Email this article Evaluation of the Crack Resistance of Reactive Sintered Composite Boron Carbide-Based Materials
- Authors: Perevislov S.N.1
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Affiliations:
- I. V. Grebenshchikov Institute of Silicate Chemistry of the Russian Academy of Sciences
- Issue: Vol 60, No 2 (2019)
- Pages: 168-173
- Section: Article
- URL: https://journal-vniispk.ru/1083-4877/article/view/249266
- DOI: https://doi.org/10.1007/s11148-019-00330-0
- ID: 249266
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Abstract
The results of studying the crack resistance of reaction-sintered B4C–SiC composite materials impregnated with liquid silicon with identification and fracture methods are presented. With an increase in the amount of B4C in the reaction-sintered material, its fragility increases. The crack resistance of the material can be increased from 3.40 to 4.02 MPa·m1/2 (when tested by different methods) by adding to the composite material up to 30 wt.% SiC. The material is destroyed mainly by the intercrystalline (intergranular) mechanism. Ceramics containing more than 90 wt.% B4C, is partially destroyed by the transcrystalline mechanism.
About the authors
S. N. Perevislov
I. V. Grebenshchikov Institute of Silicate Chemistry of the Russian Academy of Sciences
Author for correspondence.
Email: perevislov@mail.ru
Russian Federation, St. Petersburg
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