Cobalt-silicon based carbon composites (Co-Si/C) have established a noteworthy consideration in recent years as a replacement for conventional materials in the automotive and aerospace industries.To achieve the composite,a reactive melt infiltration process (RMI) is used,in which a melt impregnates a porous preform by capillary force.This method promises a high-volume fraction of reinforcement and can be steered in such a way to get the good “near-net” shaped components.A mathematical model is developed using reaction-formed Co-Si alloy/C composite as a prototype system for this process.The wetting behavior and contact angle are discussed;surface tension and viscosity are calculated by Wang\'s and Egry\'s equations,respectively.Pore radii of 5 pm and 10 μm are set as a reference on highly oriented pyrolytic graphite.The graphs are plotted using the model,to study some aspects of the infiltration dynamics.This highlights the possible connections among the various processes.In this attempt,the Co-Si (62.5 at.％ silicon) alloy\'s maximum infiltration at 5 μm and 10 μm radii are found as 0.05668 m at 125 s and 0.22674 m at 250 s,respectively.