PROCEDE POUR AMELIORER L'ADHERENCE DES METAUX A DES SUBSTRATS SOLIDES ET ARTICLES OBTENUS PAR CE PROCEDE

L'INVENTION SE RAPPORTE AUX STRUCTURES COMPOSITES.ELLE CONCERNE UN PROCEDE POUR AMELIORER L'ADHERENCE D'UNE SURFACE METALLIQUE A UN SUBSTRAT, SELON LEQUEL ON TRAITE LE SUBSTRAT PAR UN ALCOXYSILANE ORGANOFONCTIONNEL OU SON HYDROLYSAT PARTIEL, EVENTUELLEMENT EN MELANGE AVEC UN ALCOXYSILANE OU SON HYDROLYSATPARTIEL, ON SECHE LA SURFACE TRAITEE DU SUBSTRAT, ET ON DEPOSE UNE MINCE COUCHE CONTINUE DE METAL SUR LA SURFACE TRAITEE SECHE.UTILISATION NOTAMMENT DANS LA FABRICATION DE MIROIRS. A method of forming an adherent metal surface on a substrate comprises: (i) treating a solid substrate with at least one organofunctionalsilane, or a partial hydrolysate(s) thereof, having the general formula (I): or a mixture of such an organofunctional silane or the partial hydrolysate(s) thereof with a second silane, or a partial hydrolysate(s) thereof, which has the general formula (II): (RO)bSiR_4-b (II> in which formulae R is an alkyl radical of 1-4 carbon atoms, R% is a difunctional hydrocarbon radical having from 1-12 carbon atoms or a -CH2CH2CH2NHCH2CH2- radical, X is an -NH2 -SH, OH or Cl radical, R_ is a phenyl radical, or an alkyl radical of 1-4 carbon atoms, and a and b each have a value of 2 or 3, c has a value of 0 or 1 and a+c=3; (ii) drying the silane treated surface until the majority of volatile materials have been removed; and, thereafter, (iii) depositing a metal on the silane treated surface to form a thin continuous film or coating thereon.