Phase transition of ZrN under pressure

Durandurdu, Murat

doi:10.1080/14786435.2019.1566797

Cited by 3 publications

(1 citation statement)

References 48 publications

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“…Consequently, an investigation of novel stable crystal structures for metal-rich TMNs under high pressure is essential for the development of practical applications. Numerous studies exist on the phase stability, electronic structure, and mechanical properties of Ti-N, [11][12][13][14][15][16][17] Zr-N, [11][12][13][14][15][16][18][19][20] and Hf-N [12][13][14][15][16]18,21] systems. Recent studies using the evolutionary algorithm/search algorithm and density functional theory (DFT) have investigated the stable structures and possible stoichiometries of the TMN [15][16][17]20,21] systems.…”

Section: Introductionmentioning

confidence: 99%

Novel structures and mechanical properties of Zr₂N: Ab initio description under high pressures*

Wen¹,

Xie²,

Xie³

et al. 2021

Chinese Phys. B

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With the formation of structural vacancies, zirconium nitrides (key materials for cutting coatings, super wear-resistance, and thermal barrier coatings) display a variety of compositions and phases featuring both cation and nitrogen enrichment. This study presents a systematic exploration of the stable crystal structures of zirconium heminitride combining the evolutionary algorithm method and ab initio density functional theory calculations at pressures of 0 GPa, 30 GPa, 60 GPa, 90 GPa, 120 GPa, 150 GPa, and 200 GPa. In addition to the previously proposed phases P42/mnm-, Pnnm-, and Cmcm-Zr2N, five new high-pressure Zr2N phases of P4/nmm, I4/mcm, P21/m, P 3 ¯ m 1 , and C2/m are discovered. An enthalpy study of these candidate configurations reveals various structural phase transformations of Zr2N under pressure. By calculating the elastic constants and phonon dispersion, the mechanical and dynamical stabilities of all predicted structures are examined at ambient and high pressures. To understand the structure–property relationships, the mechanical properties of all Zr2N compounds are investigated, including the elastic moduli, Vickers hardness, and directional dependence of Young’s modulus. The Cmcm-Zr2N phase is found to belong to the brittle materials and has the highest Vickers hardness (12.9 GPa) among all candidate phases, while the I4/mcm-Zr2N phase is the most ductile and has the lowest Vickers hardness (2.1 GPa). Furthermore, the electronic mechanism underlying the diverse mechanical behaviors of Zr2N structures is discussed by analyzing the partial density of states.

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Section: Introductionmentioning

confidence: 99%

Novel structures and mechanical properties of Zr₂N: Ab initio description under high pressures*

Wen¹,

Xie²,

Xie³

et al. 2021

Chinese Phys. B

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Super-hard (MoSiTiVZr)Nx high-entropy nitride coatings

Chen

Zhao

et al. 2022

Journal of Alloys and Compounds

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Investigation of structural, electronic and elastic properties of matlockite-type SrFI under high pressure: An Ab-initio study

Öztürk

Güzel

Kürkçü

2021

Solid State Communications

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Phase transition of ZrN under pressure

Cited by 3 publications

References 48 publications

Novel structures and mechanical properties of Zr₂N: Ab initio description under high pressures*

Novel structures and mechanical properties of Zr₂N: Ab initio description under high pressures*

Super-hard (MoSiTiVZr)Nx high-entropy nitride coatings

Investigation of structural, electronic and elastic properties of matlockite-type SrFI under high pressure: An Ab-initio study

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Phase transition of ZrN under pressure

Cited by 3 publications

References 48 publications

Novel structures and mechanical properties of Zr2N: Ab initio description under high pressures*

Novel structures and mechanical properties of Zr2N: Ab initio description under high pressures*

Super-hard (MoSiTiVZr)Nx high-entropy nitride coatings

Investigation of structural, electronic and elastic properties of matlockite-type SrFI under high pressure: An Ab-initio study

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Product

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Novel structures and mechanical properties of Zr₂N: Ab initio description under high pressures*

Novel structures and mechanical properties of Zr₂N: Ab initio description under high pressures*