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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한양대학교 세라믹공정연구센터 Journal of Ceramic Processing Research Journal of Ceramic Processing Research 제18권 제2호
- 발행연도
- 2017.2
- 수록면
- 122 - 126 (5page)
- DOI
- http://dx.doi.org/
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초록· 키워드
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As a kind of heat insulating material, alumina foam ceramics have many advantages such as low thermal conductivity, highthermostable performance, good wear resistance, high hardness and excellent resistance to chemical corrosion. In this paper,a high-alumina foam ceramic was prepared by the gel-foaming method using water as dispersing medium, aluminumdihydrogen phosphate as gel and alumina fiber as reinforcing component, and the effects of alumina fiber content on the slurryviscosity as well as the porosity, phase composition, microstructure and mechanical properties of the prepared ceramic werestudied. It was found that the viscosity of the slurry increased with the increase of fiber content. After sintering, there wereC-AlPO4, T-AlPO4 and α-Al2O3 phases in the prepared samples; with the increase of fiber content, the porosity increased firstand then decreased, whereas the compressive strength presented an opposite variation trend. In addition, the fracturetoughness was also improved owing to the bridging effect of alumina fibers, the crack deflection and the fiber pulling-outmechanism.
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