Molybdenum foils with yttrium oxide and recrystallization grains

Details Molybdenum foils with yttrium oxide and recrystallization grains Molybdenum foils with yttrium oxide and recrystallization grains

1998-08-19

1999-10-05

Patel, Nimeshkumar D.

Electric lamp and discharge devices

With gas or vapor

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

31331807, 445 27, H01J 1718

Patent

active

059629762

ABSTRACT:
A metallic halide lamp has an envelope of silica glass defining a discharge chamber with a pair of pinch seals extending in opposite directions therefrom. A pair of tungsten electrode stems are partly buried in the respective seals and electrically connected to a pair of molybdenum lead wires via a pair of molybdenum foils which are wholly embedded in the pinch seals. The molybdenum foils have a recrystallization grain size of not more than about 50 .mu.m.

REFERENCES:
patent: 4254300 (1981-03-01), Thompson-Russell
patent: 4419602 (1983-12-01), Mitamura et al.
patent: 5277639 (1994-01-01), Nagata et al.
patent: 5286227 (1994-02-01), Numajiri et al.
patent: 5426343 (1995-06-01), Rhodes et al.
patent: 5542867 (1996-08-01), Hishinuma et al.
patent: 5606141 (1997-02-01), Leichtfried

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