The Dow Chemical Company

Theresa A Guiton

Kevin E Howard

Stephen D Dunmead

William G Moore

Arne K Knudsen

Noboru Hashimoto

Lynne K Mills

Hiroyoshi Yoden

Yi-Hung Chiao

William Rafaniello

Kyoji Tanaka

Susumu Kajita

Kevin C Morse

Laura L Beecroft

JunHong Zhao

Aluminum nitride sintered body with high thermal conductivity and its

Aluminum nitride powder, aluminum nitride platelets, powdered solid solutions of aluminum nitride and at least one other ceramic material such as silicon carbide, and composites of aluminum nitride and transition metal borides or carbides are prepared by combustion synthesis at low gaseous nitrogen pressures. Porous bodies of aluminum nitride or composites of aluminum nitride and transition metal borides or carbides are also prepared by combustion synthesis at these pressures. The porous bodies are suitable for infiltration, either as formed or after being coated with at least one layer of a silicate material, by polymers or metals. The powders are also suitable for preparing dense sintered bodies. The aluminum nitride powder is also used to prepare AlN sintered bodies.

Aluminum nitride, aluminum nitride containing solid solutions and

Prepare sintered aluminum nitride bodies having a thermal conductivity of at least 200 W/m-K by sintering under non-reducing conditions and controlling interrelated parameters such as binder burnout atmosphere, heating rate, sintering temperature, time at sintering temperature, cooling rate and cooling temperature. Sintered bodies having thermal conductivities in excess of 200, especially in excess of 270, W/m-K result from this process.

Process for sintering aluminum nitride to a high thermal conductivity

Moisture-resistant aluminum nitride powder which is treated with an yttrium-containing compound. The method of treating the aluminum nitride compound includes (a) thoroughly mixing a slurry containing aluminum nitride powder, an yttrium-containing compound, and a solvent for the yttrium-containing compound in the absence of any surfactant and (b) removing the solvent from the slurry. The moisture-resistant aluminum nitride powder may be used in aqueous formulations for making ceramic articles.

Moisture-resistant aluminum nitride powder and methods of making and

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Midland, MI, United States of America

Theresa A Guiton