Abstract

The kinetics of infiltration of Si and its alloys into porous carbon has been investigated theoretically using a modified Washburn model. The effect of alloy composition and temperature on infiltration has been quantified. The resulting characteristics depend on the type of alloy and the composition of the secondary metallic phase. Aluminum generally suppresses infiltration rate while the influence of Cu depends on composition. Infiltration is enhanced for low Cu concentration below a threshold value, and attenuated for higher concentration. Increasing the temperature enhances both the infiltration capacity and reaction rate.

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