DIAMOND FIBERS BY A HOT-FILAMENT CVD PROCESS

Diamond fibres for structural applications were produced by hot filame nt chemical vapour deposition onto tungsten substrates. A relatively h igh deposition rate of 2.1 mu m h(-1) was obtained, with potential for further increases in the growth rate. Raman spectroscopy of the coati ngs revealed reasonable diamond quality, which was supported by the hi gh elastic modulus measured (880 GPa). Microtexture measurements were performed on the fibres and these revealed about 50% of the diamond gr owth in the [001] direction. (C) 1997 Elsevier Science S.A.