化学修飾ポリカルボシランを用いた高信頼性SiCセラミックスの作製

概要

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Chemically modified polycarbosilane containing organofluoric groups, PCOCF, was synthesized and used as a compaction binder for SiC ceramics. The powder fluidity and the powder packing property were evahated by measurine angle of repose, tap density, green density and pore size distribution of both the binder coated powders and the compacts. The PCOCF coated SiC powder showed improved fluidity and packing property, owing to the organofluoric side chains of PCOCF. Thus, the PCOCF coating was found to be the most effective among other binders to Iubricate the SiC particles, which results in a higher compaction under the same loading conditions. The compact of PCOCF coated SiC powder contans only homogeneously dispersed small pores, and therefore, the mechanical strength of the sintered body can be improved, the scatter in bending strength values being also significantly reduced due to the PCOCF coating.
社団法人日本セラミックス協会の論文
1999-11-01