Ube Industries, Inc.

Ihi Corporation

Ishikawajima-harima Heavy Industries Co., Ltd.

Norifumi Miyamoto

Mitsuhiko Sato

Tsutomu Oishi

Michiyuki Suzuki

Yoshizumi Tanaka

Hideki Ohtsubo

Shinichi Ishitobi

Shin-Ichi Sakata

Hisayoshi Iba

Yasuyuki Ichizono

Provided are a ceramic composite for light conversion, which is capable of maintaining a high radiant flux even when the proportion of Gd and Ce is increased to tune the fluorescence peak wavelength to the longer wavelength side, a process for producing the ceramic composite, and a light emitting device including the ceramic composite. The ceramic composite for light conversion is a solidification product including a composition that is represented by a specific formula, and has a texture of continuously and three-dimensionally mutually entangled oxide phases including at least two phases of a first phase and a second phase, characterized in that the first phase is a YAlOfluorescent phase activated with Ce, and the second phase is an AlOphase, and the first phase and second phase account for 97% by area or more of a cross section of the solidification product, or characterized in that the first phase is a YAlOfluorescent phase activated with Gd and Ce, and the second phase is an AlOphase, and the first phase and second phase account for 97% by area or more of a cross section of the solidification product.

Ceramic composite for light conversion, process for production thereof, and light-emitting devices provided with same

A production process which comprises a preform formation step of forming a fiber preform made of silicon carbide short fibers having heat resistance of 1000&#xb0; C. or greater; a sol-gel preparation step of preparing a sol-gel solution containing a heat resistant compound having heat resistance of 1000&#xb0; C. or greater; an impregnation-drying-calcination step of impregnating the fiber preform with the sol-gel solution, followed by drying and calcining; and a crystallization step of crystallizing the fiber preform after impregnation, drying and calcination.

Fiber-reinforced heat-resistant sound-absorbing material and process for producing the same

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Yamaguchi, Japan

Norifumi Miyamoto