Method of forming sodium beta-Al.sub.2 O.sub.3 films and coating

Coating processes – Electrical product produced – Metallic compound coating

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4273763, 4273833, 429104, 429193, 423600, 252313R, B05D 512, H01M 436

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active

042449863

ABSTRACT:
A sodium Beta-alumina thin film is coated onto a supporting substrate by forming an agglomerate-free, hydrolyzed sol, principally comprising an electrically surface active polymer formed by the hydrolysis and peptization of sodium and aluminum alkoxides, which is applied to the substrate. The substrate and applied sol are then heated to crystallize the polymer and form a solid film having pores with radii of up to about 250 Angstrom units.

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patent: 4082826 (1978-04-01), Iijima

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