Conductive, Lusterless Coatings for Light Metals
Final rept. 1 Mar-31 Aug 1972
BATTELLE COLUMBUS DIV OH
Pagination or Media Count:
A metallic conductive, lusterless plating system with improved corrosion durability developed for aluminum was the basis for a program on the improvements of the corrosion durability of magnesium. A composite of electroplates containing either a fused tin or a cobalt-nickel alloy was effective for inhibiting corrosion pits from penetrating through the coating into the magnesium substrates. The efficacy of the coating was not completely demonstrated because of inconsistent quality adhesion of copper strike on magnesium, however. A technique proposed for improving the quality of the copper strike includes a cyanide treatment after the application of a zinc displacement coating on magnesium, to improve the adhesion of the subsequent copper strike.
- Coatings, Colorants and Finishes