Method for forming a metal matrix composite body by an outside-in spontaneous infiltration process, and products produced thereby
US5267601A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 25, 1991 |
| Grant date | Dec 7, 1993 |
| Priority date | — |
| Expiry date | Nov 25, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C47/08
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The present invention relates to a novel method for forming a metal matrix composite body. Particularly, a permeable mass of filler material is formed into a preform, the preform having at least a portion thereof which contains a cavity. An infiltration enhancer and/or an infiltration enhancer precursor and/or an infiltrating atmosphere are also in communication with the preform, at least at some point during the process, which permits molten matrix metal to spontaneously infiltrate the preform when the preform is placed into molten matrix metal. An infiltrating atmosphere is provided in communication with the cavity in the preform for at least a portion of the process, and molten matrix metal is contacted with an exterior portion of the preform, such that molten matrix metal will spontaneously infiltrate the preform from an exterior surface thereof toward the cavity. The process can be performed in a continual manner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.