Patent ID: 7294211

Claim:
A solid corrosion-inhibiting conversion coating formed on a substrate metal, the conversion coating comprising cobalt, wherein the cobalt is trivalent cobalt, or tetravalent cobalt, or combinations thereof, and a valence stabilizer combined to form a cobalt/valence stabilizer complex within the solid corrosion-inhibiting conversion coating, and wherein the cobalt/valence stabilizer complex has a solubility in water of between about 5×10 −1 and about 1×10 −5 moles per liter of cobalt at about 25° C. and about 760 Torr, and wherein the valence stabilizer is selected from an organic valence stabilizer and an inorganic valence stabilizer, with the proviso that the inorganic valence stabilizer is not a vanadate or a tungstate, and the organic valence stabilizer is not a carboxylate.