Electric lamp and discharge devices – Electrode and shield structures – Composite electrodes or shields
Patent
1994-12-23
1998-12-08
O'Shea, Sandra L.
Electric lamp and discharge devices
Electrode and shield structures
Composite electrodes or shields
313633, 313491, H01J 114, H01J 1906
Patent
active
058474986
ABSTRACT:
Composite sintered electrodes with improved properties that make them suitable for use in a variety of lamp types, are provided which comprise a refractory metal and a substantial amount of a refractory emitter oxide, either single layer or multiple layer, the composites having been subjected to sintering at an elevated temperature effective to form a composite electrode having a density of at least 85%, preferably in the presence of a sintering activator, such as for example, Ni, or mixture thereof with a sintering aid such as, for example, Li.sub.2 O.
REFERENCES:
patent: 3244929 (1966-04-01), Kuhl
patent: 3798492 (1974-03-01), Menelly
patent: 4303848 (1981-12-01), Shimizu et al.
patent: 4748493 (1988-05-01), Geenen et al.
patent: 4783613 (1988-11-01), Yamamoto et al.
patent: 4822312 (1989-04-01), Passmore
patent: 4881009 (1989-11-01), Passmore
"Systematic Trends in the Chemically Activated Sintering of Tungsten" R.M. German, High Temperture Science 8, pp. 267-280.
"Control of Liquid-Phase-Enhanced Discontinuous Grain Growth in Barium Titanate" D. Hennings, J. Am. Ceram. Soc. 70(1) pp. 23-27.
Betrabet Hemant S.
McGee Susan
McGee Thomas F.
Mehrotra Vivek
Bartlett Ernestine C.
O'Shea Sandra L.
Patidar Jay M.
Philips Electronics North America Corporation
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