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Article

Microstructure and Mechanical Properties of Alumina Composites with Addition of Structurally Modified 2D Ti3C2 (MXene) Phase

1
Faculty of Material Science and Engineering, Warsaw University of Technology, Woloska 141 St, 02-507 Warsaw, Poland
2
Institute of High Pressure Physics, Polish Academy of Sciences, Sokolowska 29/37 St, 01-142 Warsaw, Poland
3
Faculty of Mechanical Engineering, Lodz University of Technology, Stefanowskiego 1/15 St, 90-924 Lodz, Poland
4
Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3 St, 00-664 Warsaw, Poland
*
Author to whom correspondence should be addressed.
Academic Editor: Alain Largeteau
Materials 2021, 14(4), 829; https://doi.org/10.3390/ma14040829
Received: 19 December 2020 / Revised: 28 January 2021 / Accepted: 4 February 2021 / Published: 10 February 2021
This study presents new findings related to the incorporation of MXene phases into ceramic. Aluminium oxide and synthesised Ti3C2 were utilised as starting materials. Knowing the tendency of MXenes to oxidation and degradation, particularly at higher temperatures, structural modifications were proposed. They consisted of creating the metallic layer on the Ti3C2, by sputtering the titanium or molybdenum. To prepare the composites, powder metallurgy and spark plasma sintering (SPS) techniques were adopted. In order to evaluate the effectiveness of the applied modifications, the emphasis of the research was placed on microstructural analysis. In addition, the mechanical properties of the obtained sinters were examined. Observations revealed significant changes in the MXenes degradation process, from porous areas with TiC particles (for unmodified Ti3C2), to in situ creation of graphitic carbon (in the case of Ti3C2-Ti/Mo). Moreover, the fracture changed from purely intergranular to cracking with high participation of transgranular mode, analogously. In addition, the results obtained showed an improvement in the mechanical properties for composites with Ti/Mo modifications (an increase of 10% and 15% in hardness and fracture toughness respectively, for specimens with 0.5 wt.% Ti3C2-Mo). For unmodified Ti3C2, enormously cracked areas with spatters emerged during tests, making the measurements impossible to perform. View Full-Text
Keywords: Al2O3; Ceramic; Ti3C2; MXene; ceramic matrix composites; spark plasma sintering; microstructure; mechanical properties Al2O3; Ceramic; Ti3C2; MXene; ceramic matrix composites; spark plasma sintering; microstructure; mechanical properties
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MDPI and ACS Style

Cygan, T.; Wozniak, J.; Petrus, M.; Lachowski, A.; Pawlak, W.; Adamczyk-Cieślak, B.; Jastrzębska, A.; Rozmysłowska-Wojciechowska, A.; Wojciechowski, T.; Ziemkowska, W.; Olszyna, A. Microstructure and Mechanical Properties of Alumina Composites with Addition of Structurally Modified 2D Ti3C2 (MXene) Phase. Materials 2021, 14, 829. https://doi.org/10.3390/ma14040829

AMA Style

Cygan T, Wozniak J, Petrus M, Lachowski A, Pawlak W, Adamczyk-Cieślak B, Jastrzębska A, Rozmysłowska-Wojciechowska A, Wojciechowski T, Ziemkowska W, Olszyna A. Microstructure and Mechanical Properties of Alumina Composites with Addition of Structurally Modified 2D Ti3C2 (MXene) Phase. Materials. 2021; 14(4):829. https://doi.org/10.3390/ma14040829

Chicago/Turabian Style

Cygan, Tomasz, Jaroslaw Wozniak, Mateusz Petrus, Artur Lachowski, Wojciech Pawlak, Bogusława Adamczyk-Cieślak, Agnieszka Jastrzębska, Anita Rozmysłowska-Wojciechowska, Tomasz Wojciechowski, Wanda Ziemkowska, and Andrzej Olszyna. 2021. "Microstructure and Mechanical Properties of Alumina Composites with Addition of Structurally Modified 2D Ti3C2 (MXene) Phase" Materials 14, no. 4: 829. https://doi.org/10.3390/ma14040829

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