Stock material or miscellaneous articles – Composite – Of quartz or glass
Patent
1989-08-14
1991-01-08
Ryan, Patrick J.
Stock material or miscellaneous articles
Composite
Of quartz or glass
423412, 428426, 428698, 428699, 428701, 428901, 501 96, 501 98, 528 9, B32B 1706
Patent
active
049834622
ABSTRACT:
A method for preparing high-purity aluminum nitride having high thermal conductivity and heat resistance for aluminum nitride substrates, which comprises the steps of reacting an organic aluminum compound with an aminotriazine in a solvent to obtain an aluminum nitride precursor, separating the precursor form the solvent, and heating the precursor at a temperature of 600.degree. C. or more in a reducing atmosphere and/or a non-oxidizing atmosphere. An aluminum nitride sinter is prepared by, if necessary, adding a sintering auxiliary to the above aluminum nitride powder, molding the powder into a desired shape, and then sintering the molded material at a temperature of 1,600.degree. to 2,000.degree. C. in a non-oxidizing atmosphere.
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Hiai Atsuhiko
Tanaka Masao
Tanaka Takao
Wakimura Kazuo
Mitsui Toatsu Chemicals Inc.
Ryan Patrick J.
Turner Archene A.
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