Joined body and high pressure discharge lamp

Details Joined body and high pressure discharge lamp Joined body and high pressure discharge lamp

2005-02-01

2005-02-01

Williams, Joseph (Department: 2879)

Electric lamp and discharge devices

With gas or vapor

Having electrode lead-in or electrode support sealed to...

62

Reexamination Certificate

active

06850009

ABSTRACT:
A high pressure discharge lamp including a ceramic discharge tube defining an inner space and having an opening formed within an end portion thereof, an electrode system provided within the inner space, a sealing member including a ceramic or a cermet with a through hole formed therein, at least a part of the sealing member being fixed within the opening of the ceramic discharge tube, and a metal member. A joining portion is interposed between the metal and sealing members, and includes a main phase contacting the metal member and an intermediate ceramic layer contacting the sealing member and existing between the sealing member and the main phase. The main phase includes a porous bone structure with open pores, is made of a sintered product of metal powder, and includes a ceramic phase impregnated into the open pores thereof.

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Patent Abstracts of Japan, vol. 2000, No. 20, Jul. 10, 2001 (JP 2001 076678).

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