Abstract
β-silicon nitride whiskers were aligned unidirectionally in silicon nitride sintered with 2 wt% Al2O3 and 6 wt% Y2O3. It was be densified by the Gas Pressure Sintering (GPS) method. Thermal conductivity of the sintered body with different amount of β- silicon nitride whiskers was measured by the direct contact method from 298 K to 373 K. This unidirectionally oriented β-silicon nitride whiskers grew into the large elongated grains, and improved also the thermal conductivity. The amount of β-silicon nitride whiskers changed the microstrcuture, which changed the thermal conductivity.
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References
T. Hirai, S. Hayashi and K. Niihara, Am. Ceram. Soc. Bull. 57 (1978) 1126.
M. Kuriyama, Y. Inomat, T. Kijima and Hasegawa, ibid. 57 (1978) 1119.
K. Tsukuma, M. Shimada and M. Koizumi, ibid. 60 (1981) 910.
K. Hayashi, S. Tsujimoto, T. Nishikawa and Y. Imamura, J. Ceram. Soc. Jpn. 94 (1986) 595.
K. Watari, Y. Seki and K. Ishizaki, ibid. 97 (1989) 56.
Y. Seki and K. Ishizaki Idem., ibid. 97 (1989) 174.
G. Ziegler and D. P. H. Hassrelman, J. Mater. Sci. 16 (1981) 495.
G. Ziegler, in “Progress in Nitrogen Ceramics,” edited by F. L. RILEY (Martinus Nijhoff Publishers, Boston, 1983) p. 565.
J. S. Haggerty and A. Lightfoot, Ceram. Eng. Sci. Proc. 16 (1995) 475.
N. Hirosaki, Y. Okamoto, M. Ando, F. Munakata and Y. Akimune, J. Am. Ceram. Soc. 79 (1996) 2878.
K. Hirao, W. Watari, M. E. Brito, M. Toriyama and S. Kanzaki, ibid. 79 (1996) 2485.
O. Abe, in the 1st International Symposium On the Science of Engineering Ceramics, 1991, edited by K. NIIHARA, p. 89.
K. Watari, K. Hirao, M. Toriyama and K. Ishizaki, ibid. 82 (1999) 777.
N. Hirosaki and A. Okada, ibid. 72 (1989) 2359.
S. W. Lee, D. S. Park, Y. H. Choa and K. Niihara, J. European Ceram. Soc. in contribution.
G. A. Slack and I. C. Huseby, J. Appl. Phys. 53 (1982) 6817.
G. A. Slack, R. A. Tanzilli, R. O. Pohl and J. W. Vandersande, J. Phys. Chem. Solids 48 (1987) 641.
A. V. Virkar, T. B. Jackson and R. A. Cutler, J. Am. Ceram. Soc. 72 (1989) 2031.
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Lee, S.W., Chae, H.B., Park, D.S. et al. Thermal conductivity of unidirectionally oriented Si3N4w/Si3N4 composites. Journal of Materials Science 35, 4487–4493 (2000). https://doi.org/10.1023/A:1004807516791
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DOI: https://doi.org/10.1023/A:1004807516791