Abstract
Mathematical modeling for the preparation of C/SiC composites from methyl-trichlorosilane in a F-CVI (Forced-chemical vapor infiltration) reactor was studied. Changes of pressure, concentration and porosity with time were predicted by the modeling. Pressure in the preform decreased sharply along the direction of gas flow. Pore entrances were plugged at 130 min reaction time in the conditions of this research. As pore entrances became plugged, the pressure at the pore entrance increased rapidly. The time when the preform should be overturned in the middle of deposition process for a uniform deposition could be decided by observing the radius of pore entrance. At the gas outlet of the preform, MTS was depleted completely and the fraction of HCl, i.e., the undesirable byproduct, became 0.42.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
References
Bickerdike, R. J., Brown, A. R. G., Hughes, G. and Ranson, H., in the Proceedings of the Fifth Conference on Carbon, 1 (1992).
Birakayala, N. and Evans, E. A., “A Reduced Reaction Model for Carbon CVD/CVI Processes,”Carbon,40(5), 675 (2002).
Bird, R. B., Stewart, W. E. and Lightfoot, E. N., “Transport Phenomena,” 2nd ed., John Wiley & Sons, Inc., New York, 191 (2002).
Cho, M. S., Kim, J. W. and Chung, G. Y., “Manufacturing of Ceramic Composites Reinforced with Layered Woven Fabrics by CVI of SiC from Dichlorodimethylsilane,”Korean J. Chem. Eng.,13, 515 (1996).
Chung, G. Y., McCoy, B. J., Smith, J. M., Cagliostro, D. E. and Carswell, M., “Chemical Vapor Infiltration: Modeling Solid Matrix Deposition in Ceramic-Ceramic Composites”,Chem. Eng. Sci.,46(3), 723 (1991).
Chung, G. Y. and McCoy, B. J., “Modelling of CVI for Ceramic Composites Reinforced with Layered Woven Fabrics,”J. Am. Ceram. Soc.,74(4), 746 (1991).
Chung, G. Y., Cagliostro, D. E., McCoy, B. J. and Smith, J. M., “Rate of Chemical Vapor Deposition of SiC and Si on Single Layer Woven Fabrics,”NASA T.M., 10397 (1992).
Chung, G. Y., McCoy, B. J., Smith, J. M. and Cagliostro, D. E., “Chemical Vapor Infiltration: Modeling Solid Matrix Deposition for Ceramic Composites Reinforced with Layered Woven Fabrics,”Chem. Eng. Sci.,47(2), 311 (1992).
Chung, G. Y., McCoy, B. J., Smith, J. M. and Cagliostro, D. E., “Chemical Vapor Infiltration: Dispersed and Graded Depositions for Ceramic Composites,”AIChE J.,39(11), 1834 (1993).
Delhaes, P., “Chemical Vapor Deposition and Infiltration Processes of Carbon Materials,”Carbon,40(5), 641 (2002).
Jenkin, W. C.,U.S. Patent, 3,160, 517 (1964).
Jensen, K. F. and Melkote, R. R., “Chemical Vapor Infiltration of Short Fiber Preforms,” Extended Abstract presented at the 1989 AIChE Meeting, San Francisco, 54 (1989).
Jiang, K., Li, H. and Wang, M., “The Numerical Simulation of Thermal-Gradient CVI Process on Positive Pressure Condition,”Materials Letters,54, 419 (2002).
Jin, S., Wang, X. and Starr, T. L., “A Model for Front Evolution with a Non-local Growth Route,”J. Mater. Res.,14, 3829 (1999).
Jin, S., Wang, X., Starr, T. L. and Chen, X., “Robust Numerical Simulation of Porosity Evolution in Chemical Vapor Infiltration I: Two Space Dimension,”J. Computational Physics,162(2), 467 (2000).
Gupte, S. M. and Tsamopoulos, J. A., “Densification of Porous Material by Chemical Vapor Infiltration,”J. Electrochem. Soc.,136, 555 (1989).
Kim, J. W., Cho, M. S. and Chung, G. Y., “Manufacturing of Ceramic Composites Reinforced with Carbon Fibers through CVI,”Korean Chem. Eng. Res.,34, 443 (1996).
Lee, S. J., Kim, M. H., Kim, Y. T. and Chung, G. Y., “Studies on the Preparation of C/SiC Composites as a Catalyst Support by CVI in a Fluidized Bed Reactor,”Korean J. Chem. Eng.,19, 167 (2002).
Li, H. J., Jiang, K. Y. and Li, K. Z., “Optimizing Parameters of CVI Processes for Manufacturing Carbon-Carbon Composites by Genetic Algorithms,”Materials Letters,57, 2366 (2003).
Luo, R., “Fabrication of Carbon/Carbon Composites by an Electrified Preform Heating CVI Method,”Carbon,40(11), 1957 (2002).
Nannetti, C. A., Riccardi, B., Ortona, A., La Barbera, A., Scafe, E. and Vekinis, G., “Development of 2D and 3D Hi-Nicalon Fibers/SiC Matrix Composites Manufactured by a Combined CVI-PIP Route,”Nuclear Materials,307–311, 1196 (2002).
Park, J. Y., Kim, W J. and Hwang, H. S., “Studies on the densification ofCf/SiC composites using MTS,” The 1st year Technical Report, The Korea Nuclear Research Center (2001).
Rossignol, J. Y., Langlais, F. and Naslain, R., “A Tentative Modelization of Titanium Carbide CVI within the Pore Network of Two Dimensional Carbon-Carbon Composite Preforms,”Proc. Electrochem. Soc.,84(6), 596 (1984).
Starr, T. L., “Model for CVI of Short Fiber Preforms,”Ceram. Eng. Sci. Proc.,8(7), 951 (1987).
Tai, N. H. and Chou, T. W., “Analytical Modeling of Chemical Vapor Infiltration of Ceramic Composites,”J. Amer. Ceram. Soc.,72(3), 414 (1989).
Zhang, W. and Hüttinger, K. J., “Simulation Studies on CVI of Carbon,”Composites Science and Technology,62(15), 1947 (2002).
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Kim, H., Chung, GY., Koo, HH. et al. Effects of process parameters for the preparation of C/SiC composites in the F-Chemical vapor infiltration reactor. Korean J. Chem. Eng. 21, 929–934 (2004). https://doi.org/10.1007/BF02705573
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF02705573