Aluminum-carbon fiber composites
Abstract
Abstract 1,185,349. Composite metal articles. UNION CARBIDE CORP. 8 Nov., 1967 [21 Feb., 1967], No. 50695/67. Heading B3F. [Also in Division C7] A composite metal article is made by providing a tantalum covering 3 to carbon fibres 2 and filling the voids between the fibres with an aluminium matrix 4. The tantalum covering 3 facilitates the wetting of the fibres by the molten metal. The article is produced by placing the fibres 2 in a cylinder having a number of holes in its sides, heating them in a partial vacuum, submerging the fibres and cylinder in molten aluminium whilst in the partial vacuum and then pressurizing the molten metal to force it into the voids. The fibres may be in yarn or mono-filament form or in fabric or textile form and the carbon may be in a graphitic or non- graphitic form. The tantalum is formed on the carbon fibres by electro-deposition from a fused salt bath, thermal decomposition of the appropriate metal halide, or by sputtering.
Inventors
- 👤 Raymond V Sara
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-20 | 1973-04-21 | 1973-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-20 | 1977-04-21 | 1977-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-20 | 1981-04-21 | 1981-10-21 | $7700.00 | Window Closed / Lapsed |