Sintering process for prealloyed powders
US4707332A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 16, 1986 |
| Grant date | Nov 17, 1987 |
| Priority date | — |
| Expiry date | Oct 16, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C1/047
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process for manufacturing structural parts of complicated shape from intermetallic phases capable of sintering by means of special additives which serve at the same time as sintering assist and increase the ductility of the finished structural part. The process includes the steps of making by melting a pre-alloy of the intermetallic phase, comminuting the pre-alloy into fine powder and mixing the fine powder with one or more additives into a mass which can then be shaped and subsequently sintered at a temperature of 70 to 95% of the absolute melting point of the intermetallic phases into a structural part of increased ductility and a density greater than 95% of the theoretical density which might possibly be subjected to subsequent pressing operations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.