Inorganic conversion coatings for ferrous substrate

Details Inorganic conversion coatings for ferrous substrate Inorganic conversion coatings for ferrous substrate

1999-01-14

2000-12-12

Beck, Shrive

Coating processes

Immersion or partial immersion

Metal base

4274301, 427435, B05D 118

Patent

active

061595527

ABSTRACT:
The formation of passivation coatings on ferrous substrates is disclosed by heating the substrate in an aqueous 1.0 to 6.0 M basic metal hydroxide treatment bath containing SiO.sub.2 and a water-soluble glycol, at a temperature that is effective to form a passivation coating on the substrate until the passivation coating is formed thereon, wherein the treatment bath contains from about 0.25 to about 1.0 moles of SiO.sub.2 per liter of glycol and water.

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Rossetti et al., "Kinetics of the hydrothermal crystallization of the perovskite lead titanate," Journal of Crystal Growth, 116, 251-259 (1992) ( no month).
Eckert et al., "Kinetics and Mechanisms of Hydrothermal Synthesis of Barium Titanate," Journal of the American Ceramic Society, 79(11), 2929-2939 (1996) (no month).
Bailey, "The Stability of Acmite in the Presence of H.sub.2 O," American Journal of Science, 267, 1-16 (1969) (no month).
Laine et al., "Synthesis of pentacoordinate silicon complexes from SiO.sub.2," Nature, 353, 642-644 (1991) (no month).
Daniels, et al., Formation and Prevention of Iron-Silicate Scales in Steam Generators, Cymric Field, California, Proc SPE Int. Symp. Oilfield Chem; 609 (1997) (No Month).

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