Study of the habitus of mullite crystals in composite ceramics «mullite–zirconium dioxide»

Maximov V.G., Babashov V.G., Varrik N.M., Lyulyukina G.Yu.
UDC
666.762.14
DOI
10.18577/2307-6046-2023-0-1-119-127
Article PDF (Russian) (710.41 KB)
How to cite
Maximov V.G., Babashov V.G., Varrik N.M., Lyulyukina G.Yu. Study of the habitus of mullite crystals in composite ceramics «mullite–zirconium dioxide» // Proceedings of VIAM. 2023. No. 1. DOI: 10.18577/2307-6046-2023-0-1-119-127. URL: https://test.viam.ru/en/journal/2023/1/10
Keywords
ceramic composite material, sol-gel method, mullite, zirconium dioxide, crystal structure, habitus
Abstract

Presents the results of studying the microstructure features of the ceramic composite material «mullite–zirconium dioxide». It is confirmed that the crystals of mullite, as in traditional mullite ceramics, have the habit of a long four-sided prism. Zirconium dioxide crystals provide hardening of the material by the mechanism of turning the crack to the interface, which, in combination with the specific habitus of the crystals of the main phase, leads to the formation of a characteristic highly developed fracture surface and improves the resistance of the material to cracking.

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