Electrofusion method of producing boron aluminum oxide refractor

Details Electrofusion method of producing boron aluminum oxide refractor Electrofusion method of producing boron aluminum oxide refractor

1979-05-08

1980-10-07

Poer, James

Compositions: coating or plastic

Coating or plastic compositions

Metal-depositing composition or substrate-sensitizing...

423279, C04B 3510

Patent

active

042266297

ABSTRACT:
A refractory material, which comprises 78-94 Wt % of Al.sub.2 O.sub.3 and 15-6 Wt % of B.sub.2 O.sub.3 to have 9Al.sub.2 O.sub.3.2B.sub.2 O.sub.3 phase and is highly resistant to spalling and corrosion by a B.sub.2 O.sub.3 -containing vapor, is produced by electrofusion of a powder mixture of Al.sub.2 O.sub.3 and B.sub.2 O.sub.3 with the addition of at least one alkali metal oxide or carbonate to adequately lower the electrical resistance of the material. The amount of the alkali metal compound is controlled so that the product may not contain more than 2 Wt % of Li.sub.2 O, Na.sub.2 O and/or K.sub.2 O thereby to accomplish the object without adversely affecting the spalling and corrosion resistance of the product.

REFERENCES:
patent: 2118143 (1938-05-01), Benner et al.

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