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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
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