Palladium-based alloys

US11041228B2 · kind B2 · utility

Assignee

• Deringer-Ney, Inc. · US

Inventors

• Arthur S. Klein · Orange, US
• Edward F. Smith, III · Madison, US
• Srinath Viswanathan · Town of West Hartford, US

Key dates

• Filing date: Jul 11, 2019
• Grant date: Jun 22, 2021
• Expiry date: Jul 11, 2039

Classification

• Technology area (CPC G): Physics
• CPC primary: G01R1/06755
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

Palladium-based ternary or higher alloys include palladium at about 45-55 wt %, copper about 32-42 wt %, silver at about 8-15 wt %, rhenium at about 0-5 wt %, and optionally one or more modifying elements at up to 1.0 wt %. The alloys are age-hardenable, provide hardness in excess of 350 HK (Knoop, 100 g load), have electrical conductivities above 19.5% IACS (International Annealed Copper Standard), have an elevated temperature strength above 100 ksi at temperatures up to 480° F. (250° C.), and remain ductile (tensile elongation>2%) in their fully age-hardened condition. The alloys may be used in static and moveable electrical contact and probe applications.