Comparison of immersion and infusion techniques for ceramic powder infiltration into fibre preforms

This project demonstrates the feasibility of both immersion and infusion techniques as pre-processing methods for CMC production.

In this study, we compared the infusion and immersion techniques by infiltrating silicon nitride (Si3N4) and silicon carbide (SiC) particles into 3mm thick carbon preform substrates. We evaluated the infiltration efficiency of both methods based on the weight gain of the substrates and penetration depth of the particles.

While this project demonstrated the capability of both infusion and immersion techniques to infiltrate the interbundle regions of the fibre preform, it also highlighted the challenges in infiltrating fibre-rich regions, particularly when using woven preforms.

Authored by Can Akaoglu, the case study presents work undertaken at The AMRICC Centre alongside MICG partner Lucideon and was supported and partly funded by UK Research and Innovation through the Strength in Places Fund Programme.

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