ZrB2-SiC 복합세라믹스의 미세구조와 열전도도에 미치는 SiC 크기와 첨가량의 영향
Effect of the Size and Amount of SiC on the Microstructures and Thermal Conductivities of ZrB2-SiC Composite Ceramics
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This paper reports the microstructures and thermal conductivities of ZrB2-SiC composite ceramics with size and amount of SiC. We fabricated sintered bodies of ZrB2-x vol.% SiC (x=10, 20, 30) with submicron and nanosized SiC densified by spark plasma sintering. Microstructure retained the initial powder size of especially SiC, except the agglomeration of nanosized SiC. For sintered bodies, thermal conductivities were examined. The observed thermal conductivity values are 40~60 W/mK, which is slightly lower than the reported values. The relation between microstructural parameter and thermal conductivity was also discussed.
Abstract
This paper reports the microstructures and thermal conductivities of ZrB2-SiC composite ceramics with size and amount of SiC. We fabricated sintered bodies of ZrB2-x vol.% SiC (x=10, 20, 30) with submicron and nanosized SiC densified by spark plasma sintering. Microstructure retained the initial powder size of especially SiC, except the agglomeration of nanosized SiC. For sintered bodies, thermal conductivities were examined. The observed thermal conductivity values are 40~60 W/mK, which is slightly lower than the reported values. The relation between microstructural parameter and thermal conductivity was also discussed.
참고문헌 (14)
- W. G. Fahrenholtz, , J. Am. Ceram. Soc., 90, pp.1347~ (2007)
- S. Q. Guo, , J. Euro. Ceram. Soc., 29, pp.995~ (2009)
- M. J. Gasch, "Handbook of Ceramic Composites", pp.197~ (2005), Kluwer Academic Publishers
- J. W. Zimmermann, , J. Am. Ceram. Soc., 91, pp.1405~ (2008)
- 권창섭, "ZrB_2-SiC 복합세라믹스의 미세구조와 기계적 물성에 미치는 소결 공정, 첨가제 효과", 한국분말야금학회지, 18(6), pp.562~567 (2011), 한국분말야금학회
- T. A. Jackson, , J. Mater. Sci., 39, pp.5905~ (2004)
- Y.-M. Chiang, "Physical ceramics", pp.474~ (1997), John Wiley & Sons, Inc
- D. He, , J. Phys. D-Appl. Phys., 37, pp.1848~ (2004)
- A. Bellosi, , Int. J. Appl. Ceram. Technol., 3, pp.32~ (2006)
- 강석중, "Sintering : densification, grain growth, and microstructure", pp.91~ (2005), Elsevier Butterworth-Heinemann
- S. Q. Guo, , J. Am. Ceram. Soc., 91, pp.2848~ (2008)
- F. L. Riley, "Structural ceramics-fundamentals and case studies", pp.186~ (2009), United Kingdom
- D. S. Smith, , J. Am. Ceram. Soc., 86, pp.105~ (2003)
- S. Baik, , J. Am. Ceram. Soc., 70, pp.527~ (1987)