분진필터링 적용을 위한 SiC 섬유의 고온 열화분석
Degradation analysis of SiC fiber at elevated temperature for dust filtering applications
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초록
SiC 섬유는 1800oC까지 불활성과 공기 분위기에서 융해나 산화 문제 없이 사용할 수 있다. SiC 섬유는 분진 필터링 공정의 백필터로 상업화된 산업용 백 필터보다 훨씬 높은 온도인 500oC 이상의 온도에서 사용이 가능하다. 하지만 제강 산업과 화력발전소의 극한 환경에서 미세 분진과의 반응으로 인한 SiC 섬유의 열화에 대한 연구는 부족하다. 따라서 본실험에서는 SiC 섬유를 제강 분진, 화력발전소 분진과 500oC 이상의 고온에서 반응시켜 섬유 표면의 열화된 형상을 SEM 으로 관찰하고 섬유 표면 및 내부로의 산소 확산의 정도를 EDS로 분석하였다.
Abstract
SiC fiber can be used up to 1800 o C in both inert and air atmosphere without any problems such as melting and oxidation. SiC fibers can be applied to dust filtering processes as a bag filter at a high temperature above 700 o C, which is far beyond the temperature range of currently available industrial bag filter. However the studies for the degradation of SiC fibers were still lacked in the harsh environment of steel industries and thermoelectric power plants. In this study, SiC fibers were reacted with steel dust and thermal power plant dust at a high temperature of 500 o C or higher, and the degraded shape of the fiber surface was observed by SEM. Also the degree of oxygen diffusion on the surface and inside of SiC fiber was analyzed by EDS.
참고문헌 (14)
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