UN METODO DE FORMAR UNA CAPA DE CU2O SOBRE CUERPOS QUE CON-SISTEN EN COBRE AL MENOS EN SU SUPERFICIE, PARA CERRAR HER- METICAMENTE EN VIDRIO.

摘要

1,211,619. Oxidizing copper surfaces. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. Sept.3, 1968 [Sept 6, 1967], No.41857/68. Heading C7U. A copper wire, e.g. a copper sheathed iron alloy wire which is to be sealed to glass, is provided with a cuprous oxide surface by heating in an oxygen-containing gas at a temperature above 750‹ C., e.g. 950‹ C., and then quenching in e.g. water. The wire may be heated by passing a current therethrough with one contact, e.g. a roller, in the cooling bath.