Abstract
The effects of some polyvalent metal anions in magnesium anodizing were compared. Coated panels were exposed to salt spray to determine their corrosion resistance. Hardness and dielectric strength tests were also carried out. Coatings from chromate, stannate, vanadate, tungstate, and manganate baths were compared with those from a bath containing no polyvalent metal anion. Differences in corrosion resistance were noted, with vanadate baths producing the best results. Differences in color were noted also.
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