Sinterability, Mechanical Properties and Wear Behavior of Ti3SiC2 and Cr2AlC MAX Phases

Tabares, Eduardo; Kitzmantel, Michael; Neubauer, Erich; Jiménez-Morales, Antonia; Tsipas, S.A.

doi:10.3390/ceramics5010006

Cited by 9 publications

(2 citation statements)

References 31 publications

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“…Thus, ceramics are mainly represented by the Ti 3 SiC 2 , TiC, and SiC phases. The decrease in the apparent density of materials (Figure 6) with an increase in the sintering temperature is mainly due to an increase in the amount of evaporated Al, which is formed during the decomposition of Ti 3 AlC 2 , as well as to the formation of a difficult-to-sinter phase, Ti 3 SiC 2 [47].…”

Section: Microstructurementioning

confidence: 99%

Structure and Properties of Ti3AlC2-SiC and Ti3AlC2-TiC Materials Obtained by Powder Injection Molding Technology

2023

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Powder injection melting (PIM) and material extrusion additive manufacturing (MEAM) are promising production technologies that allow us to obtain products from modern composite materials. These technologies make it possible to obtain products of complex shape from ceramic composite materials, which is a non-trivial task. A highly filled polymer feedstock is used as a source material in such technologies. In this work, a study of the structures and properties of samples obtained from SiC-Ti3AlC2 and TiC-Ti3AlC2 feedstocks by the PIM method was performed. The main purpose of this work was to study the influence of the powder compositions in feedstocks on the rheological properties and the structures of the obtained samples, as well as to determine the sintering parameters of samples of these compositions. In the future, it is planned to use the received and studied feedstocks in material extrusion additive manufacturing (MEAM). It was found that the investigated compositions had different MFI values depending on the composition. The effect of the sintering parameters on the structure and properties was shown. During the sintering of SiC-Ti3AlC2 ceramics in the temperature range of 1200–1400 °C in a vacuum, the main components of the mixture interacted with the formation of Ti3SiC2 and TiC. For materials of the TiC-Ti3AlC2 composition, partial oxidation of the material and the formation of titanium and aluminum oxides was observed.

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Section: Microstructurementioning

confidence: 99%

Structure and Properties of Ti3AlC2-SiC and Ti3AlC2-TiC Materials Obtained by Powder Injection Molding Technology

2023

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“…They have a layered structure with alternating layers of titanium and transition-metal carbides or nitrides. Due to their layered structure, Ti-based MAX-phase materials exhibit distinctive properties (i.e., high thermal, electrical conductivity, good wear resistance, and high strength) that fill the gap between those metals and ceramics [10]. Not only that, some MAX phase materials exhibit low thermal conductivity and good thermal stability so that they could be utilized in thermal barrier coating for gas turbine engines [11].…”

Section: Introductionmentioning

confidence: 99%

First principle insights into the physical properties of Ti-based 211-MAX phase nitrides Ti₂AN (A = Tl and Pb)

Srinivasan,

Rana

2023

Phys. Scr.

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We have used the theoretical ab initio approach to scrutinize the electronic and other physical properties of Ti2AN (A = Tl and Pb). Geometrical optimization has been carried out to obtain accurate lattice constants and internal coordinates. The formation energies of Ti2TlN and Ti2PbN are found to be negative, which confirms their stability. The aforementioned compounds are found to be metallic because of their zero-band gaps. The metallicity fm (x 10−3) of Ti2TlN and Ti2PbN phases were determined to be 1.77 and 2.11, respectively. In addition, we evaluate the elastic constant Cij , which obeys the Born-Huang mechanical stability criterion. We used the Voigt-Reuss-Hill approximation for the analysis of Young’s modulus, shear modulus, and bulk modulus successfully. Furthermore, Ti2TlN is found to be brittle, but Ti2PbN is close to the brittle-ductile boundary line according to Pugh’s and Poisson’s ratios. The Debye temperature, melting temperature, and minimum thermal conductivity have all been rigorously studied to examine the potential scenarios of genuine high-temperature applications. Lower Young’s modulus, the minimum thermal conductivity (Ti2TlN and Ti2PbN), and Debye temperature values reveal that Ti2PbN might be used as a thermal barrier coating application. A study of elastic anisotropydemonstrates that Ti2PbN has a higher degree of anisotropy than Ti2TlN, according to the universal anisotropy index. We confirmed the dynamic stability (i.e., no negative frequencies at the gamma point) of predicted compounds by performing phonon DOSand phonon band structures. Finally, the temperature-dependent thermodynamic properties of Ti2TlN and Ti2PbN have been thoroughly analyzed, where the entropy (S), free energy, and internal energy (E) vary with respect to temperature. Moreover, the convergence of specific heat capacity is observed at constant volume to the DulongPetit limit at higher temperatures.

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Multifunctional Ti3AlC2-Based Composites via Fused Filament Fabrication and 3D Printing Technology

Chen

Hentschel

Lin

et al. 2023

J. of Materi Eng and Perform

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MAX phase, as a group of layered ternary carbides and nitrides exhibiting combined properties of metallic and ceramic materials, attracts increasing interest because they own exceptionally chemical, physical, electrical, thermal, and mechanical properties. In the present paper, a novel Ti3AlC2-based green part was manufactured by extrusion-based fused filament fabrication (FFF) and 3D printing technologies. The morphology, thermal/electrical conductivity, thermal stability, electromagnetic interference (EMI) shielding effectiveness (SE), and mechanical properties of Ti3AlC2/binder with the volume ratio of 1:1 were investigated. The tensile and compressive strengths and elongation are measured to be 8.29 MPa and 18.20%, 44.90 MPa and 33.76%, respectively. The morphology of the filament reveals that Ti3AlC2 powders are well bonded by the thermoplastic binder. More importantly, the composite shows good thermal and electrical conductivities together with the excellent EMI shielding effectiveness, which is of great potential in the practical applications as conductor, heat dissipating, anti-static, and EMI shielding materials. The successful fabrication of Ti3AlC2-based composites via FFF-based 3D printing technology is beneficial to develop other MAX phase products with complex geometries and additional functionalities.

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Sinterability, Mechanical Properties and Wear Behavior of Ti3SiC2 and Cr2AlC MAX Phases

Cited by 9 publications

References 31 publications

Structure and Properties of Ti3AlC2-SiC and Ti3AlC2-TiC Materials Obtained by Powder Injection Molding Technology

Structure and Properties of Ti3AlC2-SiC and Ti3AlC2-TiC Materials Obtained by Powder Injection Molding Technology

First principle insights into the physical properties of Ti-based 211-MAX phase nitrides Ti₂AN (A = Tl and Pb)

Multifunctional Ti3AlC2-Based Composites via Fused Filament Fabrication and 3D Printing Technology

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Sinterability, Mechanical Properties and Wear Behavior of Ti3SiC2 and Cr2AlC MAX Phases

Cited by 9 publications

References 31 publications

Structure and Properties of Ti3AlC2-SiC and Ti3AlC2-TiC Materials Obtained by Powder Injection Molding Technology

Structure and Properties of Ti3AlC2-SiC and Ti3AlC2-TiC Materials Obtained by Powder Injection Molding Technology

First principle insights into the physical properties of Ti-based 211-MAX phase nitrides Ti2AN (A = Tl and Pb)

Multifunctional Ti3AlC2-Based Composites via Fused Filament Fabrication and 3D Printing Technology

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Product

Resources

About

First principle insights into the physical properties of Ti-based 211-MAX phase nitrides Ti₂AN (A = Tl and Pb)