PROCESS FOR METALLIZING CERAMIC SUBSTRATES

摘要

Ceramic articles or substrates are coated with a metal layer directly and securely bonded to the article or substrate, by a process comprising at least the following steps; (a) treating the substrate surface with a melt comprising one or more alkali metal cpds. ; (b) exposing the surface to a soln. having an acidity of at least 0.001 molar in hydrogen ions CPH up to 3); and (C) exposing the treated surface or selected parts of it to a metal plating bath soln. for depositing the metal. Pref. the substrate is completely coated with the metal deposit, and portions of deposit are removed in a later step thus forming the conductors of a printed circuit pattern.