STUDY ON THE DENSIFICATION OF ALN-TIB2 COMPOSITES BY HOT PRESSED SINTERING
DOI:
https://doi.org/10.32347/2412-9933.2021.48.173-176Ключові слова:
aluminum nitride, titanium boride, hot pressed sintering, densificationАнотація
The AlN-TiB2 composites were prepared by hot pressing sintering process and the effects of TiB2 content and sintering process on the densification of AlN-TiB2 composites were studied. The results showed that at 1900℃ for 1h, the relative density reached more than 98.6% and the TiB2 content had no effect on densification of the composites. The phase composition and microstructure of the composites were also studied. Two-phase BN and TiN are newly formed in the sintering process of AlN-TiB2 multiphase material, so the multiphase material is composed of four phases, the primary crystal phase is AlN and TiB2, and the secondary crystal phase is BN and TiN. With the increase of sintering temperature and the extension of holding time, the density of AlN-TiB2 multiphase materials gradually increases. The optimum sintering temperature and holding time were 1900℃ and 1h respectively. The addition of TiB2 does not affect the sintering of multiphase materials.The multiphase materials have achieved high density.
Посилання
Tummala, R R. (1991). Ceramic and glass-ceramic pack-aging in the 1900 s. [J]. J Am Ceram Soc, 74 (5), 895–897.
Watari, K., Ishiaki, K., Tsuchiya, F. (1993). Phonon scattering and thermal conduction mechanisms of sintered aluminum nitride ceramics. [J]. J Mater Sci, 28(8), 3709–3712.
Hengde, L., & Jimei, X. (1990). Material surface and interface [M]. BeiJing, 105.
Mikijelj, B, David, K A, Hutcheon, R. (2003). AlN-based lossy ceramics for high average power microwave devices performance-property correlation. [J]. Journal of the European Ceramic Society, 23 (14), 2705.
David, K. B. (2002). AlN-based lossy ceramics for high power applications. [J]. IEEE International Vacuum Electronics Conference, California, USA, (2), 32–33.
Li, X., Qiu, T., Wu, H., Shen, C. (2005). Study on densification behavior and microwave attenuation characteristic sin AlN/SiC composites. [J]. Material Science Forum, 475–479, 1291–1294.
Khan, A. A., Labbe, J. C. (1996). Aluminum nitride-molybdenum ceramic matrix composites: characterization of ceramics-metal interface. [J]. Journal of the European ceramic Society, (16), 739.
Khan, A. A., Labbe, J. C. (1997). Aluminum nitride-molybdenum ceramic matrix composites: influence of molybdenum addition on electrical, mechanical and thermal properties. [J]. Journal of the European ceramic Society, 17, 1885.
Khan, A. A., Labbe, J. C. (1997). Aluminum nitride-molybdenum ceramic matrix composites possessing high thermal shock resistance. [J]. Materials Science and Engineering, A (230), 33.
Slack, G. A., Tanzilli, R. A., Pohl, R. O., et al. (1987). The intrinsic thermal conductivity of AlN. [J]. J Phys Chem Solids, 48, 641.
Watari, K, Ishiaki, K, Tsuchiya, F. (1993). Phonon scattering and thermal conduction mechanisms of sintered aluminum nitride ceramics. [J]. J Mater Sci, 28, 3709.
David, K. B. (2002). AlN-based lossy ceramics for high power applications. [J]. IEEE International Vacuum Electronics Conference, California, USA, 2, 32–33.
##submission.downloads##
Опубліковано
Як цитувати
Номер
Розділ
Ліцензія
Авторське право (c) 2021 Ming Li
Ця робота ліцензується відповідно до Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
