Ultrafine fiber composites and method of making the same
US5096739A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 27, 1989 |
| Grant date | Mar 17, 1992 |
| Priority date | — |
| Expiry date | Nov 27, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2958
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A novel method is presented for synthesizing ultrafine fiber composite materials by laser induced coevaporation of a metallic target and a ceramic target in the presence of a heated tungsten filament, within a reducing environment. The species produced by rapid condensation from the resultant laser plume, along with the products derived from the chemical transport reactions involving the heated filament, form layers of composite material comprising a metal matrix and a random weave fiber network. In a preferred embodiment of the present invention, composite layers are formed on a nickel alloy substrate surface at a rate of about 1 micron per second. The matrix of the composite films is either aluminum or tungsten and the dispersed phase is amorphous silica fibers. The diameter of the fibers are between 25 and 120 nm depending on the laser beam materials interaction time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.