釉熔体中界面诱导下的钛基晶体多尺度析晶机理及其釉性能研究

The micro, nano or macroscale Titanium-based Crystals in the glaze melt play a important role in the art deco and function improvement, however, the multiscale crystallization mechanism has not yet been elucidated. Due to the variable and high temperature, complex ingredient, the size-controlling is more difficult in the glaze melt. Our preliminary study has revealed that the interface control plays a key role in the crystal growth of the glaze melt. So, with a new idea of the interfacial regulation, this project is focusing on the multiscale crystallization behavior including nucleation, growth, size-controlling and kinetics of Titanium-based crystals in the glaze melt and the corresponding relationship between the internal crystallographic structure and the glaze performance. In this project, the multiscale crystallization mechanism of the materials induced by the interface of solid-liquid, liquid-liquid, or gas-liquid in the glaze melt will be investigated. The structure of the interfaces between crystal nuclei and melt, the structure of the melt near the interfaces, the mass diffusion of the precursor and interfacial reaction will be studied. The composition of titanium-based materials combined with different elements in the multiple ingredient melt will be tuned. It will be proposed that the multi-scale crystallization and controlled mechanism of the titanium-based crystals induced by the interface and a corresponding crystal growth model will be built up. The structure-performance relationship between the crystals and the properties of the glaze will be revealed. The patented technology of multi-functional ceramic products with multi-scale crystals and diverse artistic decorative effects can be awarded. The successful implementation of this project will provide a new direction to the other crystal growth in the glaze melts.

釉熔体中微纳及宏观尺度钛基晶体对制品起着艺术装饰和功能增强的重要作用，然而其多尺度析晶机理尚未阐明。受限于高温多变、组份复杂等因素，釉熔体中晶体尺度调控更加困难。课题组前期研究揭示，界面调控对釉熔体中的晶体生长起到关键作用。因此，本项目以釉熔体中钛基晶体的多尺度析晶为研究对象，采用界面诱导的新思路，探索晶体成核生长、尺度控制、动力学及其结构与釉性能间的构效关系等内在规律。项目拟研究固液、液液、气液等釉熔体中三种界面诱导下的钛基晶体多尺度析晶机理，研究晶核界面结构、界面附近熔体结构及前驱体的传质和界面反应，控制多组份釉熔体中不同元素与钛的组合析出形式；揭示界面诱导下的钛基晶体多尺度析晶与调控机理，构建该体系下的晶体生长动力学模型，明确不同尺度钛基晶体结构与釉性能的构效关系，获得含有不同尺度晶体、实现多样艺术效果、具备各种功能的陶瓷专利技术。本项目的实施将为釉熔体中其他晶体生长研究提供新思路。

釉熔体中微纳及宏观尺度钛基晶体对制品起着艺术装饰和功能增强的重要作用，然而其多尺度析晶机理尚未阐明。受限于高温多变、组份复杂等因素，釉熔体中晶体尺度调控更加困难。项目以釉熔体中钛基晶体的多尺度析晶为研究对象，采用界面调控的新思路，探索了晶体成核生长、尺度控制及其微纳结构与釉乳浊性能间的构效关系等内在规律。项目对釉熔体中的液液分相形成的界面进行了深入的研究，探究了在该界面诱导的作用下，钛、硅、锌、钙等不同元素离子的组合析出机理，揭示了二氧化钛、石英、石灰石、氧化锌等对釉熔体中的微纳米结构调控及其乳浊性能的影响。通过研究发现了釉熔体中非晶光子晶体微纳结构的形成对釉面结构呈色起到关键作用，这一发现也突破了色釉料化学呈色的传统观念，为色釉料呈色新技术提供了重要的理论支持。项目主要研究包括以下：(1) 研究釉熔体中成核剂、网络剂、稀释剂等对核壳纳米颗粒的形成及尺度调控规律，揭示了一种特殊的核壳非晶结构增强釉乳浊效果的新颖机理，也为生产可以替代传统锆釉的高光泽度和综合外观性能的含钛乳浊釉提供了新思路；(2) 研究修饰剂对釉熔体中非晶光子晶体微纳结构的调控及与釉面呈色性能的关系，探究了釉熔体中非晶光子晶体的形成演化机理，通过调节非晶光子晶体微纳结构从而实现釉面结构发色；(3) 基于动力学的角度，研究了几种微纳米晶体的生长机理、晶面调控及其与性能之间的关联。本项目致力于继承传统陶瓷文化、发扬传统陶瓷技术，通过现代科技手段不断挖掘中国古代陶瓷技艺的精髓，以提升我国传统陶瓷技术工艺。本项目的成果将为釉熔体中其他晶体生长研究提供新思路。