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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한양대학교 세라믹공정연구센터 Journal of Ceramic Processing Research Journal of Ceramic Processing Research 제17권 제8호
- 발행연도
- 2016.8
- 수록면
- 885 - 889 (5page)
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초록· 키워드
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The mechanical and thermal behaviors of porous silica-based ceramic cores for preformation of internal cooling passages ingas turbine blades were studied. The silica-based ceramic cores are composed of fused silica and zircon powders, and siliconcarbide powder (SiC) was added to improve the mechanical and thermal properties of the silica-based ceramic cores.
Cristobalite, which was formed by crystallization of amorphous silica on SiC surface, improved the flexural strength, bulkdensity and thermal conductivity of silica-based ceramic cores up to an addition of 10 wt% SiC. The SiC on the silica-basedceramic cores enhanced the thermal conductivity, because SiC has higher thermal conductivity compared with matrixmaterials of ceramic cores (fused silica and zircon). However, in case of 20 wt% SiC on ceramic core, the crystallization offused silica was accelerated due to SiC addition which acts as a seed of crystallization, therefore, many microcracks weregenerated by phase transformation (β→α) of cristobalite. As a result, the flexural strength, relative density and thermalconductivity of the ceramic core with 20 wt% SiC were reduced.
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참고문헌 (19)
참고문헌 신청
C. Huseby / 1979 / Am. Ceram. Soc. Bull 58:448~452
A. A. Wereszczak / 2002 / J. Mater. Sci 37:4235~4245
W. D. Kingery / 1960 / Introduction to Ceramics / John Wiley & Sons, U.S.A :583
L. C. Carwile / 1968 / Thermal Conductivity Proceedings of Seventh Conference / National Bureau of Standards (NBS) Special Publication :59~76
A. Kazemi / 2014 / Ceram. Int 40:1093~1098
A. A. Wereszczak / 2002 / J. Mater. Sci 37:4235~4245
W. D. Kingery / 1960 / Introduction to Ceramics / John Wiley & Sons, U.S.A :583
L. C. Carwile / 1968 / Thermal Conductivity Proceedings of Seventh Conference / National Bureau of Standards (NBS) Special Publication :59~76
A. Kazemi / 2014 / Ceram. Int 40:1093~1098
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