NON-CHROMATE CORROSION INHIBITOR FORMULAS BASED ON HIGHLY CRYSTALLINE HYDROTALCITE ANALOGS

摘要

A mixture of Zinc Oxides or Hydroxides with Aluminum Hydroxides and Vanadium Oxide (V2O5) co-reacts in high temperature aqueous slurry to form highly crystalline forms of Hydrotalcite, containing the Decavanadate ion as a source of corrosion inhibition. The subject compositions, free of hexavalent chromium, are highly effective in providing blister- free corrosion prevention in typical coil and aerospace grade epoxy primer and color coat combinations.