 12:37

  本文选题：分相 + 乳浊釉　； 参考：《景德镇陶瓷学院》2015年硕士论文

【摘要】：乳浊釉因其有较高的遮盖能力,从而可以使大量劣质矿物原料及工业废料在坯料中得以广泛使用,有利于改善生态环境、降低生产成本。乳浊釉不仅在建筑卫生陶瓷行业、而且在日用陶瓷中都有着广泛的应用。乳浊釉按其形成机理可分为三大类：气相乳浊釉,晶相乳浊釉及分相乳浊釉。本文研究一种分相乳浊釉。以长石、石英、粘土、烧滑石、轻质碳酸钙、烧氧化锌、合成磷酸钙、萤石、硅酸锆等为原料,采用正交试验法制备一种在1250～1270℃的温度下烧成的分相乳浊釉。探讨了组成、制备工艺对乳浊釉釉面质量的影响；探讨了乳浊釉的乳浊机理。采用XRD、SEM、TEM、TG-DTA、 XRF、热膨胀仪、显微硬度计以及色度计等测试手段对试样进行测试表征。研究结果表明,本系统制备的分相乳浊釉其最佳组成为：长石39%、石英25%、粘土4%、烧滑石6%、轻质碳酸钙4%、烧氧化锌5%、合成磷酸钙4%、萤石3%、硅酸锆10%。适当提高烧成温度,其釉面白度会提高；当烧成为1270℃时,其釉面白度、光泽度分别为83.6、103。适当控制氧化阶段的保温时间、高火保温时间,釉面质量会得到提高。通过对釉层的物相及其结构分析可知,乳浊釉的形成机理是因为釉层中形成了大量的、液滴大小在0.1～0.2 μ m、而且分布均匀的分相结构；同时釉层中大量存在的、晶粒大小在1μm的硅酸锆晶体是乳浊釉形成的重要原因。釉层厚度约为0.5mm,坯釉中间层不明显,1270℃温度下烧成的坯釉热膨胀系数分别为7.5 × 10-6/℃,6.3×10-6/℃,坯釉结合良好,釉面显微硬度为848.9kg/mm2。
[Abstract]:Because of its high covering ability, opacified glaze can make a large number of inferior mineral raw materials and industrial wastes widely used in the blank, which is beneficial to improve the ecological environment and reduce the production cost. Opacified glaze is widely used not only in building sanitary ceramics industry, but also in daily use ceramics. According to its formation mechanism, opacified glaze can be divided into three categories: gas phase opacified glaze, crystalline opacified glaze and split phase opacified glaze. In this paper, a separate phase opacified glaze is studied. Using feldspar, quartz, clay, burnt talc, light calcium carbonate, calcined zinc oxide, synthetic calcium phosphate, fluorite and zirconium silicate as raw materials, a phase separation opacified glaze was prepared by orthogonal test at 1250 ~ 1270 鈩，

本文编号：2017407