Effects of annealing temperatures on the morphological, mechanical, surface chemical bonding, and solar selectivity properties of sputtered TiAlSiN thin films

JOURNAL OF ALLOYS AND COMPOUNDS

卷:671

Article

Rahman, M. Mahbubur¹  Jiang, Zhong-Tao¹  Zhou, Zhi-feng²  Xie, Zonghan^3,8  Yin, Chun Yang⁴  Kabir, Humayun⁵  Haque, Md. Mahbubul⁶  Amri, Amun⁷  Mondinos, Nicholas¹  Altarawneh, Mohammednoor¹ 

[1] Murdoch Univ, Sch Engn & Informat Technol, Surface Anal & Mat Engn Res Grp, Murdoch, WA 6150, Australia

[2] City Univ Hong Kong, Dept Mech & Biomed Engn, Kowloon, Hong Kong, Peoples R China

[3] Univ Adelaide, Sch Mech Engn, Adelaide, SA 5005, Australia

[4] Univ Teesside, Sch Sci & Engn, Borough Rd, Middlesbrough TS1 3BA, Cleveland, England

[5] Univ Birmingham, Sch Met & Mat, Birmingham B15 2TT, W Midlands, England

[6] Atom Energy Ctr Dhaka, Div Mat Sci, Dhaka 1000, Bangladesh

[7] Univ Riau, Dept Chem Engn, Pekanbaru, Indonesia

[8] Edith Cowan Univ, Sch Engn, Joondalup, WA 6027, Australia

关键词: Magnetron sputtering;    Thin film coatings;    Optical properties;    Solar absorptance;    Solar emittance;    Selective solar surface;   

DOI  :  10.1016/j.jallcom.2016.02.077

来源: Elsevier

【 摘 要 】

Quaternary sputtered TiAlSiN coatings were investigated for their high temperature structural stability, surface morphology, mechanical behaviors, surface chemical bonding states, solar absorptance and thermal emittance for possible solar selective surface applications. The TiAlSiN films were synthesized, via unbalanced magnetron sputtered technology, on AISI M2 steel substrate and annealed at 500 degrees C - 800 degrees C temperature range. SEM micrographs show nanocomposite-like structure with amorphous grain boundaries. Nanoindentation analyses indicate a decrease of hardness, plastic deformation and constant yield strength for the coatings. XPS analysis show mixed Ti, Al and Si nitride and oxide as main coating components but at 800 degrees C the top layer of the coatings is clearly composed of only Ti and Al oxides. Synchrotron radiation XRD (SR-XRD) results indicate various Ti, Al and Si nitride and oxide phases, for the above annealing temperature range with a phase change occurring with the Fe component of the substrate. UV-Vis spectroscopy, FTIR spectroscopy studies determined a high solar selectivity, s of 24.6 for the sample annealed at 600 degrees C. Overall results show good structural and morphological stability of these coatings at temperatures up to 800 degrees C with a very good solar selectivity for real world applications. (C) 2016 Elsevier B.V. All rights reserved.

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