Silicon carbide nanocomposites reinforced with disordered graphitic carbon formed in situ through oxidation of Ti3C2 MXene during sintering
| Autor: | Jarosław Woźniak, Tomasz Wojciechowski, Bogusława Adamczyk-Cieślak, Agnieszka Jastrzebska, L. Chlubny, Tomasz Cygan, Anita Rozmysłowska-Wojciechowska, Wanda Ziemkowska, Andrzej Olszyna, Artur Lachowski, Mateusz Petrus |
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| Rok vydání: | 2021 |
| Předmět: |
Titanium carbide
Materials science Graphene Mechanical Engineering Sintering Spark plasma sintering 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Microstructure 01 natural sciences 0104 chemical sciences law.invention chemistry.chemical_compound chemistry law Powder metallurgy Silicon carbide Graphite Composite material 0210 nano-technology Civil and Structural Engineering |
| Zdroj: | Archives of Civil and Mechanical Engineering. 21 |
| ISSN: | 1644-9665 |
| Popis: | This article describes the manufacturing of silicon carbide composites with the addition of quasi-two-dimensional titanium carbide Ti3C2, known as MXene. The composites were obtained by the powder metallurgy technique, consolidated with the use of the Spark Plasma Sintering method at 1900 °C and dwelled for 30 min. The influence of the Ti3C2 MXene addition on the microstructure and mechanical properties of the composites was investigated. The structure of the MXene phase after the sintering process was also analyzed. The results showed a significant increase (almost 50%) of fracture toughness for composites with the addition of 0.2 wt% Ti3C2 MXene. In turn, the highest hardness, 23.2 GPa, was noted for the composite with the addition of the 1.5 wt% Ti3C2 MXene phase. This was an increase of over 10% in comparison to the reference sample. The analysis of chemical composition and observations using a transmission electron microscope showed that the Ti3C2 MXene phase oxidizes during sintering, resulting in the formation of crystalline, highly defected, disordered graphite structures. The presence of these structures in the microstructure, similarly to graphene, significantly affects the hardness and fracture toughness of silicon carbide. |
| Databáze: | OpenAIRE |
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