Abstract
The isothermal and isobaric chemical vapour infiltration (CVI) process of pyrolytic carbon for producing carbon reinforced carbon fibres is investigated yielding a moving boundary problem to be solved. The growing surface of the substrate constitutes the free boundary due to steady deposition of solid pyrolytic carbon. A one-dimensional model for studying the infiltration of a single cylindrical pore is set up containing a simplified model of chemical kinetics as well as binary and Knudsen diffusion within the gas phase. This single pore model is integrated in a CVI reactor model additionally describing convection over a plane, porous substrate. Results of simulations reported here provide important insight in strategies to achieve a complete infiltration of a porous substrate.
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References
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Langhoff, T.-A., Schnack, E. (2001) Modelling chemical vapour infiltration of pyrocarbon as moving boundary problem. Preprint 2001–4, Institute of Solid Mechanics, Karlsruhe University.
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Langhoff, TA., Schnack, E. (2003). Modelling chemical vapour infiltration of pyrolytic carbon. In: Wendland, W., Efendiev, M. (eds) Analysis and Simulation of Multifield Problems. Lecture Notes in Applied and Computational Mechanics, vol 12. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-36527-3_15
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DOI: https://doi.org/10.1007/978-3-540-36527-3_15
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-05633-8
Online ISBN: 978-3-540-36527-3
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