Integrated Ag-SnO alloy electrical contact materials
US4243413A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 26, 1979 |
| Grant date | Jan 6, 1981 |
| Priority date | — |
| Expiry date | Feb 26, 1999 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H1/02376
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Ag-SnO alloy contact materials of such dimensions which are hard to achieve internal oxidation without producing depleted cores due to lack of tin oxides, are produced by metallurgically integrating pieces of said alloy material, said pieces being of such dimensions that they are easily internally oxidized without any depleted cores. Integration consists of congregating or assemblying said pieces by kneading under pressure and at a temperature higher than 700.degree. C. into a mass in which said pieces coalesce to each other without any distinctive silver interface thereamong, and through which tin oxides are uniformly dispersed substantially without any grain boundaries.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.