Synthesis of MAX Phases in the Zr-Ti-Al-C System

Bensu Tunca, Thomas Lapauw, Olesia M. Karakulina, Maria Batuk, Thierry Cabioc'h, Joke Hadermann, Rémi Delville, Konstantina Lambrinou, Jozef Vleugels

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

This study reports on the synthesis and characterization of MAX phases in the (Zr,Ti)n+1AlCn system. The MAX phases were synthesized by reactive hot pressing and pressureless sintering in the 1350-1700 °C temperature range. The produced ceramics contained large fractions of 211 and 312 (n = 1, 2) MAX phases, while strong evidence of a 413 (n = 3) stacking was found. Moreover, (Zr,Ti)C, ZrAl2, ZrAl3, and Zr2Al3 were present as secondary phases. In general, the lattice parameters of the hexagonal 211 and 312 phases followed Vegard’s law over the complete Zr-Ti solid solution range, but the 312 phase showed a non-negligible deviation from Vegard’s law around the (Zr0.33,Ti0.67)3Al1.2C1.6 stoichiometry. High-resolution scanning transmission electron microscopy combined with X-ray diffraction demonstrated ordering of the Zr and Ti atoms in the 312 phase, whereby Zr atoms occupied preferentially the central position in the close-packed M6X octahedral layers. The same ordering was also observed in 413 stackings present within the 312 phase. The decomposition of the secondary (Zr,Ti)C phase was attributed to the miscibility gap in the ZrC-TiC system.

LanguageEnglish
Pages3489-3498
Number of pages10
JournalInorganic Chemistry
Volume56
Issue number6
Early online date3 Mar 2017
DOIs
Publication statusPublished - 20 Mar 2017
Externally publishedYes

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Atoms
miscibility gap
hot pressing
Hot pressing
synthesis
Stoichiometry
Lattice constants
atoms
stoichiometry
Solid solutions
lattice parameters
sintering
solid solutions
Sintering
Solubility
ceramics
Transmission electron microscopy
Decomposition
deviation
decomposition

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Tunca, B., Lapauw, T., Karakulina, O. M., Batuk, M., Cabioc'h, T., Hadermann, J., ... Vleugels, J. (2017). Synthesis of MAX Phases in the Zr-Ti-Al-C System. Inorganic Chemistry, 56(6), 3489-3498. https://doi.org/10.1021/acs.inorgchem.6b03057
Tunca, Bensu ; Lapauw, Thomas ; Karakulina, Olesia M. ; Batuk, Maria ; Cabioc'h, Thierry ; Hadermann, Joke ; Delville, Rémi ; Lambrinou, Konstantina ; Vleugels, Jozef. / Synthesis of MAX Phases in the Zr-Ti-Al-C System. In: Inorganic Chemistry. 2017 ; Vol. 56, No. 6. pp. 3489-3498.
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Tunca, B, Lapauw, T, Karakulina, OM, Batuk, M, Cabioc'h, T, Hadermann, J, Delville, R, Lambrinou, K & Vleugels, J 2017, 'Synthesis of MAX Phases in the Zr-Ti-Al-C System', Inorganic Chemistry, vol. 56, no. 6, pp. 3489-3498. https://doi.org/10.1021/acs.inorgchem.6b03057

Synthesis of MAX Phases in the Zr-Ti-Al-C System. / Tunca, Bensu; Lapauw, Thomas; Karakulina, Olesia M.; Batuk, Maria; Cabioc'h, Thierry; Hadermann, Joke; Delville, Rémi; Lambrinou, Konstantina; Vleugels, Jozef.

In: Inorganic Chemistry, Vol. 56, No. 6, 20.03.2017, p. 3489-3498.

Research output: Contribution to journalArticle

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AU - Tunca, Bensu

AU - Lapauw, Thomas

AU - Karakulina, Olesia M.

AU - Batuk, Maria

AU - Cabioc'h, Thierry

AU - Hadermann, Joke

AU - Delville, Rémi

AU - Lambrinou, Konstantina

AU - Vleugels, Jozef

PY - 2017/3/20

Y1 - 2017/3/20

N2 - This study reports on the synthesis and characterization of MAX phases in the (Zr,Ti)n+1AlCn system. The MAX phases were synthesized by reactive hot pressing and pressureless sintering in the 1350-1700 °C temperature range. The produced ceramics contained large fractions of 211 and 312 (n = 1, 2) MAX phases, while strong evidence of a 413 (n = 3) stacking was found. Moreover, (Zr,Ti)C, ZrAl2, ZrAl3, and Zr2Al3 were present as secondary phases. In general, the lattice parameters of the hexagonal 211 and 312 phases followed Vegard’s law over the complete Zr-Ti solid solution range, but the 312 phase showed a non-negligible deviation from Vegard’s law around the (Zr0.33,Ti0.67)3Al1.2C1.6 stoichiometry. High-resolution scanning transmission electron microscopy combined with X-ray diffraction demonstrated ordering of the Zr and Ti atoms in the 312 phase, whereby Zr atoms occupied preferentially the central position in the close-packed M6X octahedral layers. The same ordering was also observed in 413 stackings present within the 312 phase. The decomposition of the secondary (Zr,Ti)C phase was attributed to the miscibility gap in the ZrC-TiC system.

AB - This study reports on the synthesis and characterization of MAX phases in the (Zr,Ti)n+1AlCn system. The MAX phases were synthesized by reactive hot pressing and pressureless sintering in the 1350-1700 °C temperature range. The produced ceramics contained large fractions of 211 and 312 (n = 1, 2) MAX phases, while strong evidence of a 413 (n = 3) stacking was found. Moreover, (Zr,Ti)C, ZrAl2, ZrAl3, and Zr2Al3 were present as secondary phases. In general, the lattice parameters of the hexagonal 211 and 312 phases followed Vegard’s law over the complete Zr-Ti solid solution range, but the 312 phase showed a non-negligible deviation from Vegard’s law around the (Zr0.33,Ti0.67)3Al1.2C1.6 stoichiometry. High-resolution scanning transmission electron microscopy combined with X-ray diffraction demonstrated ordering of the Zr and Ti atoms in the 312 phase, whereby Zr atoms occupied preferentially the central position in the close-packed M6X octahedral layers. The same ordering was also observed in 413 stackings present within the 312 phase. The decomposition of the secondary (Zr,Ti)C phase was attributed to the miscibility gap in the ZrC-TiC system.

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M3 - Article

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Tunca B, Lapauw T, Karakulina OM, Batuk M, Cabioc'h T, Hadermann J et al. Synthesis of MAX Phases in the Zr-Ti-Al-C System. Inorganic Chemistry. 2017 Mar 20;56(6):3489-3498. https://doi.org/10.1021/acs.inorgchem.6b03057