Taimei Chemicals Co., Ltd.

Xebec Technology Co., Ltd.

Atsushi Odaka

Suguru Matsushita

Takayuki Fujita

Norihiko Sumiyoshi, Legal Representative

Yoshihiko Sumiyoshi, Legal Representative

Sachiko Sumiyoshi, Legal Representative

For the purpose of producing an alumina composite in which the integrity between alumina and an inorganic material is further improved, a dispersion liquid preparation step, a solidification step and a burning step are performed, wherein the dispersion liquid preparation step comprises preparing a dispersion liquid in which an inorganic material such as a carbon material is homogeneously dispersed in an alumina raw material solution having an organic additive dissolved therein, the solidification step comprises drying the dispersion liquid to produce a solid raw material, and burning step comprises burning the solid raw material in a non-acidic atmosphere while contacting hydrogen chloride with the solid raw material. In this manner, an alumina composite can be produced, in which at least a portion of an inorganic material such as a carbon material is embedded in the inside of each of &#x3b1;-alumina single crystal particles the constitute alumina particles.

Alumina composite, method for manufacturing alumina composite, and polymer composition containing alumina composite

In the manufacture of a brush-shaped grindstone (), embedding holes () are formed in a grinding element holding surface () of a holder () in mutually separated positions. A base end side of a plurality of wire-shaped grinding elements (), formed such that a composite yarn composed of inorganic filaments is impregnated and hardened with a resin, is aligned, and rod assemblies () are thereafter formed by fixing the base end side of the plurality of wire-shaped grinding elements () with adhesive () in holes () of a die material (), which is formed to have substantially the same size as the embedding holes () of the holder (). The rod assemblies () are thereafter embedded in the embedding holes () of the holder (), and fixed with adhesive (). Whereby, removing burrs from a precision work component, performing polishing, and the like can be carried out with good efficiency and high precision.

Polisher brush having wire-shaped grinding elements

Growing community of inventors

Kamiina-gun, Japan

Atsushi Odaka