Method of producing metal matrix composite (MMC) with uniform surface layers
US9186723B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 18, 2014 |
| Grant date | Nov 17, 2015 |
| Priority date | — |
| Expiry date | Jun 18, 2034 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2311/00
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A method of producing a Metal Matrix Composite (MMC) with uniform surface layers is disclosed. First, a low volume fraction compressible discontinuous ceramic fiber paper is set on the base of a mold cavity. Next, an array of reinforcement preform(s) (1×1, 2×2, 4×4, 2×8, etc) are set in the mold on top of the ceramic fiber paper. A top layer of ceramic fiber paper is next placed on the array of reinforcement preforms and the mold cover seals the mold. The reinforcement porous preform(s) are held to the center of the mold cavity when the sealed mold compresses the top and bottom layers of ceramic fiber paper. The ceramic fiber paper exerts an equal and opposite force on the reinforcement preform(s) within the closed mold centering the preform(s) within the mold cavity. The mold cavity is next infiltrated under pressure with molten metal allowing for metal to penetrate into any open porosity of the ceramic fiber paper, reinforcement preform(s), and areas within the mold cavity that contain open spaces. Subsequent to molten metal infiltration, the aluminum rich surface layers are equal thickness on both sides of the reinforcement preform(s).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.