YOUNGS MODULUS OF DIAMOND-COATED FIBERS AND WIRES

Diamond-coated fibres and wires were produced by hot filament chemical vapour deposition (HFCVD) of diamond on a variety of core materials i ncluding tungsten (W) and silicon carbide (SIG). Fibres with a diamond volume fraction exceeding 95% have been produced. Three different met hods of measuring the fibre Young's modulus (a resonance method, a ben d test and a tensile test) are presented, together with recent results . Possible applications for such fibres include reinforcements in meta l matrix composites (MMCs).