Multipurpose boron carbide-aluminum composite and its manufacture via the control of the microstructure
US4702770A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 26, 1985 |
| Grant date | Oct 27, 1987 |
| Priority date | — |
| Expiry date | Jul 26, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2933
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Low-density composites are produced consisting chiefly of boron carbide and aluminum, or aluminum alloy, and minor amounts of ceramic material. The method allows control of the rate of reaction between boron carbide and metal so that the final components of the composite, and hence the mechanical properties, are controlled. The invention includes modification of the carbon content of the boron carbide composition, dispersion of boron carbide and formation of a compact, infiltration of the compact by aluminum or aluminum alloy, and heat treatments. The invention produces low-density boron carbide-aluminum composites with a homogeneous microstructure possessing desired mechanical properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.