Quartz lamp envelope with molybdenum foil having oxidation-resis

Details Quartz lamp envelope with molybdenum foil having oxidation-resis Quartz lamp envelope with molybdenum foil having oxidation-resis

1990-10-29

1991-06-04

O'Shea, Sandra L.

Electric lamp and discharge devices

With gas or vapor

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

313332, 4271261, 445 35, 445 58, H01J 1718, H01J 6136, H01J 932

Patent

active

050217119

ABSTRACT:
A quartz lamp envelope includes a press seal, at least one molybdenum foil feedthrough extending through the press seal to the lamp interior, and an external electrical lead connected to the molybdenum foil. The molybdenum foil has an oxidation-inhibiting material, such as chromium, aluminum and combinations thereof, embedded in a surface layer thereof by ion implantation. The electrical lead has an oxidation-inhibiting coating, such as silicon carbide, silicon nitride and combinations thereof, formed by plasma-enhanced chemical vapor deposition. Alternatively, the electrical lead can have an oxidation-inhibiting material embedded in a surface layer thereof by ion implantation.

REFERENCES:
patent: 3105867 (1963-10-01), Meijer
patent: 3753026 (1973-08-01), Goorissen
patent: 4015165 (1977-03-01), Hardies
patent: 4312899 (1982-01-01), Lahmann
patent: 4756977 (1988-07-01), Haluska et al.

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