ELECTROPHORETIC DEPOSITION: FUNDAMENTALS AND APPLICATIONS means of EPD on top of CFC substrates Ceram. Trans. 51(1995) A modification of porous green bodies could be 17. 1. HECTOR and R. CLASEN, Ceram. Eng. Sci. Proc. 18(1997) achieved by electrophoretic impregnation, where nand 18 M. S. CHRONBERG and F. HANDLE, Interceram 27(1978) sized particles were deposited within the pore channels 1 of meso-porous green bodies. Thus, a homogeneous or 19. H. V. BOTH andJ. HAUBELT, Electrochem. Soc. Proc. 2002- graded densification can be achieved and composites 21(2002) with graded composition can be produced. The gradi 20.A.V. KERKAR.R. W. RICE andR. M. SPOTNItz. US ent can be tailored by adjusting the process parameters. 21. R. CLASEN. in Proceedings of the 2nd Int. Conf on Powder Processing Science. Berchtesgaden. 12-14. 10. 1988. edited by H. Hausner. G. L. Messing and S. Hirano(Deutsche Keramische Acknowledgement Gesellschaft, Koln, 1988)P 633 The authors gratefully acknowledge the financial sup- 22. K. MORITZ, R. THAUER andE. MULLER, cfi/Ber DKG 77 (2000)8 port of the German Science Foundation(DFG) 23. 1. M. AKIMOVICH, Inorg. Mater(Russia)12(1971)7 24. R. Clasen. in "Science, Technology and Applications of Colloidal Suspensions"(Amer. Ceram Soc., USA, 1995)P 169. 25. J. TABELLION and R. CLASEN. in"Innovative Processing and erences Synthesis of Ceramics, Glasses and Composites IV"(Amer. Ceram. 1.H. C. HAMAKER and e. J. W. VERWEY. Trans. Farad Soc.36(1940 26. J. TABELLION and R. CLASEN. in Proceedings of the 26th 2. M. BENJAMIN and A. B. OSBORN, ibid. 36(1940) 3. H. HOFFMANN. Ceram. Bull. 57(1978)6 Annual Conference on Composites, Advanced Ceramics, Materials and Structures, Cocoa Beach, Florida, USA, 2002, edited by H -T. ANE, J. B. TALBOT, B. G. KINNEY, E. SLUZKY and K. R. HESSE, J. Coll. Interf. Sci. 165(1994). 27. J. TABELLION and R. CLASEN, to be published in Proceed- ngs of the 27th Annual Conference on Composites, Advanced Ce- (2000)12 ramics, Materials tructures. Cocoa Beach. USA. 2003 6. D. MATTHEWS, A. KAY and M. GRATZEL, Aust. J. Chem. 28. S. HABER, J. Coll. Inter. Sci. 179(1996)2. 47(1994). 29. J. TABELLION, C. OETZEL andR. CLASEN, Electrochem. 7. T. NARISAWA, T. ARATO, N. KOGANEZAWA, M SHIBATA and Y. NONAKA, J. Ceram. Soc. Jpn. 103(1995) Soc.Pmoc.2002-21(2002) 30. A.R. BOCCACCINI, C. KAYA and H -G. KRUGER Chem.Ing. Tech. 73(2001)5 8.G.J.VERHOECKX and N. J. M. V. LETH, Electrochem. 31. K. MORITZ and E. MULLER, Key Engin. Mater: 206-213 Soc.Pmoc.,2002-21(2002) (2002 9. C -Y. CHEN, S.-Y. CHEN and D -M. LIU, Acta Mater. 47 32. K. SMEETS,J. TABELLION and R. CLASEN, ibid. 206- 213(2002) 10. F. HARBACH and H. NIENBURG, J Etrop. Cera. Soc. 18 33. K. SMEETS, J. TABELLION and R. CLASEN, ibid. 206- (1998) 213(2002) 11. F. BOUYER andA. FoISSY, J. Amer. Ceram. Soc. 82(1999)8 2. L. vANDEPERRE. O. V. D. BIEST. F. BOUYE ABELLION and R. CLaSEN, Innovative Processing and Synthesis of Ceramics, Glasses and Composites IV(Amer. Ceram. J. PERSELLO and A. FOISSY, J Europ Ceram Soc. 17(1997) Soc…UsA,2000p.19 3. J. LAUBERSHEIMER, H.-J. RITZHAUPT-KLEISSL J. HAUBELT and G. EMIG. ibid. 18(1998) 14. P. SARKAR and P. s. NICholSON /. Amer. Ceram Soc. 79 Received 5 May and accepted 17 August 2003ELECTROPHORETIC DEPOSITION: FUNDAMENTALS AND APPLICATIONS for the green bodies deposited at pH 7. Apart from bulk ceramics, protective SiC coatings were applied by means of EPD on top of CFC substrates. A modification of porous green bodies could be achieved by electrophoretic impregnation, where nano￾sized particles were deposited within the pore channels of meso-porous green bodies. Thus, a homogeneous or graded densification can be achieved and composites with graded composition can be produced. The gradi￾ent can be tailored by adjusting the process parameters. 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