Process for preparing self-supporting bodies and products made thereby
US4904446A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 13, 1989 |
| Grant date | Feb 27, 1990 |
| Priority date | — |
| Expiry date | Jan 13, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12007
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Self-supporting bodies are produced by reactive infiltration of a parent metal into a boron nitride material typically resulting in a body comprising a boron-containing compound, a nitrogen-containing compound and metal. The mass to be infiltrated may contain one or more inert fillers admixed with the boron nitride, to produce a composite by reactive infiltration, which composite comprises a matrix which embeds the filler material. The matrix, in a composite body containing filler material, comprises one or more metal, a boron-containing compound and a nitrogen-containing compound. The relative amounts of reactants and process conditions may be altered or controlled to yield a body containing varying volume percents of ceramic, metal and/or porosity. The mass to be infiltrated can be contained within a refractory vessel having a venting means included therein.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.