Anodizing solution for anodic oxidation of magnesium or its allo

Details Anodizing solution for anodic oxidation of magnesium or its allo Anodizing solution for anodic oxidation of magnesium or its allo

1987-03-26

1988-05-17

Andrews, R. L.

Chemistry: electrical and wave energy

Processes and products

C25D 1130

Patent

active

047448725

ABSTRACT:
An novel solution for anodic oxidation of magnesium or magnesium alloy is prepared by dissolving silicate, carboxylate and alkali hydroxide in water. The anodic oxidation coating formed on the surface of magnesium or its alloy using the anodizing solution has a superior combination of properties, especially with respect to corrosion resistance, abrasion resistance and ornamental properties, as compared to any prior art anodic oxidation coating. The solution may further contains one or more compounds selected from the group consisting of borate, fluoride and phosphate, in addition to the foregoing essential components in order to obtain a further improvement.

REFERENCES:
patent: 2512563 (1950-06-01), DeLong
patent: 4551211 (1985-11-01), Kobayashi et al.
Handbook of Chem. & Physics, 32nd ed, 1951, pp. 908-909.
Annual Book of ASTM Standard, part 27, D 1732 (1974).

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