Search of processing methods for structure control of inorganic materials

本课题的研究目标是在详细分析材料加工过程中的反应方案以及材料的纳米和微观结构分析的基础上，开发无机材料原位微结构控制工艺。在固相反应过程中，开发了固-气体系反应控制合成形貌可控氮化硅粉末和纳米颗粒烧结体微观结构控制的新方法。通过控制多面体的配位，可以开发出一种新的荧光材料。研究发现，溶液或液体中的反应控制是传感器结构与玻璃基质中纳米颗粒杂化的最重要的关键因素。化学溶液处理确实有助于发现一种具有笼状结构的新物质，并开发出超高防水材料。通过化学气相反应，仔细考察了微结构控制因素，以制备设计良好的多层薄膜。这些结果有望为具有设计的微结构和性能的材料的开发和材料科学与工程的建立做出重要贡献。

The object of this research project is the development of the processing for the in-situ microstructure control of inorganic materials on basis of detailed analyzes of reaction schemes during the materials processing as well as microstructural analyzes of materials at nano-and micro levels.In the solid state reaction processing, the novel methods were developed for the synthesis of morphologically controlled silicon nitride powders by the reaction control of a solid-gas system, and for the microstructure control of sintered bodies with nano-sized particles. A new fluorescence material could be developed by the control of coordination of polyhedrons. The reaction controls in solutions or liquids were found to be the most important key factor to hybridize a sensor structure and nano particles in glass matrix.. The chemical solution processing did contribute to the discovery of a new substance with cage-structure and a development of super high water repellent material. This processing also led to the development of a new system for the micropattering of wave guides and value-added materials.Through the chemical vapor reactions, the microstructure control factors were carefully examined to process the well-designed multi-layred films.These results are expecting to contribute greatly to the materials development with designed microstructures and properties and to the establishment of the materials science and engineering.