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The mechanism of the inhibition of liquid Si infiltration (LSI) into a two-dimensional carbon-carbon composite (2D-C/C) by the addition of Al to the Si slurry pre-coating was investigated. It was shown by means of a vapor treatment experiment designed intentionally that the surface composition of the inner pores beneath the Si slurry pre-coating before the occurrence of LSI was pure carbon and SiC,...
Two-dimensional carbon-carbon composites (2D-C/C) applied with a pure Si pre-coating or a Si-6 wt.%Al pre-coating by dipping slurry method were heated above Si melting point to perform liquid Si infiltration. For pure Si slurry pre-coating, liquid Si excessively infiltrated into the C/C composite and many cracks were formed inside resulting in serious degradation of the flexural strength of the C/C...
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