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US 4,905,074 AGranted
Interdiffusion resistant Fe-Ni alloys having improved glass sealing property
AssigneeOlin Corporation
InventorsChung-Yao Chao, John F. Breedis
Life of this patent
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Abstract
The present invention relates to an iron-nickel alloy containing from about 30% to about 60% nickel, from 0.001% to about 0.15% nitrogen, at least one element selected from the group consisting of from about 1% to about 10% molybdenum and from about 0.001% to about 2% aluminum and the balance essentially iron. The alloys demonstrate improved resistance to intermediate compound formation, improved glass to metal sealing properties, and improved wirebonding performance. The alloys of the present invention have particular utility as a lead frame material for semiconductor packages.
Claims13
A structure having:
- a component formed from a single phase alloy consisting essentially of from about 30% to about 60% nickel, from about 0.001% to about 0.15% nitrogen, at least one element selected from the group of from about 1% to about 10% molybdenum and from about 0.001% to about 2% aluminum, and the balance essentially iron.
Dependencies are inferred from the claim text.