The double solid solution: (Zr, Nb)2(Al, Sn)C MAX phase: a steric stability approach

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The double solid solution: (Zr, Nb)2(Al, Sn)C MAX phase: a steric stability approach. / Lapauw, Thomas; Tunca, Bensu; Potashnikov, Daniel; Ozeri, Offir; Vleugels, Jozef; Lambrinou, Konstantza.

In: Scientific Reports, Vol. 8, 12801, 24.08.2018.

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Lapauw, Thomas ; Tunca, Bensu ; Potashnikov, Daniel ; Ozeri, Offir ; Vleugels, Jozef ; Lambrinou, Konstantza. / The double solid solution: (Zr, Nb)2(Al, Sn)C MAX phase: a steric stability approach. In: Scientific Reports. 2018 ; Vol. 8.

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@article{88602ece3c4e4928a55e36c23ee8b4fa,
title = "The double solid solution: (Zr, Nb)2(Al, Sn)C MAX phase: a steric stability approach",
abstract = "The addition of Nb and Sn to Zr2AlC is investigated, targeting the synthesis of a Zr-rich bulk MAX phase free of ZrC. The 211 phase formation in the two quaternary Zr-Nb-Al-C and Zr-Al-Sn-C systems is evaluated. Solubility over the entire compositional range in (Zr, Nb)2AlC and Zr2(Al, Sn)C is observed. In terms of effectiveness, the addition of Sn is preferred over the addition of Nb, as the former is selectively incorporated into the 211 structure. A combinatorial approach results in the formation of phase-pure (Zr0.8, Nb0.2)2(Al0.5, Sn0.5)C. The effect of the added solutes on the microstructure and crystallographic parameters is investigated. The addition of Nb and Sn reduces the distortion parameter of the trigonal prism compared to pure Zr2AlC. Therefore, an attempt is made to establish a more general stability criterion for the M2AC structure based on the steric relationship between the atoms in the M6A trigonal prism. Inspired by the Hume-Rothery rules, it is suggested that comparable atomic radii of the M- and A-atoms provide a good starting point to obtain a stable 211 MAX phase.",
keywords = "TI-AL-C, Mechanical properties, crystal-growht, temperature, carbide, behavior, TI3SCIC2, ZR",
author = "Thomas Lapauw and Bensu Tunca and Daniel Potashnikov and Offir Ozeri and Jozef Vleugels and Konstantza Lambrinou",
note = "Score=10",
year = "2018",
month = "8",
day = "24",
doi = "10.1038/s41598-018-31271-2",
language = "English",
volume = "8",
journal = "Scientific Reports",
issn = "2045-2322",
publisher = "Nature Publishing Group",

}

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TY - JOUR

T1 - The double solid solution: (Zr, Nb)2(Al, Sn)C MAX phase: a steric stability approach

AU - Lapauw, Thomas

AU - Tunca, Bensu

AU - Potashnikov, Daniel

AU - Ozeri, Offir

AU - Vleugels, Jozef

AU - Lambrinou, Konstantza

N1 - Score=10

PY - 2018/8/24

Y1 - 2018/8/24

N2 - The addition of Nb and Sn to Zr2AlC is investigated, targeting the synthesis of a Zr-rich bulk MAX phase free of ZrC. The 211 phase formation in the two quaternary Zr-Nb-Al-C and Zr-Al-Sn-C systems is evaluated. Solubility over the entire compositional range in (Zr, Nb)2AlC and Zr2(Al, Sn)C is observed. In terms of effectiveness, the addition of Sn is preferred over the addition of Nb, as the former is selectively incorporated into the 211 structure. A combinatorial approach results in the formation of phase-pure (Zr0.8, Nb0.2)2(Al0.5, Sn0.5)C. The effect of the added solutes on the microstructure and crystallographic parameters is investigated. The addition of Nb and Sn reduces the distortion parameter of the trigonal prism compared to pure Zr2AlC. Therefore, an attempt is made to establish a more general stability criterion for the M2AC structure based on the steric relationship between the atoms in the M6A trigonal prism. Inspired by the Hume-Rothery rules, it is suggested that comparable atomic radii of the M- and A-atoms provide a good starting point to obtain a stable 211 MAX phase.

AB - The addition of Nb and Sn to Zr2AlC is investigated, targeting the synthesis of a Zr-rich bulk MAX phase free of ZrC. The 211 phase formation in the two quaternary Zr-Nb-Al-C and Zr-Al-Sn-C systems is evaluated. Solubility over the entire compositional range in (Zr, Nb)2AlC and Zr2(Al, Sn)C is observed. In terms of effectiveness, the addition of Sn is preferred over the addition of Nb, as the former is selectively incorporated into the 211 structure. A combinatorial approach results in the formation of phase-pure (Zr0.8, Nb0.2)2(Al0.5, Sn0.5)C. The effect of the added solutes on the microstructure and crystallographic parameters is investigated. The addition of Nb and Sn reduces the distortion parameter of the trigonal prism compared to pure Zr2AlC. Therefore, an attempt is made to establish a more general stability criterion for the M2AC structure based on the steric relationship between the atoms in the M6A trigonal prism. Inspired by the Hume-Rothery rules, it is suggested that comparable atomic radii of the M- and A-atoms provide a good starting point to obtain a stable 211 MAX phase.

KW - TI-AL-C

KW - Mechanical properties

KW - crystal-growht

KW - temperature

KW - carbide

KW - behavior

KW - TI3SCIC2

KW - ZR

UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/30454180

U2 - 10.1038/s41598-018-31271-2

DO - 10.1038/s41598-018-31271-2

M3 - Article

VL - 8

JO - Scientific Reports

JF - Scientific Reports

SN - 2045-2322

M1 - 12801

ER -

ID: 4429045