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

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

1979-04-24

1981-01-13

Smith, Ronald H.

Coating processes

Electrical product produced

Metallic compound coating

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

Patent

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.

REFERENCES:
patent: 2400709 (1946-05-01), Patrick
patent: 2656321 (1953-10-01), Hunter et al.
patent: 2686159 (1954-08-01), Webb et al.
patent: 2903418 (1959-09-01), Kirshenbaum et al.
patent: 3901733 (1975-08-01), Toy et al.
patent: 3946102 (1976-03-01), Thomas
patent: 3959022 (1976-05-01), DeJonghe et al.
patent: 4041215 (1977-08-01), Kormanyos et al.
patent: 4082826 (1978-04-01), Iijima

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