A Research on Multi-functional Ceramic Based Nanocomposites

在纳米复合材料技术的基础上，我们提出了“多功能材料”（Intermaterials）的新材料设计概念，即在复合材料中实现机械和电气等多种功能。为了开发这种新型材料，迫切需要密切的国际合作研究。因此，我们提出了日美韩国际研究项目。科学产业研究所、日本大阪大学、美国麻省理工学院、韩国科学技术研究院等3个著名研究小组参与了该项目。本项目旨在通过纳米复合技术和分子水平复合技术的应用，阐明提高陶瓷基、金属基和聚合物基复合材料的力学性能和功能性能的机理，并开发各种多功能材料（Intermaterials）。本课题的最终目标是在纳米复合技术的基础上，提出具有更好多功能性能的纳米/簇复合材料概念。本项目的主要成果如下：1)开发了新的制备工艺，获得了高性能的陶瓷基纳米复合材料。包括原位复合在内的新型粉末制备和烧结工艺得到了发展。这导致了陶瓷/陶瓷和陶瓷/金属纳米复合材料系统中高性能纳米复合材料的连续制造。2)多功能陶瓷复合材料的设计、开发。我们成功地获得了具有多种性能的新型纳米复合材料，在一种复合材料中实现了机械性能和功能性能。在陶瓷/金属纳米复合体系和功能陶瓷基纳米复合材料中，成功地为结构陶瓷添加了新的功能，并对功能陶瓷（如铁电材料和离子导电材料）的机械性能进行了卓越的改进。3)纳米级和分子级结构控制构建新型有机无机复合材料的研究进展。将纳米复合技术和分子设计理念应用于高分子材料，开发出高性能纤维增强塑料和分子复合材料。这些材料即使在低温下也表现出优异的机械性能和热性能。这些结果显示了实现多功能纳米和分子复合材料（Intermaterials）的可能性。少

On the basis of the nanocomposite technology, we have proposed the new materials design concept "multi-functional materials" (Intermaterials), in which multi-functions such as mechanical and electric properties are realized in a composite. In order to develop such a novel material, close international collaboration researches is strongly required. Therefore, we have proposed Japan-United States-Korea international research project. Three famous research groups, the institute of Scienlific and Industrial Research, Osaka University (Japan), MIT of United States of America, and Korea Institute of Science and Technology, are joined in this project.The purpose of this project are to clarify the mechanisms of mechanical and functional properties improvements and to develop various kinds of multi-functional materials (Intermaterials) including of ceramic-, metal- and polymer-based composites by applying this nanocomposite technology and molecular-level compositing technology. The final target … More of this project is to propose the nano/cluster composite concept with better multi-functional properties, based on the nanocomposite technology.The main results obtained from this project is as follows :1) Development of new fabrication processing to obtain high-performance ceramic-based nanocomposites. Novel processing of powder preparation and sintering including in-situ compositing processes have been developed. This resulted in successive fabrication of high-performance nanocomposites in ceramic/ceramic and ceramic/metal nanocomposite systems.2) Design, development of multi-functional ceramic composites. We have succeeded to obtain new nanocomposites with multi-performance, in which both mechanical and functional properties have been realized in one composite materials. Here, adding new functions to structural ceramics as well as superior improvement of mechanical properties of functional ceramics (such as ferroelectric and ion conducting materials) have been succeeded in ceramitc/metal nanocomposite systems and functional-ceramic-based nanoconiposites.3) Development of novel organic-inorganic composites constructed by nano- and molecular-level structural control. By attempting nanocomposite technology and molecular design concept to polymer materials, high-performance fiber-reinforced plastics and molecular-composites have been developed.These materials indicated the superior mechanical and thermal properties even at cryogenic temperatures.All these results shows the possibility of realizing multi-functional nano- and molecular-composites (Intermaterials). Less