Abstract :
With the aim of determining the possibility
of producing SiC-based ceramic-matrix composites
using the electrophoretic deposition (EPD) technique,
the effect of the composition of SiC-based suspensions
on the deposition was studied. Ethanol suspensions of
two different grades of SiC powders, with and without
the addition of a sintering aid, were used for depositing
on steel electrodes or on SiC-fibres. The pH of the
suspensions, the solids loading and the particle size
were shown to have a strong influence on the deposition
process and on the properties of the fresh deposits.
The overall results demonstrate that by using appropriate
conditions for the EPD, a firm SiC-based deposit
can be collected at the SiC-fibres and after suitable
thermal treatment, a pore-free SiC-matrix, well
adhered to the SiC fibres, can be achieved.
