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: A process for coating a steel strip, particularly ferritic stainless steel, with aluminum by hot quenching, in which the strip is preheated to a temperature less than 500.degree. C. in a first non-oxidizing atmosphere containing a quantity of oxygen less than 3%, the strip is then heated to a temperature less than 950.degree. C. in a second non-oxidizing atmosphere, the strip is then conveyed to an atmosphere (3, 4) which is non-reactive at the coating temperature, and, finally, the strip is quenched in a coating bath.