Composite magnetic compacts and their forming methods
US4952331A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 16, 1987 |
| Grant date | Aug 28, 1990 |
| Priority date | — |
| Expiry date | Jan 16, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S428/90
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Composite magnetic compacts having good conductivity and excellent mechanical and magnetic properties and their forming methods. The composite magnetic compacts are basically made by forming mixtures consisting essentially of 1 to 50 percent by weight of a magnetic powder and the remaining percentage of a powder of superplastic Zn-22A1 alloy. A drop in the strength of the compacts that occurs when the mixing percentage of the magnetic powder increases is made up for by the impregration of plastic in the compacts or the simpler addition of a plastic power to the mixture of the powders of magnetic material and superplastic Zn-22A1 alloy. The forming methods of the composite magnetic compacts are carried out at different temperatures and under different conditions depending on the composition of the powder mixtures and so on.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.