Abstract
The effect of the following parameters on the infiltration characteristics of bilayer SiC p preforms by the alloy Al–10.77 wt.% Si–9.7 wt.% Mg was investigated and quantified: process temperature, infiltration time, SiC particle size, percentage porosity in the preform and preform layer height. The contribution of each of these parameters and their interactions to the height of infiltration are determined. In addition, an optimized process for enhanced infiltration is suggested and validated. The parameter that most significantly affects the height of infiltration is the interaction between porosity and the preform layer height. This interaction has a contribution of 42% on the variability of the infiltration height. It is followed by the infiltration temperature and the interaction between particle size and percentage porosity, which contributions are 25% and 23%, respectively. A verification test with the optimum parameters shows good agreement with the projected value of height of infiltration.
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