| abstract |
1,255,658. Al-coated C fibre. ROLLS ROYCE Ltd. Aug. 18, 1969 [Aug. 3, 1968], No. 37139/68. Heading C7F. Tri-isobutyl aluminium vapour is brought into contact with the surface of a carbon fibre whose temperature is sufficient to decompose the vapour to produce a metallic deposit. The Al i-Bu 3 may be mixed with a carrier gas, e.g. pre-heated Ar/isobutylene, and the process may be carried out batchwise or continuously, the C fibres being heated either by conduction from the coating furnace walls or by radiant heat; suitable apparatuses are described. A filament-wound artefact may be produced by simultaneously coating the filament with Al and winding on to a mandrel; a continuous Al matrix reinforced with C fibre is thus produced. |