Prediction of Critical Pressure in the Preparation of Composites by Vacuum - Pressure Infiltration Process

Abstract:

The SiC_3D/Al composite with high SiC content were prepared by vacuum– pressure infiltration process, and the prediction model of infiltration pressure threshold involving capillary pressure and viscous resistance was established. The effects of model parameters on the critical infiltration pressure were analyzed. The results show that the main factors are the permeability coefficient of SiC performs and the temperature of molten aluminum alloy. Temperature affects the melt viscosity and the wetting angle between SiC and molten alloy. The ingiltration pressure threshold of the specific infiltration system had been calculated by this model, which is in agreement with experimental results.

• Periodical: Key Engineering Materials (Volumes 512-515)
• Pages: 427-430
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.512-515.427
• Online since: June 2012
• Authors: Ming Tao Huang, Yang Wei Wang, Fu Chi Wang, Ju Bin Gao
• Keywords: Porous Performs, SiC_3D/Al Composites, Vacuum Pressure Infiltration

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