公开(公告)号：US3611523A

公开(公告)日：1971-10-12

申请号：US3611523D

申请日：1969-05-21

Applicant: PHILIPS CORP

Inventor： DULK ERNST SIGMUND DEN

IPC: H01J19/30 ,  H01J9/00

CPC classification number: H01J19/30 ,  H01J2893/0019

Abstract: A METHOD OF MANUFACTURING AN ELECTRIC DISCHARGE TUBE BY FIRST COATING NON-EMITTING ELECTRODES SUCH AS AN ANODE WITH A LAYER OF NICKEL AND THEN A LAYER OF GOLD, AND THEN HEATING THE ELECTRODE DURING PUMPING TO A DEGASSING TEMPERATURE ABOUT 780*C. THE EMMISSION-SUPPRESSING CHARACTERISTICS OF THE NON-EMITTING ELECTRODES ARE MAINTAINED EVEN THOUGH THE GOLD DISSOLVES IN THE NICKEL.