corrosion of a metal substrate treatment

The invention relates to a method of treating a metal substrate (1) with an anticorrosion coating (2) comprising at least the steps of: preparing a solution (3) having particles of a precursor of the oxide, dipping and subsequent removal of a surface (6) at least the metal substrate (1) into the prepared solution (3) and heat treatment of the surface (6) of the metal substrate (1) for generating oxide nanocrystals from the particles the precursor and form the anti-corrosion coating (2).