Densification of a SiC-matrix by electrophoretic deposition and polymer infiltration and pyrolysis process

Fabrication of SiCf/SiC composites by alternating current electrophoretic deposition (AC–EPD) and hot pressing

“…Because the fabrication of high density SiC f /SiC is essential, a range of techniques, such as reaction sintering (RS), 16 chemical vapor infiltration (CVI), 17 polymer impregnation and pyrolysis (PIP), 18 nano-infiltrated transient eutectoid (NITE) 19 and electrophoretic deposition (EPD)-based technique, [20][21][22][23][24][25][26] have been used to infiltrate the matrix phase into the voids of a fiber-preform. Among these, EPD-based technique has several advantages, such as precise controllability of the composition, simple deposition apparatus, fast and even growth rate, and ease of depositing multilayer films with a controlled thickness.…”

“…[28][29][30] Recently, several successful attempts have been made to use EPD-based technique for the fabrication of SiC f /SiC. [20][21][22][23][24][25][26] Generally, organic solvents are used over water for EPD because of the evolution of hydrogen and/or oxygen bubbles from water electrolysis in DC electric fields. Although efforts have been made to produce uniform deposition in an aqueous system by minimizing the water electrolysis under DC electric fields, including the use of graphite electrode 31 and pulsed DC signal, 32 AC-EPD in an aqueous suspension has emerged recently as a successful processing technique for the deposition of a range of particles.…”

Dispersion behaviour of laser-synthesized silicon carbide nanopowders in ethanol for electrophoretic infiltration

“…In addition to conventional ceramic processes such as slip-casting and vacuum-infiltration, electrophoretic infiltration process (EPI) is increasingly studied as quickly and low cost process for the infiltration of the preform. [12][13][14][15][16][17] Recent study has reported the elaboration of a SiC matrix for C f /SiC composites by electrophoretic infiltration of SiC nanopowders and sintering aids followed by "spark plasma" sintering. A better damage tolerance response of the SiC matrix was observed and compared to CVI composite.…”

“…17,18 Authors have notably described two relevant and effective approaches: formation of an electrodeposited matrix made of silicon carbide and aluminium phosphate used as low-neutron activation sintering aids for subsequent natural sintering at relatively low temperature and elaboration of an electrodeposited SiC matrix followed by PIP process for densification. 14,19 Previous papers have shown that ElectroPhoretic Infiltration could be an effective way to control the fibre/matrix interface and the microstructure of SiC f /SiC composite. A SiC f /SiC composite with a pseudoductile fracture behaviour was thus elaborated.…”

Formation of Ti3SiC2 interphase coating on SiCf/SiC composite by electrophoretic deposition

“…Electrophoretic deposition (EPD) is a method using an electric field to deposit powders charged in a suspension into a preform; this method is employed to fabricate a composite by deposition of a matrix phase in a SiC f /SiC composite. 17,18 The EPD process can be used as a fast, simple, and efficient impregnation method regardless of the shape of the preform. To achieve a high-quality coating, many parameters related to the suspension and the process must be considered to achieve a high-quality coating.…”