TY - JOUR
T1 - Physico-chemical properties of CrMoN coatings - combined experimental and computational studies
AU - Jaf, Zainab N.
AU - Jiang, Zhong Tao
AU - Miran, Hussein A.
AU - Altarawneh, Mohammednoor
AU - Veder, Jean Pierre
AU - Minakshi, Manickam
AU - Zhou, Zhi feng
AU - Lim, H. N.
AU - Huang, N. M.
AU - Dlugogorski, Bogdan Z.
N1 - Funding Information:
Z. Jaf and H. Miran express their sincere appreciations to the Ministry of Higher Education and Scientific Research-University of Baghdad-College of Education for Pure Science, Ibn Al-Haitham, for the award of the PhD scholarships. This research work was financially supported by IRU-MRUNCollaborative Research Program (2015-2018; No.22) and Murdoch University SEIT/SHEE Small Research Grants.
Funding Information:
Z. Jaf and H. Miran express their sincere appreciations to the Ministry of Higher Education and Scientific Research-University of Baghdad-College of Education for Pure Science, Ibn Al-Haitham, for the award of the PhD scholarships. This research work was financially supported by IRU-MRUN Collaborative Research Program (2015-2018; No.22) and Murdoch University SEIT/SHEE Small Research Grants.
Publisher Copyright:
© 2019 Elsevier B.V.
PY - 2020/1/1
Y1 - 2020/1/1
N2 - In this study, Cr−Mo−N thin films with different Mo contents were synthesised via closed field unbalanced magnetron sputtering ion plating. The effects of Mo content on the microstructure, chemical bonding state, and optical properties of the prepared films were investigated by X-ray diffraction spectroscopy (XRD), X-ray photoelectron spectroscopy (XPS), field emission scanning electron microscopy, and ultraviolet-visible spectrophotometry. XRD results determined the face centered cubic (fcc) structure of pure CrN film. The incorporation of molybdenum (Mo) in the CrN matrix was confirmed by both XRD and XPS analyses. The CrMoN coatings demonstrate various polycrystalline phases including CrN, γ-Mo2N, Cr with oxides layers of MoO3, CrO3, and Cr2O3. Microstructural results of the Cr-Mo-N coatings show that the grain size increased with an increase in Mo content due to the formation of MoN phase, in which the Mo atoms interact with N atoms around the grain boundaries of the CrN phase. XPS investigations confirmed the presence of Cr, Mo, N, C and O elements in the studied coatings. The optical results revealed that the synthesised coatings exhibit low reflection magnitudes in the visible region of the solar spectrum indicating good antireflection surfaces. Mo doped thin coatings improve the solar absorptance by ~76% in the wavelength range of 200–800 nm with a low thermal emittance of ~ 20% in the infrared range (up to 4000 nm). Furthermore, by applying density functional theory, the computational simulation provides similar trends as the experimental finding of absorption coefficient in the wavelength range.
AB - In this study, Cr−Mo−N thin films with different Mo contents were synthesised via closed field unbalanced magnetron sputtering ion plating. The effects of Mo content on the microstructure, chemical bonding state, and optical properties of the prepared films were investigated by X-ray diffraction spectroscopy (XRD), X-ray photoelectron spectroscopy (XPS), field emission scanning electron microscopy, and ultraviolet-visible spectrophotometry. XRD results determined the face centered cubic (fcc) structure of pure CrN film. The incorporation of molybdenum (Mo) in the CrN matrix was confirmed by both XRD and XPS analyses. The CrMoN coatings demonstrate various polycrystalline phases including CrN, γ-Mo2N, Cr with oxides layers of MoO3, CrO3, and Cr2O3. Microstructural results of the Cr-Mo-N coatings show that the grain size increased with an increase in Mo content due to the formation of MoN phase, in which the Mo atoms interact with N atoms around the grain boundaries of the CrN phase. XPS investigations confirmed the presence of Cr, Mo, N, C and O elements in the studied coatings. The optical results revealed that the synthesised coatings exhibit low reflection magnitudes in the visible region of the solar spectrum indicating good antireflection surfaces. Mo doped thin coatings improve the solar absorptance by ~76% in the wavelength range of 200–800 nm with a low thermal emittance of ~ 20% in the infrared range (up to 4000 nm). Furthermore, by applying density functional theory, the computational simulation provides similar trends as the experimental finding of absorption coefficient in the wavelength range.
KW - Chromium molybdenum nitride
KW - Density functional theory
KW - Magnetron sputtering
KW - Optical material
KW - Ternary transition metal nitrides
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U2 - 10.1016/j.tsf.2019.137671
DO - 10.1016/j.tsf.2019.137671
M3 - Article
AN - SCOPUS:85075914258
SN - 0040-6090
VL - 693
JO - Thin Solid Films
JF - Thin Solid Films
M1 - 137671
ER -