Experimental and predicted mechanical properties of Cr                        1-x                        AI                        x                        N thin films, at high temperatures, incorporating in situ synchrotron radiation X-ray diffraction and computational modelling

Ehsan Mohammadpour; Zhong Tao Jiang; Mohmmednoor Altarawneh; Nicholas Mondinos; M. Mahbubur Rahman; H. N. Lim; N. M. Huang; Zonghan Xie; Zhi Feng Zhou; Bogdan Z. Dlugogorski

doi:10.1039/c7ra00342k

Experimental and predicted mechanical properties of Cr _1-x AI _x N thin films, at high temperatures, incorporating in situ synchrotron radiation X-ray diffraction and computational modelling

Ehsan Mohammadpour, Zhong Tao Jiang, Mohmmednoor Altarawneh, Nicholas Mondinos, M. Mahbubur Rahman, H. N. Lim, N. M. Huang, Zonghan Xie, Zhi Feng Zhou, Bogdan Z. Dlugogorski

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Abstract

Cr _1-x Al _x N coatings, synthesised by an unbalanced magnetic sputtering system, showed improved microstructure and mechanical properties for ∼14-21% Al content. In situ SR-XRD analysis indicated various crystalline phases in the coatings that included: CrN, AlN, α-Cr with small amounts of AlO ₂ and Al ₂ O ₃ over the 25-700 °C range. Al doping improves resistance to crystal growth, stress release and oxidation resistance of the coatings. Al doping also enhances the coating hardness (H) from 29 to 42 GPa, elastic modulus (E) from 378 to 438 GPa and increased the resistance to deformation. First-principles and quasi-harmonic approximation (QHA) studies on bulk CrN and AlN were incorporated to predict the thermo-elastic properties of Cr _1-x Al _x N thin film coatings in the temperature range of 0-1500 °C. The simulated results at T = 1500 °C give a predicted hardness of H = ∼41.5 GPa for a ∼21% Al doped Cr _1-x Al _x N coating.

Original language	English
Pages (from-to)	22094-22104
Number of pages	11
Journal	RSC Advances
Volume	7
Issue number	36
Early online date	20 Apr 2017
DOIs	https://doi.org/10.1039/c7ra00342k
Publication status	Published - 2017
Externally published	Yes

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Mohammadpour, E., Jiang, Z. T., Altarawneh, M., Mondinos, N., Rahman, M. M., Lim, H. N., Huang, N. M., Xie, Z., Zhou, Z. F., & Dlugogorski, B. Z. (2017). Experimental and predicted mechanical properties of Cr _1-x AI _x N thin films, at high temperatures, incorporating in situ synchrotron radiation X-ray diffraction and computational modelling. RSC Advances, 7(36), 22094-22104. https://doi.org/10.1039/c7ra00342k

Mohammadpour, Ehsan ; Jiang, Zhong Tao ; Altarawneh, Mohmmednoor et al. / Experimental and predicted mechanical properties of Cr _1-x AI _x N thin films, at high temperatures, incorporating in situ synchrotron radiation X-ray diffraction and computational modelling. In: RSC Advances. 2017 ; Vol. 7, No. 36. pp. 22094-22104.

@article{ccffde84705041728e7c749cc7fe578b,

title = "Experimental and predicted mechanical properties of Cr 1-x AI x N thin films, at high temperatures, incorporating in situ synchrotron radiation X-ray diffraction and computational modelling",

abstract = " Cr 1-x Al x N coatings, synthesised by an unbalanced magnetic sputtering system, showed improved microstructure and mechanical properties for ∼14-21% Al content. In situ SR-XRD analysis indicated various crystalline phases in the coatings that included: CrN, AlN, α-Cr with small amounts of AlO 2 and Al 2 O 3 over the 25-700 °C range. Al doping improves resistance to crystal growth, stress release and oxidation resistance of the coatings. Al doping also enhances the coating hardness (H) from 29 to 42 GPa, elastic modulus (E) from 378 to 438 GPa and increased the resistance to deformation. First-principles and quasi-harmonic approximation (QHA) studies on bulk CrN and AlN were incorporated to predict the thermo-elastic properties of Cr 1-x Al x N thin film coatings in the temperature range of 0-1500 °C. The simulated results at T = 1500 °C give a predicted hardness of H = ∼41.5 GPa for a ∼21% Al doped Cr 1-x Al x N coating. ",

author = "Ehsan Mohammadpour and Jiang, {Zhong Tao} and Mohmmednoor Altarawneh and Nicholas Mondinos and Rahman, {M. Mahbubur} and Lim, {H. N.} and Huang, {N. M.} and Zonghan Xie and Zhou, {Zhi Feng} and Dlugogorski, {Bogdan Z.}",

