Procedures for coating a metal substrate coated substrates and related

A process for coating a sustrUn process for coating a metal substrate comprising: (a) metallic contactoato, comprising: (a) contacting at least a portion of the metal substrate with at least a portion the metal substrate with a composition quecomprende pretreatment: (i) uncomposicion of quecomprende pretreatment: (i) a source of a group IIIB metal and / or a metaa source of a group IIIB metal and / or a metal of group IVB, and (ii) a source of copper; cl and IVB group, and (ii) a source of copper; and then (b) contacting at least one parontinuacion (b) contacting at least a portion of the metal substrate with a composition cte metal substrate with a composition comprising (i) a resin film forming, omprende ( i) a resin film forming, and (ii) a source of yttrium. and (ii) a source of yttrium.