2005
DOI: 10.1016/j.jmatprotec.2004.07.064
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Modeling of isobaric–isothermal chemical vapor infiltration: effects of reactor control parameters on a densification

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Cited by 34 publications
(23 citation statements)
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References 26 publications
(31 reference statements)
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“…Low pressures are also common in CVI, since it is a convenient way to reduce the Thiele modulus ; accordingly, the Knudsen number is usually not negligible. A large amount of modelling efforts have been made (Starr and Smith, 1990;Ofori and Sotirchos, 1996a;Reuge and Vignoles, 2005;Vignoles, 2006), featuring or not Knudsen transport, but few has been said about thermal transpiration in these works.…”
Section: Latinmentioning
confidence: 99%
“…Low pressures are also common in CVI, since it is a convenient way to reduce the Thiele modulus ; accordingly, the Knudsen number is usually not negligible. A large amount of modelling efforts have been made (Starr and Smith, 1990;Ofori and Sotirchos, 1996a;Reuge and Vignoles, 2005;Vignoles, 2006), featuring or not Knudsen transport, but few has been said about thermal transpiration in these works.…”
Section: Latinmentioning
confidence: 99%
“…CVI is a very slow and thus expensive technique; consequently, there is a huge need in process optimisation based on detailed mathematical modelling and precise and efficient numerical simulations. Many different variants of CVI exist: isothermal (Reuge and Vignoles, 2005;Sotirchos, 1991;Zhang and Hüttinger, 2001;Jin and Wang, 2000, 2003McAllister and Wolf, 1991;Chung et al, 1991), thermal gradient CVI (Tago et al, 2001) forced flow CVI (Probst et al, 1999;Roman et al, 1995;microwave heating, Morell et al, 1993;Midha and Economou, 1998), etc. In this work we concentrate on the isothermal isobaric CVI of pyrolytic carbon since experimental data are available for this process.…”
Section: Introductionmentioning
confidence: 99%
“…The processes in the gas phase are often assumed steady-state (Middleman, 1989;Reuge and Vignoles, 2005;Zhang and Hüttinger, 2001;McAllister and Wolf, 1991;Chung et al, 1991;Tago et al, 2001;Hou et al, 1999) which is critical since the temporal evolution of the geometry due to deposition influences the transport mechanisms within this phase. At a first glance, the values of the so-called condensation ratio (the ratio of the density and the mass of the solid product and the concentration of the gas-phase species) being superior to 10 4 might seem to support the assumption of a steady-gas phase by many authors.…”
Section: Introductionmentioning
confidence: 99%
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