Boron–Carbon Nanocomposites Fabricated at High Pressures and Temperatures
| Autor: | V. M. Prokhorov, N. R. Serebryanaya, R. Kh. Bagramov, Vladimir Blank |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Bulk modulus Materials science Nanocomposite Physics and Astronomy (miscellaneous) Diamond chemistry.chemical_element Young's modulus 02 engineering and technology Boron carbide engineering.material 021001 nanoscience & nanotechnology 01 natural sciences Shear modulus chemistry.chemical_compound symbols.namesake chemistry 0103 physical sciences symbols engineering Composite material 0210 nano-technology Boron Elastic modulus |
| Zdroj: | Technical Physics. 63:1010-1014 |
| ISSN: | 1090-6525 1063-7842 |
| DOI: | 10.1134/s1063784218070046 |
| Popis: | Interaction of amorphous boron and C60 fullerite is analyzed at pressures of 2.0 and 7.7. GPa and temperatures of 600–1800°C. Effect of pressure and temperature on the material structure is studied, temperatures for synthesis of boron carbide and diamond are found, and the sequence of transformations of the carbon component is determined. Ultrasonic method is used to measure elastic moduli of the samples, and the dependences of the moduli on the structure are analyzed. It is demonstrated that the boron–carbon nanocomposite synthesized at relatively low pressure (2.0 GPa) and temperature (about 1000°C) exhibits high elastic parameters (bulk modulus, B ≈ 75.3–84.0 GPa; Young modulus, E ≈ 108–119 GPa; and shear modulus, G ≈ 43–47 GPa at a density of about 2.2 g/cm3). The results can be used for development of novel nanocomposite materials. |
| Databáze: | OpenAIRE |
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