Chemical Synthesis of Ceramics Using Molecularly Modified Alkoxide Precursors

本文研究了一种新型的混合型聚乙烯醇的合成及加工工艺。 氧化物溶胶-凝胶陶瓷这项研究涉及一个 全面检查控制的基本过程 前体的同时水解，凝胶化动力学 和凝胶到陶瓷的转化，以及表征 最终产品的微观结构和电性能。 对于前体的合成，可以使用不同的前体的共水解。 醇盐将通过改性其 分子结构研究凝胶化和 转换过程是建立之间的关系， 前体的分子结构，所得产物的结构 凝胶，和中间微晶的结构， 转换.对溶胶-凝胶过程的基本理解将 从而导致用于电子和结构新的和改进的陶瓷 应用.

This is a study of the synthesis and processing of novel mixed oxide sol-gel derived ceramics. The research involves a comprehensive examination of the fundamental processes controlling the simultaneous hydrolysis of precursors, the kinetics of gelation and gel to ceramic conversion, as well as the characterization of the microstructure and electrical properties of the final products. For the synthesis of the precursors the co-hydrolysis of different alkoxides will be controlled through the modification of their molecular structure. The objective of studying the gelation and conversion processes is to establish the relationship between the molecular structure of precursors, the structure of the resulting gels, and the structure of the intermediate crystallites during conversion. A fundamental understanding of the sol-gel process will lead to new and improved ceramics for electronic and structural applications.