Abstract：Ti3SiC2 intermetallic compound combines some excellent performance of both metals and ceramics. It has a low density, high Young’s modulus, high strength and high thermal stability. It also exhibits excellent thermal and electrical conductivity, as well as good resistance to thermal shock. In addition, it is machinable with conventional tools. In order to fabricate porous Ti3SiC2 material, the slurry of Ti3SiC2 should been systematically investigated. The slurry without any dispersant can not keep stable in the range of pH 4- 11, determined by hydrolysis and eletroacoustic spectrum. With addition of 1 dwb% or 1. 5 dwb% polythylenimine (PEI) to the slurry of Ti3SiC2, the stabilization of slurry can be significantly improved. Using the stable Ti3SiC2 slurry, the porous Ti3SiC2 material was fabricated via "polymer sponge" method with polyurethane sponge as a template and followed by high temperature sintering.
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2015, Vol. 22 
