Synthesis of all equiatomic five-transition metals High Entropy Carbides of the IVB (Ti, Zr, Hf) and VB (V, Nb, Ta) groups by a low temperature route
| Autor: | Cristina García-Garrido, Jesús Hernández-Saz, Ernesto Chicardi, Francisco J. Gotor |
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| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Materials science Process Chemistry and Technology Analytical chemistry Sintering 02 engineering and technology Thermal treatment 021001 nanoscience & nanotechnology 01 natural sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials Carbide Transition metal Powder metallurgy visual_art 0103 physical sciences Materials Chemistry Ceramics and Composites visual_art.visual_art_medium Mechanosynthesis Ceramic Graphite 0210 nano-technology |
| Zdroj: | Ceramics International. 46:21421-21430 |
| ISSN: | 0272-8842 |
| DOI: | 10.1016/j.ceramint.2020.05.240 |
| Popis: | The six possible equiatomic five-transition metal High Entropy Carbides (HECs) of the IVB (Ti, Zr, Hf) and VB (V, Nb, Ta) groups of the periodic table, i.e., TiZrHfVNbC5, TiZrHfVTaC5, TiZrHfNbTaC5, TiZrVNbTaC5, TiHfVNbTaC5 and ZrHfVNbTaC5, were successfully obtained via a powder metallurgy route at room temperature, specifically, by one-step diffusion mechanosynthesis starting from the elemental constituents (using graphite as the carbon source). Three of those HECs, TiZrHfVTaC5, TiZrVNbTaC5 and ZrHfVNbTaC5, were developed for the first time. Their development was possible without any subsequent thermal treatment, in contrast to the usual way (reactive sintering at 1800–2200 °C), and in a powder form, make them potential advanced raw ceramics for hard, refractory and oxidation resistance coatings or matrix phase composites. |
| Databáze: | OpenAIRE |
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