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US 4,894,584 AGranted
Electric lamp provided with a getter including palladium
AssigneeU.S. Philips Corporation
InventorsMaarten W. Steinmann, Wilhelmus A. A. A. Martens, Johannes J. G. S. A. Willems
Life of this patent
Estimating the term…
Abstract
The electric lamp has a getter capable of binding hydrogen, oxygen and stoichiometrically water at a comparatively low temperature. The getter comprises Pd as a first metal, chemically bound to a second metal from the group Zr and Y, the mol. % of the first metal in the getter lying between 0.4 and 15. The getter further comprises chemically bound oxygen, mole 0/mole second metal being 0.02-1.0. The particle size is .ltoreq.40 .mu.m.
Claims5
An electric lamp provided with
- a translucent lamp vessel sealed in a vacuum-tight manner;
- a light source arranged within the lamp vessel;
- current supply conductors extending from the light source through the wall of the lamp vessel to the exterior;
- and a getter within the lamp vessel comprising an intermetallic compound of a first metal with a second metal, characterized in that
- the getter contains Pd as a first metal, which metal is chemically bound to at least one second metal selected from the group consisting of Zr and Y, the ratio "mole first metal.times.100%/(mole first metal plus mole second metal)" lying in the range of 0.4-15%,
- and further contains chemically bound oxygen, the ratio "mole O/mole second metal" lying in the range of 0.02-1.0 and the getter having a particle size of mainly .ltoreq.40 .mu.m.
3 more elements
Dependencies are inferred from the claim text.