Method of infiltration forming a silicon carbide body with improved surface finish
US5205970A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 3, 1992 |
| Grant date | Apr 27, 1993 |
| Priority date | — |
| Expiry date | Apr 3, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B35/573
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method of infiltration forming silicon carbide bodies having an improved surface finish comprises, infiltrating a porous carbonaceous preform with molten infiltrant to form a silicon carbide body. The body is heated in an inert atmosphere or vacuum to a temperature where the infiltrant is molten while the body is positioned in contact with an infiltrant wicking means. Preferably, the wicking means has infiltrant wicking capillaries at least as large as the infiltrant wicking capillaries in the body. Capillary force draws excess infiltrant on the surface of the body from the surface leaving the reaction formed silicon carbide body with a surface substantially free of excess infiltrant droplets.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.