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Nader, Marc-Elie; Aldinger, Fritz; Hoffmann, Michael J.

doi:10.1023/a:1004552704872

Cited by 117 publications

(17 citation statements)

References 13 publications

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“…The presence of the liquid during the sintering process is supported by the phase transformation of β-SiC → α-SiC observed in both series of tested composites in the presented experiment. It also intensifies the diffusion processes responsible for the rate of phase transformation [43].…”

Section: Discussionmentioning

confidence: 99%

Influence of Ti3C2Tx MXene and Surface-Modified Ti3C2Tx MXene Addition on Microstructure and Mechanical Properties of Silicon Carbide Composites Sintered via Spark Plasma Sintering Method

et al. 2021

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This article presents new findings related to the problem of the introduction of MXene phases into the silicon carbide matrix. The addition of MXene phases, as shown by the latest research, can significantly improve the mechanical properties of silicon carbide, including fracture toughness. Low fracture toughness is one of the main disadvantages that significantly limit its use. As a part of the experiment, two series of composites were produced with the addition of 2D-Ti3C2Tx MXene and 2D-Ti3C2Tx surface-modified MXene with the use of the sol-gel method with a mixture of Y2O3/Al2O3 oxides. The composites were obtained with the powder metallurgy technique and sintered with the Spark Plasma Sintering method at 1900 °C. The effect adding MXene phases had on the mechanical properties and microstructure of the produced sinters was investigated. Moreover, the influence of the performed surface modification on changes in the properties of the produced composites was determined. The analysis of the obtained results showed that during sintering, the MXene phases oxidize with the formation of carbon flakes playing the role of reinforcement. The influence of the Y2O3/Al2O3 layer on the structure of carbon flakes and the higher quality of the interface was also demonstrated. This was reflected in the higher mechanical properties of composites with the addition of modified Ti3C2Tx. Composites with 1 wt.% addition of Ti3C2Tx M are characterized with a fracture toughness of 5 MPa × m0.5, which is over 50% higher than in the case of the reference sample and over 15% higher than for the composite with 2.5 wt.% addition of Ti3C2Tx, which showed the highest fracture toughness in this series.

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Section: Discussionmentioning

confidence: 99%

Influence of Ti3C2Tx MXene and Surface-Modified Ti3C2Tx MXene Addition on Microstructure and Mechanical Properties of Silicon Carbide Composites Sintered via Spark Plasma Sintering Method

et al. 2021

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“…Indeed, mechanical properties are lowered. [1][2][3][4] To reach full density with pure SiC, it was decided to use a relatively new process that is, field activated sintering, also known as spark plasma sintering (SPS). The SPS process allows various types of powders to be sintered.…”

Section: Introductionmentioning

confidence: 99%

Densification of SiC by SPS-effects of time, temperature and pressure

Guillard

Allemand

Lulewicz

et al. 2007

Journal of the European Ceramic Society

114

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“…The use of SPS sintering technology also made it possible to obtain a single-phase structure in the case of the produced composite. The β-SiC phase is unstable in a wide temperature range; therefore, during sintering with conventional sintering methods the β-SiC → α-SiC phase transformation occurs [ 51 ]. In the case of the SPS sintering technology, this phenomenon is significantly reduced due to the short time of the entire process.…”

Section: Discussionmentioning

confidence: 99%

Modelling and Characterisation of Residual Stress of SiC-Ti3C2Tx MXene Composites Sintered via Spark Plasma Sintering Method

et al. 2022

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This article presents an attempt to determine the effect of the MXene phase addition and its decomposition during sintering with the use of the spark plasma sintering method on mechanical properties and residual stress of silicon carbide based composites. For this purpose, the unreinforced silicon carbide sinter and the silicon carbide composite with the addition of 2 wt.% of Ti3C2Tx were tested. The results showed a significant increase of fracture toughness and hardness for composite, respectively 36% and 13%. The numerical study involving this novel method of modelling shows the presence of a complex state of stress in the material, which is related to the anisotropic properties of graphitic carbon structures formed during sintering. An attempt to determine the actual values of residual stress in the tested materials using Raman spectroscopy was also made. These tests showed a good correlation with the constructed numerical model and confirmed the presence of a complex state of residual stress.

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Untitled

Cited by 117 publications

References 13 publications

Influence of Ti3C2Tx MXene and Surface-Modified Ti3C2Tx MXene Addition on Microstructure and Mechanical Properties of Silicon Carbide Composites Sintered via Spark Plasma Sintering Method

Influence of Ti3C2Tx MXene and Surface-Modified Ti3C2Tx MXene Addition on Microstructure and Mechanical Properties of Silicon Carbide Composites Sintered via Spark Plasma Sintering Method

Densification of SiC by SPS-effects of time, temperature and pressure

Modelling and Characterisation of Residual Stress of SiC-Ti3C2Tx MXene Composites Sintered via Spark Plasma Sintering Method

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