Compositions: ceramic – Ceramic compositions – Refractory
Patent
1986-11-28
1989-02-14
Bell, Mark L.
Compositions: ceramic
Ceramic compositions
Refractory
501127, 501153, C04B 3548, C04B 3510
Patent
active
048046469
ABSTRACT:
A high strength low density opaque shaped aluminum borate product is disclosed characterized by an MOR of at least 45,000 psi and a density of approximately 2.9 g/cm.sup.3. The shaped aluminum borate may be formed by reacting an aluminum oxide with a boron oxide at a temperature of at least 800.degree. C., grinding the reaction product, pressing the resulting particulate into a shaped form and sintering the shaped particulate at a temperature of from 800.degree. to 1400.degree. C. while maintaining the shaped particulate under a pressure of 2500 to 3500 psi.
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Alexander Andrew
Aluminum Company of America
Bell Mark L.
Taylor John P.
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