Transient three-dimensional simulation of densification process of carbon fibre preforms via chemical vapour infiltration of carbon matrix from methane

摘要

Highlights?2D woven cloth and random distributed felt were infiltrated.?A novel pore structure evolution model was proposed.?Simulation couples multi-step reaction model with pore structure evolution model.?Transient 3D simulation of CVI process was successfully implemented.?Predicted results of bulk density agree well with experimental results.AbstractChemical vapour infiltration (CVI) is widely used for fabricating carbon fibre-reinforced carbon materials for aircraft brake disks. This study aims at developing a numerical simulation method for predicting densification of the material during the CVI. Based on the multi-step reaction and deposition models, including the hydrogen inhibition model of pyrocarbon growth, transient 3D simulations of the CVI using methane as a precursor of the pyrocarbon were carried ou