Optimization of the Ti3SiC2 MAX phase synthesis

Saeed, Muhammad; Deorsola, Fabio Alessandro; Rashad, R. M.

doi:10.1016/j.ijrmhm.2012.05.001

Cited by 62 publications

(17 citation statements)

References 26 publications

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“…However the XRD amorphous structures were also reported for Cr-Si-C, Ta-Si-C, Mo-Si-C and W-Si-C systems 60 – 64 . Another promising nanostructure based on Si-C system may be represented by the Ti 3 SiC 2 phase 65 or Ti 4 SiC 3 66 MAX phases. These nanolayered hexagonal ceramics, following the general formula M n+1 AX n (where n = 1,2,3, M is an early transition metal, A is a group A element and X is carbon or nitrogen), combines the merits of metals and ceramic such as high hardness, good machinability together with enhanced ductility 66 – 70 .…”

Section: Introductionmentioning

confidence: 99%

Effect of Nitrogen Doping and Temperature on Mechanical Durability of Silicon Carbide Thin Films

Tomáštík

Čtvrtlík

Ingr

et al. 2018

Sci Rep

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Amorphous silicon carbide (a-SiC) films are promising solution for functional coatings intended for harsh environment due to their superior combination of physical and chemical properties and high temperature stability. However, the structural applications are limited by its brittleness. The possible solution may be an introduction of nitrogen atoms into the SiC structure. The effect of structure and composition on tribo-mechanical properties of magnetron-sputtered a-SiCxNy thin films with various nitrogen content (0–40 at.%) and C/Si close to one deposited on silicon substrates were evaluated before and after exposure to high temperatures up to 1100 °C in air and vacuum. IR transmission spectroscopy revealed formation of multiple C-N bonds for the films with N content higher than 30 at.%. Improvement of the organization in the carbon phase with the increase of nitrogen content in the a-SiCN films was detected by Raman spectroscopy. Nanoindentation and scratch test point out on the beneficial effect of the nitrogen doping on the tribo-mechanical performance of a-SiCxNy coatings, especially for the annealed coatings. The improved fracture resistance of the SiCN films stems from the formation of triple C≡N bonds for the as deposited films and also by suppression of SiC clusters crystallization by incorporation of nitrogen atoms for annealed films. This together with higher susceptibility to oxidation of a-SiCN films impart them higher scratch and wear resistance in comparison to SiC films before as well as after the thermal exposure. The best tribo-mechanical performance in term of high hardness and sufficient level of ductility were observed for the a-Si0.32C0.32N0.36 film. The enhanced performance is preserved after the thermal exposure in air (up to 1100 °C) and vacuum (up to 900 °C) atmosphere. Annealing in oxidizing atmosphere has a beneficial effect in terms of tribological properties. Harder films with lower nitrogen content suffer from higher brittleness. FIB-SEM identified film-confined cracking as the initial failure event in SiC, while it was through-interface cracking for SiCN at higher loads. This points out on the higher fracture resistance of the SiCN films where higher strains are necessary for crack formation

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Section: Introductionmentioning

confidence: 99%

Effect of Nitrogen Doping and Temperature on Mechanical Durability of Silicon Carbide Thin Films

Tomáštík

Čtvrtlík

Ingr

et al. 2018

Sci Rep

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“…It indicates their formation during the SPS process or after the partial decomposition of the MAX phase. The presence of secondary phases of titanium silicides TiSi x has been observed during the synthesis of the Ti 3 SiC 2 phase from Ti/Si/TiC powders by SHS [30] as well as SPS. [31] It is assumed that the formation of the silicide phase can occur either in the reaction of titanium carbide with silicon or in the decomposition of the MAX phase.…”

