Abstract: The invention has as an object a stainless steel sheet coated with a coating comprising, in the order starting from the surface of the said sheet: a barrier layer of metallic oxide or oxy-hydroxide MOx, or of metallic nitride or oxy-nitride NMx, having a thickness ranging between 5 and 1000 nm, a porous layer of titanium oxide TiOx having a thickness ranging between 5 and 1000 nm, the said TiOx layer having a voluminal porosity ranging between 10 and 50% and a mean pore size ranging between 0.5 and 100 nm and an upper layer of silicon oxide or oxy-hydroxide SiOx having a thickness ranging between 5 and 1000 nm. The invention also relates to the method for manufacture of this coated sheet.

Abstract: The invention relates to a process for producing a stable solution containing Anatase titanium oxide intended to be deposited on a substrate in order to obtain a transparent photo-catalytic coating. Such a process includes the preparation of an initial stabilized peptized solution including a titanium precursor material, an organic solvent, an acid agent, the mixing of said initial solution with a large amount of water, the pH of the obtained intermediate solution being less then 3, subjecting said intermediate solution and its dispersion to a heat-treatment, the exchange of water by an organic solvent with low surface tension to obtain a final solution that is finally dispersed. The invention particularly allows to coat thermally sensitive and/or transparent substrates with photo-catalytic films of high optical quality.

Abstract: The invention relates to a process for producing a stable solution containing Anatase titanium oxide intended to be deposited on a substrate in order to obtain a transparent photo-catalytic coating. Such a process includes the preparation of an initial stabilized peptized solution including a titanium precursor material, an organic solvent, an acid agent, the mixing of said initial solution with a large amount of water, the pH of the obtained intermediate solution being less then 3, subjecting said intermediate solution and its dispersion to a heat-treatment, the exchange of water by an organic solvent with low surface tension to obtain a final solution that is finally dispersed. The invention particularly allows to coat thermally sensitive and/or transparent substrates with photo-catalytic films of high optical quality.