Validation of Py-C chemical vapour deposition and infiltration process codes

TitleValidation of Py-C chemical vapour deposition and infiltration process codes
Publication TypePresentazione a Congresso
Year of Publication2012
AuthorsBurgio, F., Pilloni L., Labanti M., Scafè Matteo, Brentari A., Falconieri M., and Sangiorgi S.
Conference NameECCM 2012 - Composites at Venice, Proceedings of the 15th European Conference on Composite Materials
Conference LocationVenice
KeywordsC (programming language), Chemical vapor deposition, Chemical vapour deposition, Codes (symbols), Composite materials, Deposition, Fabric preforms, Hydrogen concentration, Infiltration process, Pyrolytic carbon, Residence time
Abstract

The main purpose of the present study was to analyze the parameters controlling the Py-C CVD/CVI processes, conducted by a pilot size Isothermal/Isobaric CVI plant. In order to validate the previously developed deposition and infiltration codes [1], the experimental results and the theoretical models were taking into consideration. In particular, the effect of residence time and methane/hydrogen ratio (α) on the deposition rate and the microstructure of Py-C was investigated. Furthermore, 2D fabric preforms of carbon fibres were densified at 1200 °C by means of Py-C infiltration, varying the concentration of the gas mixture (CH4 and H2) and the pressure of the process.

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