硅酸盐学报

种子诱导的结晶釉中硅酸锌晶化动力学

单位：1. 景德镇陶瓷学院材料科学与工程学院江西省先进陶瓷材料重点实验室江西景德镇 333001 2. 新加坡生物工程与纳米技术研究所 138669 新加坡

关键词：硅酸锌动力学结晶釉

分类号：TQ174

出版年,卷(期):页码：2014,42(12):0-0

DOI：

摘要：

以ZnO为晶种，研究了SiO2-Al2O3-ZnO-CaO-MgO-K2O-Na2O系统结晶釉中硅酸锌的可控析晶过程。结果表明：起装饰作用的盘状硅酸锌晶体由冰针形状硅酸锌晶粒组成，受釉层厚度的限制，晶体生长沿<0001>方向。采用 John William Mullin以及Johnson-Mehl-Avrami动力学模型模拟灼烧过程中晶体生长，低温下晶体生长主要受前驱体在玻璃相中扩散控制，而在高温下，则主要受前驱体和晶核界面反应控制。

A kinetic of the controlled crystallization process was investigated for a decorative ceramic glaze in the SiO2-Al2O3-ZnO-CaO-MgO-K2O-Na2O system using ZnO grains as crystal seeds. The decorative effect for plate-like spherulites consists of lath-like willemite (Zn2SiO4) crystals growing along their <0001> direction due to the constraint of the glaze thickness. The Mullin and Johnson-Mehl-Avrami kinetic models were used to predict the crystal growth in the glaze layer during firing. The predicted results indicate that the crystal growth rate is mainly controlled by the diffusion of the precursors through the glassy phases at low temperatures . Also, the crystal growth rate is mainly controlled by the interface reaction between the precursors and the crystals at high temperatures.

基金项目：

基金项目：国家自然科学基金(51262009);江西省自然科学基金(20122B AB203019, 20132BAB206017, 20122BAB202001); 江西省教育厅科技项目(GJJ13628);江西省高校大学生创新创业计划项目(201310408019)资助。

作者简介：

第一作者：展红全(1974—)，男，博士，副教授

参考文献：

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