• Ziemkowska, Wanda
• Wozniak, Jaroslaw
• Lachowski, Artur
• Chlubny, Leszek
• Cygan, Tomasz
• Olszyna, Andrzej
• Wojciechowski, Tomasz
• Jastrzębska, Anna
• Rozmysłowska-Wojciechowska, Anita
• Adamczyk-Cieślak, Bogusława
• Petrus, Mateusz

Abstract

<jats:title>Abstract</jats:title><jats:p>This article describes the manufacturing of silicon carbide composites with the addition of quasi-two-dimensional titanium carbide Ti<jats:sub>3</jats:sub>C<jats:sub>2</jats:sub>, 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 Ti<jats:sub>3</jats:sub>C<jats:sub>2</jats:sub> 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% Ti<jats:sub>3</jats:sub>C<jats:sub>2</jats:sub> 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.</jats:p>

Topics

• nanocomposite
• microstructure
• Carbon
• phase
• carbide
• hardness
• chemical composition
• Silicon
• titanium
• two-dimensional
• fracture toughness
• sintering