DOI: 10.1051/jp3:1992185
J. Phys. III France 2 (1992) 1413-1420
Chemical vapour deposition of very thin coatings on carbon fibre bundles
T. Stumm1, E. Fitzer1 and G. Wahl21 Institut für Chemische Technik, Universität Karlsruhe, 7500 Karlsruhe, Germany
2 Institut für Oberflächentechnik, Universität Braunschweig, 5300 Braunschweig, Germany
(Received 1st February, accepted 4 April 1992)
Abstract
The continuous deposition of thin coatings of refractory materials on carbon fibre rovings is considered as the impregnation
of a endless cylinder with slit-like pores in the direction parallel with the cylinder axis. From such a model, the limits
of process parameters for the simultaneous coating of all individual monofilaments are derived. In detail a correlation between
the deposition parameters and the resulting layer thickness is discussed for a deposition with high and low conversion respectively.
m) SiC and TiN layers on carbon monofilaments is described in systematic experiments using a steady state laboratory equipment.
The effect on the mechanical properties of the reinforcement fibers is shown.
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