Tooling using thermostructural composite materials containing carbon for heat treatment and/or thermochemical treatment installations
US5996676A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 29, 1996 |
| Grant date | Dec 7, 1999 |
| Priority date | — |
| Expiry date | Oct 29, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/23
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An interposition layer (12) is formed on the outside surface of a part (10) made of thermostructural composite material containing carbon, and a metal case is formed by casting molten metal (22) around the part provided with its interposition layer. The interposition layer has closed porosity and it is proof against the metal of the case, such that shrinkage of the metal during cooling is absorbed by compacting or collapsing the porosity of the interposition layer, thereby preserving the integrity of the metal case, and the interposition layer constitutes a diffusion barrier preventing eutetics forming by contact between the metal of the case and the composite material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.