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. 2024 Jun 21;17(13):3063.
doi: 10.3390/ma17133063.

Reactive Infiltration: Effects of Different Parameters

M Karla López-González  1 , Leidy Figueroa-Quintero  1 , David Villalgordo-Hernández  1 , Enrique V Ramos Fernández  1 , Javier Narciso  1   2
Affiliations

Reactive Infiltration: Effects of Different Parameters

M Karla López-González et al. Materials (Basel). .

Abstract

Currently, the production of complex SiC and SiC/SiC parts through reactive infiltration is one of the most widely used technologies, due to its versatility and cost-effectiveness compared to more conventional technologies such as Hot Isostatic Pressing (HIP). This technology, while widely adopted, still faces some debate regarding the mechanisms of infiltration. Questions persist about what determines how infiltration occurs and whether the process is governed by physics (flow dynamics) or chemistry (reactions at the triple line (LT: (contact line between the solid, liquid and gas phases)). The present work provides new strong/consistent proof that reactive infiltration is mainly controlled by chemical reaction.

Keywords: SiC; model; reactive infiltration.

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Conflict of interest statement

The authors declare no conflicts of interest.

Figures

Figure 1
Figure 1
Evolution of infiltration as a function of time. Red is the experimental, blue is obtained by Darcy’s equation, green is the modified Darcy’s equation for radius reduction by silicon carbide formation controlled by Si diffusion in SiC, and black by the SiC formation reaction. (a) 30 micron pores; (b) 10 micron pores. Insert in (a) is the same graph in logarithmic scale.
Figure 2
Figure 2
Micrographs of infiltrated capillary at different augments. Carbon is the black zone, the dark grey zone is the faceted SiC, the light brown is the “pocket” SiC, and the “white” zone is the not-reacted Si.
Figure 3
Figure 3
The setup engineered for the experiments of reactive infiltration.
Figure 4
Figure 4
Evolution of infiltrated volume at function of time.
See this image and copyright information in PMC

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