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Production of mullite‒TiC‒с-BN‒с-ZrO2-materials by the method of plasma-spark sintering and their properties
https://doi.org/10.17073/1683-4518-2019-2-23-29
Abstract
The effect of different с-BN and с-ZrO2 ratios on the phase composition, microstructure, relative density, open porosity, linear shrinkage, physicomechanical properties, and linear correlation of the elastic modulus and toughness of samples during plasma-spark sintering at pressing load 70 MPa in the range of 1200‒1600 °C is shown. The synthesized powders of TiC, c-BN and c-ZrO2, sintered at 1400 °C by the plasma-spark method, are characterized by intense crystallization of the phases. Sintered samples with different ratios of c-BN and c-ZrO2 show the intensive development of mullite and TiC. An increase in the c-BN / c-ZrO2 ratio promotes an active increase in c-BN and a less intensive increase in с-ZrO2 in the range of 1200‒1600 °C, and it causes the formation of a less uniform and densely sintered crystalline microstructure with a large number of pores at 1500 °C. This sample has lower values of physical and mechanical properties and a lower linear correlation of the modulus of elasticity and toughness in the range of 1200‒1600 °C and lower crack resistance at 1500 °C. Ill. 9. Ref. 13. Tab. 1.
About the Author
A. V. HmelovRussian Federation
References
1. Hotta, M. Densification and microstructure of Al2O3‒ cBN composites prepared spark plasma sintering / M. Hotta, T. Goto // J. Ceram. Soc. Jap. ― 2008. ― Vol. 116, № 6. ― P. 744‒748.
2. Chuan, S. Effect of alumina addition on the densification of boron carbide ceramics prepared by spark plasma sintering technique / S. Chuan, L. Yunkai, W. Yunfei, Z. Lingbo // Ceram. Inter. ― 2014. ― Vol. 40, № 8. ― P. 12723‒12728.
3. Хмелёв, А. В. Получение муллит‒TiC‒ZrC-материалов плазменно-искровым способом и их свойства / А. В. Хмелёв // Новые огнеупоры. ― 2016. ― № 12. ― С. 36‒41. Hmelov A. V. Preparation of mullite‒TiC‒ZrC ceramic materials by a plasma ‒ ARC method and their properties / A. V. Hmelov // Refrac. Indust. Ceram. ― 2017. ― Vol. 57, № 6. ― P. 645‒650.
4. Klimczyk, P. Al2O3‒cBN composites sintered by SPS and HPHT methods / P. Klimczyk, M. E. Cura, A. M. Vlaicu // J. Eur. Ceram. Soc. ― 2016. ― Vol. 36, № 7. ― P. 1783‒1789.
5. Fabrichnaya, O. Phase relations in the ZrO2‒Sm2O3‒ Y2O3‒Al2O3 system: experimental investigation and thermodynamic modelling / O. Fabrichnaya, G. Savinykh, T. Zienert, G. Schreiber // Inter. J. Mat. Res. ― 2012. ― Vol. 103, № 12. ― P. 1469‒1487.
6. Guo, S. High-strength zirconium diboride-based ceramic composites consolidated by low temperature hot pressing / S. Guo, Y. Kagawa // Sci. Techn. Adv. Mat. ― 2012. ― Vol. 13, № 4. ― P. 1‒6.
7. Zhang, X. Effect of Y2O3 on microstructure and mechanical properties of ZrB2‒SiC / X. Zhang, X. Li, J. Han, W. Han // J. All. Comp. ― 2008. ― Vol. 465, № 1/2. ― P. 506‒511.
8. Li, W. Hot-pressed ZrB2‒SiC‒YSZ composites with various yttria content: Microstructure and mechanical properties / W. Li, Z. Xinghong, H. Changqing, H. Jiecai // Mat. Sci. Eng. A. ― 2008. ― Vol. 494, № 1/2. ― P. 147‒152.
9. Wolfrum, A.-K. On the stability of c-BN reinforcing particles in ceramic matrix materials / A.-K. Wolfrum, B. Matthey, A. Michaelis, M. Herrmann // Materials. ― 2018. ― Vol. 255, № 11. ― P. 1‒17.
10. Chakravarty, D. Microstructure, mechanical properties and machining performance of spark plasma sintered Al2O3‒ZrO2‒TiCN nanocomposites / D. Chakravarty, G. Sundararajan // J. Eur. Ceram. Soc. ― 2013. ― Vol. 33, № 13/14. ― P. 2597‒2607.
11. Zhang, X. Microstructure and mechanical properties of ZrB2-based composites reinforced and toughened by zirconia / X. Zhang, W. Li, C. Hong, W. Han // Int. J. Appl. Ceram. Technol. ― 2008. ― Vol. 58, № 5. ― P. 499‒504.
12. Хмелёв, А. В. Получение муллит‒TiC‒TiN-материалов плазменно-искровым способом с высокой нагрузкой прессования и их свойства / А. В. Хмелёв // Новые огнеупоры. ― 2017. ― № 8. ― С. 22‒30. Hmelov, A. V. Preparation of mullite‒TiC‒TiN materials by a plasma spark method and their properties / A. V. Hmelov // Refract. Ind. Ceram. ― 2017. ― Vol. 58, № 4. ― P. 418‒425.
13. Hmelov, A. Synthesis of ceramic powders in the Al2O3‒ SiO2‒ZrO2 (Y2O3) system and production of materials / A. Hmelov // A doctoral thesis summary submitted to Riga Technical University of Riga. ― 2011. ― P. 1‒27.
Supplementary files
For citation: Hmelov A.V. Production of mullite‒TiC‒с-BN‒с-ZrO2-materials by the method of plasma-spark sintering and their properties. NOVYE OGNEUPORY (NEW REFRACTORIES). 2019;(2):23-29. https://doi.org/10.17073/1683-4518-2019-2-23-29
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