Corning Incorporated
GLASS OR GLASS CERAMIC ARTICLES WITH COPPER-METALLIZED THROUGH HOLES AND PROCESSES FOR MAKING THE SAME

Abstract:

A process for heating a glass or glass ceramic article with copper-metallized through holes includes heating the article from a first temperature to a second temperature. The first temperature is greater than or equal to 200.degree. C. and less than or equal to 300.degree. C., and the second temperature is greater than or equal to 350.degree. C. and less than or equal to 450.degree. C. An average heating rate during the heating of the article from the first temperature to the second temperature is greater than 0.0.degree. C./min and less than 8.7.degree. C./min. An article includes a glass or glass ceramic substrate having at least one through hole penetrating the substrate in a thickness direction; and copper present in the at least one through hole. The article does not comprise radial cracks.