Method of manufacturing aluminum borate whiskers having a reformed surface based upon gamma alumina
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United States of America Patent
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Jan 2, 1996
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N/A
app pub date -
Feb 14, 1995
filing date -
Feb 14, 1994
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Abstract
Aluminium borate whiskers by which a composite material having a higher strength than ever is available by definitely suppressing a generation of spinel along the surface of the whiskers are prepared by heating aluminium borate whiskers bearing a r-alumina surface layer in an atmosphere of ammonia gas or ammonia gas and a hydrocarbon gas such that a layer of a nitro-oxide and oxide of aluminium is generated along the surface of the whiskers.
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