| 화학증착 탄화규소 휘스커에 의한 다공성 코디어라이트의 기공구조 개질 및 특성평가 |
| 김익환, 김준규, 이환섭, 최두진 |
| 연세대학교 신소재공학과 |
| 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 |
| Department of Advanced Material Science and Engineering, Yonsei University |
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| ABSTRACT |
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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. |
| Key words:
Silicon carbide, Whisker, Networking structure, Pore size |
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