Pore structure modification and characterization of porous cordierite with chemical vapor infiltration (CVI) SiC whisker

Ik Whan Kim, Jun Gyu Kim, Hwan Sup Lee, Doo Jin Choi

Research output: Contribution to journalArticle

Abstract

The main purpose of this study is enhancing the filtering efficiency, performance and durability of filter by growing SiC whiskers on cordierite honeycomb substrate. The experiment was performed by Chemical Vapor Infiltration (CVI) in order to control pore morphology of substrate. Increasing the mechanical strength of porous substrate is one of important issues. The formation of "networking structure" in the pore of porous substrate increased mechanical strength. The high pressure gas injection to the specimen showed that a little of whiskers were separated from substrate but additional film coating enhanced the stability of whisker at high pressure gas injection. Particle trap test was performed. More nano-particle was trapped by whisker growth at the pore of substrate. Therefore it is expected that the porous cordierite which deposited the SiC whisker will be the promising material for the application as filter trapping the nano-particles.

Original languageEnglish
Pages (from-to)132-137
Number of pages6
JournalJournal of the Korean Ceramic Society
Volume45
Issue number2
DOIs
Publication statusPublished - 2008 Feb

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites

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