Effects of additives on densification, microstructure and properties of liquid-phase sintered silicon carbide
Source abstract
Abstract
Dense SiC ceramics were obtained by hot pressing of β-SiC powders using Al2O3-Y2O3 and La2O3-Y2O3 additive systems. The effect of the addition of an amount of ultrafine SiC to commercial silicon carbide powder was evaluated. Sintering behaviour and microstructure depended on type and amount of liquid phase, as densification proceeded via a classical solution-reprecipitation mechanism. A core/rim structure of SiC grains indicated that reprecipitation of a solid solution of SiC containing Al and O occurred on pure SiC nuclei. Grain boundary phase was constituted of crystalline YAG and amorphous silicates. Values of flexural strength up to ∼750 MPa at RT and up to ∼550 MPa at 1000 °C were measured. At 1300 °C a strong degradation of strength was attributed to softening of the amorphous portion of grain boundary phase. In highly dense materials toughness ranged from 2.95 to 3.17 MPa·m1/2 and hardness from 21 to 23 GPa.
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Research context
OpenAlex topics: Advanced ceramic materials synthesis · Advanced materials and composites · Aluminum Alloys Composites Properties
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References (40)
Show source-provided references
1. K. Motzfeld, in Proceedings of the International Conference on Engineering Ceramics '92, edited by M. Haviar (Reproprint, Bratislava, 1993) p. 7.
2. W. Dressler and R. Riedel, Int. J. Refractory Metals and Hard Materials 15 (1997) 13.10.1016/S0263-4368(96)00046-7 ↗
3. H.-J. Kleebe, J. Europ. Ceram Soc. 10 (1992) 151.10.1016/0955-2219(92)90028-C ↗
4. F. F. Lange, J. Mater. Sci. 10 (1975) 314.10.1007/BF00540356 ↗
5. F. K. Van Dijen and E. Mayer, J. Europ. Ceram Soc. 16 (1996) 413.10.1016/0955-2219(95)00129-8 ↗
6. L. K. Falk, ibid. 17 (1997) 983.10.1016/S0955-2219(96)00198-7 ↗
7. M. A. Mulla and V. K. Kristic, Ceram. Bull., Vol. 70, 3 (1991) 439.
8. S. K. Lee and C. H. Kim, J. Am. Ceram. Soc. 77(6) (1994) 1655.10.1111/j.1151-2916.1994.tb09771.x ↗
9. Y.-W. Kim, M. Mitomo, H. Emoto and J.-G. Lee, ibid. 81(12) (1988) 3136.10.1111/j.1151-2916.1998.tb02748.x ↗
10. S. K. Lee, Y. C. Kim and C. H. Kim, J. Mater. Sci. 29 (1994) 5321.10.1007/BF01171542 ↗
11. Y.-W. Kim, H. Tanaka, M. Mitomo and S. Otani, J. Cer. Soc. Japan, Int. Ed. 103 (1993) 260.
12. Y.-W. Kim, M. Mitomo and H. Hirotsuru, J. Am. Ceram. Soc. 80(1) (1997) 99.10.1111/j.1151-2916.1997.tb02796.x ↗
13. K. Lee, H. H. Kim, E. G. Lee and H. Kim, in “Key Enginering Materials,” Vols. 161-163 (Trans Tech Publ. Switzerland, 1999) p. 263.
14. M. Mitomo, ibid., p. 53.
15. G.-D. Zhan, M. Mitomo, H. Sato and Y.-W. Kim, ibid., p. 243.
16. S. Dutta, J. Am. Ceram. Soc. 68(10) (1985) C269.10.1111/j.1151-2916.1985.tb11527.x ↗
17. J. Hojo, K. Miyachi, Y. Okabe and A. Kato, ibid. 66 (1983) C114.10.1111/j.1151-2916.1983.tb10603.x ↗
18. E. Liden, E. Carlstrom, L. Eklund, B. Nyberg and R. Carlsson, ibid. 78(7) (1995) 1761.10.1111/j.1151-2916.1995.tb08886.x ↗
19. Y.-W. Kim, M. Mitomo and H. Hiritsuru, ibid. 78(11) (1995) 3145.10.1111/j.1151-2916.1995.tb09100.x ↗
20. M. J. Hoffmann and M. Nader, in Engineering Ceramics '96: Higher reliability Through Processing, edited by G. N. Babini et al. (Kluwer Academic Publisher, The Netherlands 1977) p. 133.
