Patent · US Active

Electrical contact material comprising a cobalt-nickel-iron alloy

US7578893B2 · kind B2 · utility

0Cited by

5References

9Claims

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Assignee

Vacuumschmelze GmbH & Co. KG · DE

Inventors

Hartwin Weber · Hanau, DE
Waldemar Doring · Hasselroth, DE
Matthias Schierling · Babenhausen, DE

Key dates

Filing date	Aug 18, 2005
Grant date	Aug 25, 2009
Priority date	—
Expiry date	Aug 7, 2026

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC22F1/10
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

A material for electrical contacts comprising a martensitic cobalt-nickel-iron alloy with a high strength, a high bendability and a high electrical conductivity, with a cobalt content of 12.0≦Co≦60.0% by weight, a nickel content of 10.0≦Ni≦36.0% by weight, remainder iron and an impurity content of less than 0.2 atomic percent, with a martensite temperature Ms of 75° C.≦Ms≦400° C. in the case of the martensitic variant and −50° C.≦Ms≦25° C. in the case of the variant which is naturally hard as a result of cold-forming.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.