COMPOSITION FOR FORMING ADHESION TITAN CONTAINING COATING ON STEEL OR ALUMINIUM SURFACE AND METHOD OF ITS APPLICATION Russian patent published in 2017 - IPC C23C22/44 

FIELD: chemistry.

SUBSTANCE: composition is proposed for forming a protective titanium-containing coating on a steel or aluminium surface before coating, containing the following components: hexafluorotitanic acid 0.1-0.25%, nickel nitrate (in terms of metal) 0.002-0.016%, ammonium paramolybdate 0.01-0.04%, tartaric acid 0.02-0.04%, the rest is water. A method for forming a protective titanium-containing coating is also provided, comprising treating a steel or aluminium surface for 0.5-5.0 minutes with said composition at a pH of 4.3-5.0 and a temperature of 20-40°C of the composition, and subsequent drying at a temperature of 180-200°C for 5-15 minutes.

EFFECT: inventions make it possible to obtain protective titanium-containing coatings on a steel or aluminium surface that have high corrosion resistance and improve adhesion followed by a paint coating, and prevent contamination of the working solution with heavy metal ions.

2 cl, 1 tbl, 7 ex