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J. Korean Ceram. Soc. > Volume 52(4); 2015 > Article
Journal of the Korean Ceramic Society 2015;52(4): 284.
doi: https://doi.org/10.4191/kcers.2015.52.4.284
Formation of a Carbon Interphase Layer on SiC Fibers Using Electrophoretic Deposition and Infiltration Methods
Pipit Fitriani, Amit Siddharth Sharma, Sungho Lee, Dang-Hyok Yoon
School of Materials Science and Engineering, Yeungnam University
This study examined carbon layer coating on silicon carbide (SiC) fibers by utilizing solid-state and wet chemistry routes to confer toughness to the fiber-reinforced ceramic matrix composites, as an alternative to the conventional pyrolytic carbon (PyC) interphase layer. Electrophoretic deposition (EPD) of carbon black nanoparticles using both AC and DC current sources, and the vacuum infiltration of phenolic resin followed by pyrolysis were tested. Because of the use of a liquid phase, the vacuum infiltration resulted in more uniform and denser carbon coating than the EPD routes with solid carbon black particles. Thereafter, vacuum infiltration with controlled variation in phenolic resin concentration, as well as the iterations of infiltration steps, was improvised to produce a homogeneous carbon coating having a thickness of several hundred nanometers on the SiC fiber. Conclusively, it was demonstrated that the carbon coating on the SiC fiber could be achieved using a simpler method than the conventional chemical vapor deposition technique.
Key words: Carbon, Silicon carbide, Composites, Electrophoretic deposition
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