Process for synthesizing compounds from elemental powders and product
US5269830A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 26, 1990 |
| Grant date | Dec 14, 1993 |
| Priority date | — |
| Expiry date | Oct 26, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22F2201/20
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process for synthesizing intermetallic compounds from elemental powders. The elemental powders are initially combined in a ratio which approximates the stoichiometric composition of the intermetallic compound. The mixed powders are then formed into a compact which is heat treated at a controlled rate of heating such that an exothermic reaction between the elements is initiated. The heat treatment may be performed under controlled conditions ranging from a vacuum (pressureless sintering) to compression (hot pressing) to produce a desired densification of the intermetallic compound. In a preferred form of the invention, elemental powders of Fe and Al are combined to form aluminide compounds of Fe.sub.3 Al and FeAl.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.