Electrophoretic Deposition of Green Parts for LPS SiC-Based Ceramics
Electrophoretic deposition of silicon carbide in ethanol suspensions was studied with the aim to fabricate liquid-phase sintered (LPS) SiC-based ceramics densified at temperatures below 1500°C. The effect of suspensions composition (solids content, pH, sintering additives) on the deposition rate and the properties of the deposits was analysed. The consistency of deposits and their solids loading was found to be significantly dependent on composition of the starting suspension: the highest solids loading (54.5 vol. %) for pure SiC was obtained with the addition of citric acid, while for the suspension containing aluminum phosphate the deposition was more successful from alkaline suspensions.
A.R. Boccaccini, O. Van der Biest and R. Clasen
S. Novak et al., "Electrophoretic Deposition of Green Parts for LPS SiC-Based Ceramics", Key Engineering Materials, Vol. 314, pp. 45-50, 2006