Section: Microstructure and Elemental Compositionmentioning

confidence: 99%

Fabrication of Paper‐Derived Ti₃SiC₂‐Based Materials by Spark Plasma Sintering

et al. 2020

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Novel paper‐derived Ti3SiC2‐based ceramics are fabricated by spark plasma sintering (SPS). A Ti3SiC2‐loaded preceramic article is used as feedstock. The sintering temperature and pressure are 1100–1200 °C and 20–50 MPa, respectively. The influence of sintering parameters on phase composition and microstructure is analyzed by X‐ray diffraction (XRD) and scanning electron microscopy, respectively. In addition, energy‐dispersive X‐ray spectroscopy is conducted to analyze the distribution of elements and the phase arrangement depending on the sintering temperature. XRD analysis of the composites sintered at 1100 and 1200 °C shows the presence of Ti3SiC2, TiC, and TiSi2 phases while the content of Ti3SiC2 phase decreases with increasing temperature. It is shown that an increase in both temperature and pressure lead to higher densification of the composites. Elongated pores are observed in the composites, which are formed as a result of cellulose fiber decomposition during the sintering process. The maximal value of the flexural strength of 300 MPa is measured for the composite with the highest density. The influence of SPS parameters on the formation of phase composition, microstructure, and mechanical properties of the paper‐derived Ti3SiC2‐based ceramics is discussed.

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“…To synthesize bulk MAX phases, various methods have been used, e.g., both cold compacting and pressureless sintering [14], hot pressing (HP) [15], hot isostatic pressing (HIP) [16] and the field assisted sintering technology (FAST) [17]. In some cases, the self-propagating high-temperature synthesis (SHS) reaction also occurred [18]. However, the structure of MAX phase-based composites usually consists of various phases, and the influence of these phases on the mechanical properties of composites has not been studied in detail.…”

Section: Introductionmentioning

confidence: 99%

Structure and Deformation Behavior of Ti-SiC Composites Made by Mechanical Alloying and Spark Plasma Sintering

et al. 2019

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Combining high energy ball milling and spark plasma sintering is one of the most promising technologies in materials science. The mechanical alloying process enables the production of nanostructured composite powders that can be successfully spark plasma sintered in a very short time, while preserving the nanostructure and enhancing the mechanical properties of the composite. Composites with MAX phases are among the most promising materials. In this study, Ti/SiC composite powder was produced by high energy ball milling and then consolidated by spark plasma sintering. During both processes, Ti3SiC2, TiC and Ti5Si3 phases were formed. Scanning electron microscopy, energy-dispersive X-ray spectroscopy and X-ray diffraction study showed that the phase composition of the spark plasma sintered composites consists mainly of Ti3SiC2 and a mixture of TiC and Ti5Si3 phases which have a different indentation size effect. The influence of the sintering temperature on the Ti-SiC composite structure and properties is defined. The effect of the Ti3SiC2 MAX phase grain growth was found at a sintering temperature of 1400–1450 °C. The indentation size effect at the nanoscale for Ti3SiC2, TiC+Ti5Si3 and SiC-Ti phases is analyzed on the basis of the strain gradient plasticity theory and the equation constants were defined.

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Optimization of the Ti3SiC2 MAX phase synthesis

Cited by 62 publications

References 26 publications

Effect of Nitrogen Doping and Temperature on Mechanical Durability of Silicon Carbide Thin Films

Effect of Nitrogen Doping and Temperature on Mechanical Durability of Silicon Carbide Thin Films

Fabrication of Paper‐Derived Ti₃SiC₂‐Based Materials by Spark Plasma Sintering

Structure and Deformation Behavior of Ti-SiC Composites Made by Mechanical Alloying and Spark Plasma Sintering

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Optimization of the Ti3SiC2 MAX phase synthesis

Cited by 62 publications

References 26 publications

Effect of Nitrogen Doping and Temperature on Mechanical Durability of Silicon Carbide Thin Films

Effect of Nitrogen Doping and Temperature on Mechanical Durability of Silicon Carbide Thin Films

Fabrication of Paper‐Derived Ti3SiC2‐Based Materials by Spark Plasma Sintering

Structure and Deformation Behavior of Ti-SiC Composites Made by Mechanical Alloying and Spark Plasma Sintering

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Fabrication of Paper‐Derived Ti₃SiC₂‐Based Materials by Spark Plasma Sintering