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Studies on the Development of Multifunctional Ceramic Materials Controlled

可控多功能陶瓷材料的开发研究

基本信息

批准号：
13305049
负责人：
NIIHARA Koichi
金额：
$ 35.28万
依托单位：
Osaka University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (A)
财政年份：
2001
资助国家：
日本
起止时间：
2001 至 2003
项目状态：
已结题

项目摘要

In this research project, we have developed many kind of intermaterials with excellent multi-functionality by controlling materials structure in atomic, molecular and nano-scales. followed results have been obtained.(1) New class of ceramics in Li-Nb-Ti-O was developed. This material has layer-by-layer superlattice, and we have succeeded to control its distance. Based on the anisotropic structure, tin-films and self-organized composite crystal consisted from oriented, rod-like precipitate within the superstructured single crystals.(2) Properties of Na-Co-O thermoelectric ceramics have been improved by controlling the chemical compositions. Sinterability and Figure-of-merit of the materials was enhanced by doping small amount of oxides.(3) Electric functionalization of insulating structure ceramics such as silicon nitride, zirconia, and so on have been developed by introducing 3-dimensional continuous conductive network into ceramics. As the results ionic and electron conductive ceramics with wide variety of conductivity have been developed.(4) Pressure sensor consisted from soft-organic materials and inorganic conductive particles and strengthening nano-sized ceramic fillers have been developed. These nanosensor can detect from low to high load (pressure) by deformation. Also bio-compatible organic-inorganic hybrid materials have been developed, which exhibited excellent mechanical properties, chemical stability and bio-compatibility.

在本研究项目中，我们通过在原子、分子和纳米尺度上控制材料结构，开发了多种具有优异多功能性的中间材料。获得了以下结果。(1)开发了Li-Nb-Ti-O系新型陶瓷。这种材料具有逐层超晶格，我们已经成功地控制了它的距离。基于薄膜的各向异性结构，薄膜和自组织复合晶体是由超结构单晶中的定向棒状沉淀物组成的。(2)通过控制Na-Co-O系热电陶瓷的化学成分，改善了其性能。少量氧化物的掺杂提高了材料的烧结性能和品质因数。(3)通过在陶瓷中引入三维连续导电网络，实现了氮化硅、氧化锆等绝缘结构陶瓷的电功能化。因此，研制出了具有多种电导率的离子导电陶瓷和电子导电陶瓷. (4)研制了一种由软有机材料、无机导电颗粒和增强型纳米陶瓷填料组成的压力传感器。这些纳米传感器可以通过变形检测从低到高的负载（压力）。生物相容性有机-无机杂化材料也已被开发出来，它表现出优异的机械性能，化学稳定性和生物相容性。