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Self-propagating high-temperature synthesis of ZrB2-B4C composites with the dispersed phase as hollow shells
- Authors: Shcherbakov V.A.1, Gryadunov A.N.1, Alymov M.I.1
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Affiliations:
- Merzhanov Institute of Structural Macrokinetics and Materials Science
- Issue: Vol 485, No 2 (2019)
- Pages: 190-193
- Section: Physical chemistry
- URL: https://journals.eco-vector.com/0869-5652/article/view/12844
- DOI: https://doi.org/10.31857/S0869-56524852190-193
- ID: 12844
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Abstract
The formation of the microstructure of ZrB2-B4C ceramic composites produced by SHS pressing has been studied. It has been shown that the exothermic interaction in a mixture of Zr, B, and C powders gives an equilibrium SHS product containing ZrB2 as a dispersed phase and B4C – as a ceramic binder. The effect of the ceramic binder (B4C) content on the formation of the microstructure of SHS composites has been studied. It is shown, at content of B4C 10-20 wt% homogeneous SHS composites were formed consisting monolithic the ZrB2 particles with a size of 10-12 pm, and at content of B4C 20-40 wt% – hollow shells consisting of the ZrB2 particles.
About the authors
V. A. Shcherbakov
Merzhanov Institute of Structural Macrokinetics and Materials Science
Author for correspondence.
Email: vladimir@ism.ac.ru
Russian Federation, Chernogolovka
A. N. Gryadunov
Merzhanov Institute of Structural Macrokinetics and Materials Science
Email: vladimir@ism.ac.ru
Russian Federation, Chernogolovka
M. I. Alymov
Merzhanov Institute of Structural Macrokinetics and Materials Science
Email: vladimir@ism.ac.ru
corresponding member of the RAS
Russian Federation, ChernogolovkaReferences
- Neuman E. W., Hilmas G. E., Fahrenholtz W. G. Processing, Microstructure, and Mechanical Properties of Zirconium Diboride-Boron Carbide Ceramics // Ceram. Int. 2017. V. 43. № 9. P. 6942-6948.
- He R., Li Jing L., Qu Z., et al. Effects of ZrB2 Contents on the Mechanical Properties and Thermal Shock Resistance of B4C-ZrB2 Ceramics // Materials and Design. 2015. V. 71. P. 56-61.
- Wenbo H., Jiaxing G., Jihong Z., et al. Microstructure and Properties of B4C-ZrB2 Ceramic Composites // Int. J. Innov. Res. Sci. Eng. Technol. 2013. V. 3. P. 163-166.
- Chakraborty S., Debnath D., Mallick A., Das P. Mechanical, Tribological, and Thermal Properties of Hot- Pressed ZrB2-B4C Composite // Int. J. Appl. Ceram. Technol. 2015. V. 12. № 3. P. 568-576.
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