In situ observation of the capillary infiltration of molten silicon in a SiC/SiC composite by X-ray radiography

Liquid metal infiltration of silicon based alloys into porous carbonaceous materials Part-III: Experimental verification of conversion products and infiltration depth by infiltration of Si-Zr alloy into mixed SiC/graphite preforms

“…SiSiC, also known as liquid silicon infiltration (LSI), involves infiltrating a porous carbonaceous preform by molten Si, which exothermically reacts with C to form SiC, resulting ideally in a dense composite. Over the past decades, Si-SiC ceramics have generated tremendous interest, which has led to the development of many variations of these materials, monolithic and particle/fibre reinforced CMCs, which can be obtained from different constituents and processes [3][4][5][6][7][8]. However, LSI has its disadvantages, the foremost being the presence of residual Si, rendering the composite unusable at temperatures near or above the melting point of Si.…”