Development of Nano-functional Materials Derived from Metal and/or'Ceramics Glasses as Precursors

以金属和/或陶瓷玻璃为前体衍生的纳米功能材料的开发

基本信息

批准号：
15205025
负责人：
MACHIDA Ken-ichi
金额：
$ 30.12万
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：
2003
资助国家：
日本
起止时间：
2003 至 2005
项目状态：
已结题

项目摘要

The present study was made to synthesize the nano-materials derived from metal and/or ceramic glasses and characterize their functional properties. The obtained results for the period of 2003-2005 are as follows :1)Preparation and microwave absorbing properties of metal-oxide nano-compositesThe metal-oxide nano-composites were derived from the quenched amorphous alloys in rare earth-iron binary or rare earth-iron-boron ternary systems by the subsequent HD (hydrogenation disproportionation) and oxidation processes. The resultant α-Fe/RE_O_3 or α-Fe/Fe_2B/RE_O_3 (RE=rare earths) showed good electromagnetic wave absorbing properties in a range of 1.5-18 GHz. This is due that the skin effect of α-Fe or Fe_2B magnetic particles is effectively lowered by forming such nano-composite particles.2)Preparation and ionic conducting properties of ceramic glasses containing some components for solid electrolytesThe oxide glasses containing solid electrolyte components such as (La, Sr)(Ga, Mg)O_<3-δ>or (Ce, Sm)O_<2-δ> were prepared and crystallized by the subsequent heating with an electric furnace or irradiating with a Nd:YAG laser. The resultant ceramic glasses showed good O^2-ion conducting characteristics and the fine ion conduction path was finely patterned on the surface of glasses. These results indicate they are possibly used as sensing probe and so on.3)Preparation and persistent spectral hole-burning propertiesThe oxy-halide glasses in ternary systems of CaX_2-SiO_2-Al_O_3 (X=F, Cl) were prepared by the molten method in air or H_2/N_2 mixed gas at ca. 1200℃. The resultant oxy-halide glasses showed excellent persistent spectral hole-burning (PSHB) properties with a high hole peak formation rate. Particularly, the hole peaks of CaCl_2-based glasses were persisted even at room temperature.

本研究的目的是合成金属和/或陶瓷玻璃纳米材料并表征其功能特性，2003-2005年期间获得的结果如下：1）金属氧化物的制备和微波吸收性能。纳米复合材料金属氧化物纳米复合材料是由稀土-铁二元或稀土-铁-硼三元体系淬火非晶合金经后续HD（氢化所得的α-Fe/RE_O_3或α-Fe/Fe_2B/RE_O_3（RE=稀土）在1.5-18 GHz范围内表现出良好的电磁波吸收性能，这是由于趋肤效应。通过形成这种纳米复合颗粒，可以有效降低α-Fe或Fe_2B磁性颗粒的含量。2)含α-Fe或Fe_2B磁性颗粒的制备及其离子导电性能制备了含有(La,Sr)(Ga,Mg)O_<3-δ>或(Ce,Sm)O_<2-δ>等固体电解质成分的氧化物玻璃，并通过随后的加热结晶化。电炉或 Nd:YAG 激光照射所得的陶瓷玻璃表现出良好的 O^2 离子传导特性，并且玻璃表面上形成了精细的离子传导路径。 3)制备及持久光谱烧孔性能采用空气或H_2熔融法制备了CaX_2-SiO_2-Al_O_3(X=F,Cl)三元系卤氧化物玻璃。 /N_2混合气体在约1200℃下表现出优异的持久光谱烧孔(PSHB)性能。特别是，CaCl_2 基玻璃的空穴峰即使在室温下也能持续存在。