Process for applying a coating to a magnesium alloy product

Details Process for applying a coating to a magnesium alloy product Process for applying a coating to a magnesium alloy product

1995-03-30

1997-11-04

Silverberg, Sam

Metal treatment

Process of modifying or maintaining internal physical...

Processes of coating utilizing a reactive composition which...

148275, C23C 2222

Patent

active

056835221

ABSTRACT:
This invention relates to a non-electrolytic process for applying a paint adherent and corrosion resistant coating of magnesium phosphate and magnesium fluoride to a product formed from a magnesium alloy. The process includes immersing the magnesium alloy product in a solution having phosphate and fluoride ions. The process may further include controlling a pH level of the solution, providing the solution in which the magnesium alloy product is immersed with a concentration by weight of sodium bifluoride, and controlling the solution at a certain temperature, while the magnesium alloy product is immersed for a determined period of time.

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David Hawke and K. L. Albright, Hydro Magnesium, Southfield, Michigan, "A Phosphate-Permanganate Conversion Coating for Magnesium", Metal Finishing, Oct. 1995, pp. 35-38.

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