含锐钛矿TiO2的陶瓷釉的制备、稳定机理及性能研究

项目名称： 含锐钛矿TiO2的陶瓷釉的制备、稳定机理及性能研究

项目编号： No.51502097

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 一般工业技术

项目作者： 彭诚

作者单位： 华南理工大学

项目金额： 20万元

中文摘要： 将具有光催化活性的锐钛矿TiO2应用于传统陶瓷产品上，能够赋予产品抗菌、易洁等功能，一直是陶瓷领域研究人员努力的方向。但锐钛矿TiO2的热稳定性差，在500-600度会转变为金红石而失效。目前已有的方法如掺杂改性和形成复合结构提高其热稳定性都无法满足在陶瓷釉中应用的要求。针对这一问题，本项目采用磷酸钛热分解法制备含锐钛矿的陶瓷釉，通过对熔块釉中TiO2晶粒形成、生长过程的热力学和动力学过程进行研究，明确高温下釉与TiO2生长的关系，确定锐钛矿TiO2在釉中的热稳定机理，构建釉的物理化学性质、釉面的晶相构成和形貌、以及釉面性能之间的关系；期望获得可以在1100度以上快速烧成、具有一定的光催化活性、较好耐磨性的含锐钛矿陶瓷釉。

中文关键词： 锐钛矿；热稳定性；釉；光催化陶瓷；动力学

英文摘要： The application of anatase TiO2 to traditional ceramics, giving rise to antibacterial and easy-to-clean properties, has been a active field in ceramic research and development. However, an obstacle to overcome is that anatase is metastable and will transform to rutile above 500-600 degree C. Currently the methods to improve its thermal stability has limited effect to meet the requirement for the application in ceramic glaze. To address the issue, a thermal decomposition method is utilized to prepare ceramic glaze with anatase TiO2 grains. We will focus on the thermodynamic and kinetics of TiO2 crystallization and growth processes, clarify the effect of high temperature solution phase during these processes. By elaborating the relationship of phase composition, microstructure and properties of the glaze, it is anticipated to find a new way to ceramic glazes with good wear resistance and apparent photocatalytic performance which survive 1100 degree C firing.

英文关键词： anatase;thermal stability;glaze;photocatalytic ceramic;kinetics