21. D.-H. Kim and C. H. Kim, J. Am. Ceram. Soc. 73(5) (1990) 1431.10.1111/j.1151-2916.1990.tb05219.x ↗
22. K. Y. Chia and S. K. Lau, Ceram. Eng. Sci. Proc. 12(9-10) (1991) 1845.10.1002/9780470313848.ch17 ↗
23. N. P. Padture, J. Am. Ceram. Soc. 77(2) (1994) 519.10.1111/j.1151-2916.1994.tb07024.x ↗
24. N. P. Padture and B. R. Lawn, ibid. 77(10) (1994) 2518.10.1111/j.1151-2916.1994.tb04637.x ↗
25. M. Keppler, H.-G. Reichter, J. M. Broadley, G. Thurn, I. Wiedmann and F. Aldinger, J. Europ. Ceram. Soc. 18 (1998) 521.10.1016/S0955-2219(97)00163-5 ↗
26. Y.-W. Kim, W. Kim and D.-H. Cho, J.Mat. Sci. Lett. 16 (1977) 1384.10.1023/A:1018544923812 ↗
27. D.-H. Cho, Y.-W. Ki Mand and W. Kim, J. Mater. Sci. 32 (1977) 4777.10.1023/A:1018635131661 ↗
28. C.-M. Wang and H. Emoto, J. Mater. Res. 12(12) (1997) 3266.10.1557/JMR.1997.0429 ↗
29. M. Mitomo, Y.-W. Kim and H. Hirotsuru, ibid. 11(7) (1966) 1601.10.1557/JMR.1996.0200 ↗
30. H. Ye, V. V. Pujar and N. P. Padture, Acta Mater. 47(2) (1999) 481.10.1016/S1359-6454(98)00371-1 ↗
31. L. S. Sigl and H.-J. Kleebe, J. Am.Ceram Soc. 76 (1993) 773.10.1111/j.1151-2916.1993.tb03677.x ↗
32. L. K. L. Falk, in Third Euro-Ceramics, Vol. 1, edited by P. Duran and J. F. Fernandez (Faenza Editrice Iberica, 1993) p. 889.
33. S. M. Mcmillan and R. J. Brook, in “Ceramic Processing Science and Technology, Ceramic Transaction Vol. 51,” edited by H. Hausner et al. (The Am. Ceram. Soc., Ohio, 1990) p. 187
34. G. R. Anstis, P. Chantikul, B. R. Lawn and D. B. Marshall, J. Am. Ceram Soc. 64 (1981) 533.10.1111/j.1151-2916.1981.tb10320.x ↗
35. E. M. Levin and H. F. Mc Murdie, edited by M. K. Raser (The American Ceramic Society, Inc. Columbus, Ohio, 1969) p. 165.
36. Idem., p. 167.
37. E. M. Levin and H. F. Mcmurdie, edited by M. K. Reser (The American Ceramic Society, Inc. Columbus, Ohio, 1975) p. 153.
38. W. D. Kingery, J. M. Wolbround and F. R. Charvat, J. Am. Ceram. Soc. 46 (1963) 391.10.1111/j.1151-2916.1963.tb11758.x ↗
39. Y. Murakami, “Stress Intensity Factors Handbook, Vol. 1,” (Pergamon Press, Oxford, 1987) p. 42.
40. A. Bellosi and G. N. Babini, in “NATO ASI Series, High Technology,Vol. 25, Engineering Ceramics '96,” (Kluwer Ac. Publ., Dordrecht, 1997) p. 197.