year = "2017",

doi = "10.1039/c7ra00342k",

language = "English",

volume = "7",

pages = "22094--22104",

journal = "RSC Advances: an international journal to further the chemical sciences",

issn = "2046-2069",

publisher = "Royal Society of Chemistry (RSC)",

number = "36",

}

Mohammadpour, E, Jiang, ZT, Altarawneh, M, Mondinos, N, Rahman, MM, Lim, HN, Huang, NM, Xie, Z, Zhou, ZF & Dlugogorski, BZ 2017, 'Experimental and predicted mechanical properties of Cr _1-x AI _x N thin films, at high temperatures, incorporating in situ synchrotron radiation X-ray diffraction and computational modelling', RSC Advances, vol. 7, no. 36, pp. 22094-22104. https://doi.org/10.1039/c7ra00342k

Experimental and predicted mechanical properties of Cr _1-x AI _x N thin films, at high temperatures, incorporating in situ synchrotron radiation X-ray diffraction and computational modelling. / Mohammadpour, Ehsan; Jiang, Zhong Tao; Altarawneh, Mohmmednoor et al.

In: RSC Advances, Vol. 7, No. 36, 2017, p. 22094-22104.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Experimental and predicted mechanical properties of Cr 1-x AI x N thin films, at high temperatures, incorporating in situ synchrotron radiation X-ray diffraction and computational modelling

AU - Mohammadpour, Ehsan

AU - Jiang, Zhong Tao

AU - Altarawneh, Mohmmednoor

AU - Mondinos, Nicholas

AU - Rahman, M. Mahbubur

AU - Lim, H. N.

AU - Huang, N. M.

AU - Xie, Zonghan

AU - Zhou, Zhi Feng

AU - Dlugogorski, Bogdan Z.

PY - 2017

Y1 - 2017

N2 - Cr 1-x Al x N coatings, synthesised by an unbalanced magnetic sputtering system, showed improved microstructure and mechanical properties for ∼14-21% Al content. In situ SR-XRD analysis indicated various crystalline phases in the coatings that included: CrN, AlN, α-Cr with small amounts of AlO 2 and Al 2 O 3 over the 25-700 °C range. Al doping improves resistance to crystal growth, stress release and oxidation resistance of the coatings. Al doping also enhances the coating hardness (H) from 29 to 42 GPa, elastic modulus (E) from 378 to 438 GPa and increased the resistance to deformation. First-principles and quasi-harmonic approximation (QHA) studies on bulk CrN and AlN were incorporated to predict the thermo-elastic properties of Cr 1-x Al x N thin film coatings in the temperature range of 0-1500 °C. The simulated results at T = 1500 °C give a predicted hardness of H = ∼41.5 GPa for a ∼21% Al doped Cr 1-x Al x N coating.

AB - Cr 1-x Al x N coatings, synthesised by an unbalanced magnetic sputtering system, showed improved microstructure and mechanical properties for ∼14-21% Al content. In situ SR-XRD analysis indicated various crystalline phases in the coatings that included: CrN, AlN, α-Cr with small amounts of AlO 2 and Al 2 O 3 over the 25-700 °C range. Al doping improves resistance to crystal growth, stress release and oxidation resistance of the coatings. Al doping also enhances the coating hardness (H) from 29 to 42 GPa, elastic modulus (E) from 378 to 438 GPa and increased the resistance to deformation. First-principles and quasi-harmonic approximation (QHA) studies on bulk CrN and AlN were incorporated to predict the thermo-elastic properties of Cr 1-x Al x N thin film coatings in the temperature range of 0-1500 °C. The simulated results at T = 1500 °C give a predicted hardness of H = ∼41.5 GPa for a ∼21% Al doped Cr 1-x Al x N coating.

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DO - 10.1039/c7ra00342k

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JO - RSC Advances: an international journal to further the chemical sciences

JF - RSC Advances: an international journal to further the chemical sciences

SN - 2046-2069

IS - 36

ER -

Mohammadpour E, Jiang ZT, Altarawneh M, Mondinos N, Rahman MM, Lim HN et al. Experimental and predicted mechanical properties of Cr _1-x AI _x N thin films, at high temperatures, incorporating in situ synchrotron radiation X-ray diffraction and computational modelling. RSC Advances. 2017;7(36):22094-22104. https://doi.org/10.1039/c7ra00342k

Experimental and predicted mechanical properties of Cr _1-x AI _x N thin films, at high temperatures, incorporating in situ synchrotron radiation X-ray diffraction and computational modelling

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