Ferrous powder compositions containing a polymeric binder-lubricant blend
US5980603A · kind A · utility
10Cited by
6References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 18, 1998 |
| Grant date | Nov 9, 1999 |
| Priority date | — |
| Expiry date | May 18, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F1/26
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Complexable polymeric binder-lubricant blends are disclosed for production by powder metallurgy techniques of ferrous compositions with remarkably high green strength upon compaction, or soft magnetic ferrous powder/resin composites with improved processability and magnetic properties. An exemplary composition consists of a ferrous powder, a thermoset phenolic resin and poly(ethylene oxide), both polymers exhibiting, when intimately mixed, strong intermolecular acid-base interactions giving rise to an interpolymer complex which imparts a high strength to the resulting ferrous powder compact.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.