Structure and Properties of the Directionally Crystallized B4C–NbB2–SiC Alloy
| Autor: | Yu. I. Bogomol, V. V. Bolbut, M. I. Upatov, E. R. Abdullaeva |
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| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Zone melting Materials science Alloy Composite number 02 engineering and technology engineering.material 01 natural sciences Inorganic Chemistry 020303 mechanical engineering & transports Fracture toughness 0203 mechanical engineering Flexural strength Ternary eutectic 0103 physical sciences Vickers hardness test engineering General Materials Science Composite material Eutectic system |
| Zdroj: | Journal of Superhard Materials. 42:18-24 |
| ISSN: | 1934-9408 1063-4576 |
| DOI: | 10.3103/s1063457620010074 |
| Popis: | The 32B4C–30NbB2–38SiC composite (mol %) has been prepared by the floating zone melting method. The structure of the obtained composite consists of a coarse-grained binary eutectic (NbB2–SiC), a fine-grained ternary eutectic (B4C–NbB2–SiC), and large SiC dendrites. The effect of the crystallization rate on the structure and properties of the prepared composite is studied. The Vickers hardness, fracture toughness, and bending strength of the 32B4C–30NbB2–38SiC composite are 31–36 GPа, 4.0–5.1 GPа m1/2, and 203–252 GPa, respectively. |
| Databáze: | OpenAIRE |
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