Process for fabricating low volume fraction metal matrix preforms
US6193915A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 3, 1999 |
| Grant date | Feb 27, 2001 |
| Priority date | — |
| Expiry date | Sep 3, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C1/1021
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process for making a low volume fraction preform for a metal matrix composite including the steps of: PA1 mixing a reinforcement with a binder and sacrificial fillers to provide a castable slurry; PA1 placing the slurry in a mold to provide a green cast preform; PA1 drying the green casting to remove any water and/or solvent; PA1 firing the green preform at a relatively low temperature to burn off the sacrificial fillers; PA1 firing the green preform at an elevated temperature to sinter the binder to bond the reinforcement together. The firing steps include particular combinations of temperature and time to ensure decomposition of the sacrificial filler and sintering without destruction or cracking of the green preform.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.