Abstract: Conversion and passivation coatings and methods for treating metal surfaces such as steel and aluminum are disclosed. The coating compositions comprise a silane and a stabilizing agent. The methods herein comprise contacting the requisite metal surface with the coating composition.

Abstract: Conversion and passivation coatings and methods for metal surfaces such as steel and aluminum are disclosed. The coating compositions comprise an aqueous sol of cerium oxide and/or silica particles and a ureido silane compound. The methods of the invention comprise contacting the requisite metal surface with the coating composition.

Abstract: Chromate-free and metal phosphate free treatments and compositions for applying a conversion or passivation coating for metals, more particularly, steel, zinc coated steel, and aluminum surfaces. The methods of the invention comprise contacting the requisite metal surface with a treatment composition comprising a member or members comprising one or more Group IV B elements, fluoride, and phosphonic acid or phosphonate. Optionally, a silane may be added as a treatment component.

Abstract: A resin including a plurality of colloidal metal oxide particles; a silane, and a water dispersible polymer is disclosed. The silane includes an amino silane or uredosilane or both. A corrosion inhibitor is also disclosed. The corrosion inhibitor includes a conducting polymer or conducting oligomer with a conjugated structure that provides electric conductivity when doped; and an anion. The anion includes at least one anion selected from a group consisting of phosphomolybdate anion, permanganate anion, dichromate anion, ferrate anion, molybdate anion, salicylate anion, ethylenediamine tetraacetic anion, and amino acid anion. A coating composition including the resin and a corrosion inhibitor is disclosed. Also disclosed are methods of making the resin and the coating composition and method of treating a substrate with the coating composition.