|Title||Validation of Py-C chemical vapour deposition and infiltration process codes|
|Publication Type||Presentazione a Congresso|
|Year of Publication||2012|
|Authors||Burgio, F., Pilloni L., Labanti M., Scafè Matteo, Brentari A., Falconieri M., and Sangiorgi S.|
|Conference Name||ECCM 2012 - Composites at Venice, Proceedings of the 15th European Conference on Composite Materials|
|Keywords||C (programming language), Chemical vapor deposition, Chemical vapour deposition, Codes (symbols), Composite materials, Deposition, Fabric preforms, Hydrogen concentration, Infiltration process, Pyrolytic carbon, Residence time|
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 , 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.