Cobalt-free, black, dual purpose porcelain enamel glass

Details Cobalt-free, black, dual purpose porcelain enamel glass Cobalt-free, black, dual purpose porcelain enamel glass

1995-03-09

1996-04-30

Group, Karl

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

501 69, 501 21, 427475, C03C 3085, C03C 802

Patent

active

055125212

ABSTRACT:
A borosilicate glass composition suitable for porcelain enamel applications is disclosed. Accordingly, a black, cobalt-free composition which contains a significant amount of iron oxide was found to be suitable for enameling cast iron and non-pickled steel substrates. The inventive glass is suitable for applications requiring black color, acid resistance, thermal durability and water vapor resistance. In particular, the inventive glass can be used both as a ground coat and a cover coat.

REFERENCES:
patent: 5198393 (1993-03-01), Grebe et al.
patent: 5296415 (1994-03-01), Podesta
Kruchinin et al. ("Effect of Iron oxides on the structure and properties of sodium borosilicate enamels", Glass & Ceramics, pp. 364-367 (Translated from Steklo i Keramiks, No. 9, pp. 23--23, Sep. 1990, Plenum, New York).

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