Phase stability, mechanical properties and lattice thermal conductivity of ceramic material (Nb1−Ti )4AlC3 solid solutions

Jiao, Zhaoyong; Wang, Tianxing; Ma, Shuhong

doi:10.1016/j.jallcom.2016.06.108

Cited by 27 publications

(8 citation statements)

References 53 publications

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“…The actual hardening effect has only a weak relationship with the grain size, as both the as-sintered and heat-treated samples show an ideal hardening effect around x = 0.5. Such solid solution strengthening/hardening phenomena were also observed by experiments or proven by calculation for other MAX phase solid solutions such as (Ti 1-x V x ) 2 AlC [106], (Ti 1-x Zr x ) 3 SiC 2 [111], (Cr 1-x V x ) 2 AlC [112], (Nb 1-x Ti x ) 4 AlC 3 [113], etc. There are also some MAX phase solid solutions, such as Ti 3 Si x Ge 1− x C 2 [114], Ti 3 Al x Sn 1− x C 2 [115,116], (Ti 1-x Nb-…”

Section: Properties Of Max Phase Solid Solutionssupporting

confidence: 62%

On the formation mechanisms and properties of MAX phases: A review

Zhang

Duan

Jia

et al. 2021

Journal of the European Ceramic Society

129

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MAX phases are a family of ternary carbide or nitride ceramics possessing a layered crystal structure and, due to their chemical bonds having a mixed covalent-ionic-metallic nature, have unique properties combining those of metals and ceramics. In this review, the formation mechanisms of MAX phases from elemental and compound powders are reviewed in detail, as the formation mechanisms are closely related to the unique properties of wellsynthesized MAX phases. The stability of MAX phases in some harsh external environments is significantly influenced by the defect population, allowing the mechanisms of defect formation and migration to strongly influence their self-healing performance and radiation tolerance. The properties of MAX phases can be tailored by creating solid solutions, which have lattice distortions, and texturing which results in the preferential orientation of plate-like grains.

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Section: Properties Of Max Phase Solid Solutionssupporting

confidence: 62%

On the formation mechanisms and properties of MAX phases: A review

Zhang

Duan

Jia

et al. 2021

Journal of the European Ceramic Society

129

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“…Interestingly, the group of Zhang et al [20] has experimentally synthesized the quarternary MAX phase (Ti 1−x Nb x ) 3 AlC 2 (x = 0, 0.05, 0.1, 0.15, 0.18, 0.2, 1/3, 1/2 and 2/3) solid solutions recently, and they found that a e-mail: zhy jiao@htu.cn Nb doping can significantly improve the high-temperature strength of the Ti 3 AlC 2 compound. Similar cases have also been evidenced in available theoretical and experimental investigations, which also provided the desirable ways to improve the performance of MAX compounds by doping/substitution at the M sites [21][22][23][24][25], A sites [26][27][28][29], or X sites [30][31][32] of the MAX phases. Moreover, a study of the optical properties of crystals has been an interesting research topic both in basic research and industrial application.…”

Section: Introductionsupporting

confidence: 52%

“…E iso (Ti), E iso (Nb), E iso (Al) and E iso (C) are the energies of an isolated Ti, Si, Al and C atom, respectively, which are obtained in a large cubic cell of 15 Å. Moreover, the thermodynamic stability of (Ti 1−x Nb x ) 3 AlC 2 compounds relative to other competing phases can be further examined by equation ( 3) [40][41][42][43].…”

Section: Structures and Phase Stabilitymentioning

confidence: 99%

Theoretical study of mechanical, thermal and optical properties of (Ti1−xNb x )3AlC2 solid solutions

Jiao

Guo

2018

Eur. Phys. J. B

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Using first-principles calculations, the thermodynamic stability, mechanical and optical properties of the recently synthesized (Ti1−xNbx)3AlC2 (x = 0-1.0) solid solutions are studied. The present results revealed that all the (Ti1−xNbx)3AlC2 compounds are thermodynamically and elastically stable brittle materials, and the mechanical properties can be improved to some extent by Nb-doping. Moreover, the temperature dependence of lattice thermal conductivity for all the considered compounds are studied firstly and the minimum lattice thermal conductivities are also obtained. Specifically, calculated optical properties demonstrate that Nb-doped (Ti1−xNbx)3AlC2 solid solutions are possibly a good candidate materials in photoelectric applications. Computational detailsAll ab initio calculations were performed within the Vanderbilt-type ultrasoft pseudo-potentials method [36],

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“…Indeed quaternary MAX phases have attracted research interest as there is potential to fine tune the properties of a given MAX phase . For example, the right amount of Ge added to Cr 2 AlC allowed the resulting MAX phase solid solution to display an isotropic thermal expansion .…”

Section: Introductionmentioning

confidence: 99%

Synthesis and physical properties of (Zr_1−x,Ti_x)₃AlC₂MAX phases

et al. 2017

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MAX phase solid solutions physical and mechanical properties may be tuned via changes in composition, giving them a range of possible technical applications. In the present study, we extend the MAX phase family by synthesizing (Zr 1Àx Ti x ) 3 AlC 2 quaternary MAX phases and investigating their mechanical properties using density functional theory (DFT). The experimentally determined lattice parameters are in good agreement with the lattice parameters derived by DFT and deviate <0.5% from Vegard's law. Ti 3 AlC 2 has a higher Vickers hardness as compared to Zr 3 AlC 2 , in agreement with the available experimental data. The first (n=1) and second (n=2) members of the family are known as the 211 and 312 MAX phases respectively. A feature of them is the highly symmetric unit cell with atomic layers stacked along the c-direction. Numerous MAX phases were synthesized that shared these metallic and ceramic properties (good machinability, high melting temperature, high thermal shock resistance, high elastic stiffness, high thermal, and electrical conductivity), effectively motivating their technological application. [2][3][4][5] The key for the metallic and ceramic properties is the structure that consists of the stacking of M n+1 X n "ceramic" layer(s) interleaved by an A "metallic" layer. 2-5Ti-based MAX phases such as Ti 3 AlC 2 are of significant technical interest as they have excellent properties combined with a strong oxidation resistance in air due to formation of a passivating Al 2 O 3 outer layer.6 Related MAX phases have been investigated as candidate materials for passive safety protection of nuclear fuel cladding

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Phase stability, mechanical properties and lattice thermal conductivity of ceramic material (Nb1−Ti )4AlC3 solid solutions

Cited by 27 publications

References 53 publications

On the formation mechanisms and properties of MAX phases: A review

On the formation mechanisms and properties of MAX phases: A review

Theoretical study of mechanical, thermal and optical properties of (Ti1−xNb x )3AlC2 solid solutions

Synthesis and physical properties of (Zr_1−x,Ti_x)₃AlC₂MAX phases

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Phase stability, mechanical properties and lattice thermal conductivity of ceramic material (Nb1−Ti )4AlC3 solid solutions

Cited by 27 publications

References 53 publications

On the formation mechanisms and properties of MAX phases: A review

On the formation mechanisms and properties of MAX phases: A review

Theoretical study of mechanical, thermal and optical properties of (Ti1−xNb x )3AlC2 solid solutions

Synthesis and physical properties of (Zr1−x,Tix)3AlC2MAX phases

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Synthesis and physical properties of (Zr_1−x,Ti_x)₃AlC₂MAX phases