Probe pin material including Ag—Pd—Cu-based alloy
US11807925B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 7, 2022 |
| Grant date | Nov 7, 2023 |
| Priority date | — |
| Expiry date | Nov 7, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R3/00
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A probe pin material including a Ag—Pd—Cu-based alloy essentially including Ag, Pd and Cu, B as a first additive element, and at least any element of Zn, Bi and Sn, as a second additive element. A concentration of the first additive element is 0.1 mass % or more and 1.5 mass % or less, and a concentration of the second additive element is 0.1 mass % or more and 1.0 mass % or less. A Ag concentration, a Pd concentration and a Cu concentration in the Ag—Pd—Cu-based alloy are required as follows: a Ag concentration (SAg), a Pd concentration (SPd) and a Cu concentration (SCu) converted as given that a Ag—Pd—Cu ternary alloy is formed from only such three elements all fall within a predetermined range in a Ag—Pd—Cu ternary system phase diagram. The probe pin material is excellent in resistance value and hardness/wear resistance, and also is enhanced in bending resistance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.