Aqueous anodizing solution and process for coloring article of m

Details Aqueous anodizing solution and process for coloring article of m Aqueous anodizing solution and process for coloring article of m

1984-07-17

1985-11-05

Silverberg, Sam

Chemistry: electrical and wave energy

Processes and products

204564, 148 61, C25D 550

Patent

active

045512116

ABSTRACT:
An aqueous anodizing solution for anodizing an article of magnesium or magnesium-base alloy which contains, per one liter volume thereof, 20-300 g. of an aluminate, 0.5-8 moles of an alkali hydroxide per one mole of the aluminate, and at least one kind selected from the group consisting of 20-200 g. of a boron compound, 2-50 ml. of a phenol, 2-50 g. of a sulfate, and 5-70 g. of an iodine compound. A process for coloring an article of magnesium or magnesium-base alloy which comprises forming an aluminum oxide-containing layer over a surface of said article and subsequently coloring said layer with an anodized aluminum-coloring dye is also disclosed.

REFERENCES:
patent: 2364964 (1944-12-01), Frasch
patent: 2723952 (1955-11-01), Evangelides
patent: 3395027 (1968-07-01), Klotz
patent: 3891517 (1975-06-01), Yanagada

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