Asahi Glass Company, Limited

Ag Technology Co., Ltd.

Keiichiro Suzuki

Masataro Okumiya

Tomoko Ichii

Nobuhiro Shinohara

Takuro Ono

Masakatsu Fujisaki

Satoshi Ogaki

Yuji Shimao

A firing container for silicon nitride ceramics, which is a hermetically sealed container having a gas inlet and a gas outlet, characterized in that the interior of the hermetically sealed container is partitioned by a gas supply chamber partition plate into a gas supply chamber communicating with the gas inlet, and a firing chamber to accommodate an object to be heat-treated and communicating with the gas outlet, and the gas supply chamber partition plate has vent holes selectively formed in the vicinity of its periphery.

Firing container for silicon nitride ceramics

A low thermal expansion cordierite aggregate, which consists mainly of cordierite crystals having a mean crystal diameter of at least 50 .mu.m and has little orientation in the crystal structure, shows hysteresis in its thermal expansion property accompanying a rise and fall of the temperature, and has a mean thermal expansion coefficient within a temperature range of from room temperature to 1000.degree. C. of at most 10.times.10.sup.-7 /.degree.C.

Low thermal expansion cordierite aggregate and its bonded body

A silicon carbide sintered article composed essentially of elongated and/or plate-like grains of a SiC-AlN solid solution consisting essentially of from 2 to 20% by weight of Al, from 0.2 to 10% by weight of N, from 0.2 to 5% by weight of O, from 0 to 15% by weight of a Group IIIa element, and the rest being substantially Si and C.

Silicon carbide-aluminum nitride sintered article and process for its

A dense sintered silicon carbide ceramic has high strength and a flexural strength of at least 25 kg/mm.sup.2 at room temperature and 1400.degree. C. which is obtained by molding a mixture of an aluminum oxide source at a ratio of 0.5 to 35 wt. % as Al.sub.2 O.sub.3 and silicon carbide at a substantial residual portion followed by a pressureless sintering.

Growing community of inventors

Yokohama, Japan

Keiichiro Suzuki