Patent ID: 6566621
Filing Date: 2003-05-20
Classification: C04B,H01H,Y10T

Abstract:
A metal-ceramic composite comprising: a metal member having a tubular portion; and a cylindrical ceramic member, said metal-ceramic composite having a structure in which an end face of said tubular portion of said metal member is butt joined via a joint-metal layer to an end face of said cylindrical ceramic member in an edge sealed manner, said cylindrical ceramic member having a chamfer at one or both of an inner peripheral edge and an outer peripheral edge of the end face of said cylindrical ceramic member, whereinsaid joint-metal layer and said ceramic member contact each other at an annular region of average width W which extends circumferentially around said end face of said ceramic member, and wherein W and D have respective values measured in mm which satisfy: D&gE;30; and(1/60)Ã—D&lE;W&lE;(D/30)+3.1 where D is the outer diameter of said ceramic member.