Long-term thermal stability of CrAlO-based solar selective absorbing coating in elevated temperature air

Liu, H.D.; Wan, Qiang; Xu, Yingjie; Luo, Chang; Chen, Y.M.; Fu, Dejun; Ren, Feng; Luo, Gang; Cheng, Xiaomin; Hu, Xuejiao; Yang, Bing

doi:10.1016/j.solmat.2014.12.009

Cited by 52 publications

(9 citation statements)

References 15 publications

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“…In contrary, the high surface roughness can result in heat loss by increasing the emittance. It is well known that the emittance, a surface dependent property, mainly depends on the surface roughness of the coating [38]. The 3D AFM topography of the coating shows insignificant change in the surface roughness between as-deposited and heat treated coating after 350°C for 550 hrs in air (see Fig.…”

Section: Long Term Thermal Stabilitymentioning

confidence: 98%

Angular solar absorptance and thermal stability of W/WAlN/WAlON/Al2O3-based solar selective absorber coating

Dan

Chattopadhyay

Barshilia

et al. 2016

Applied Thermal Engineering

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In this paper, we report the solar absorptance property of a new tandem absorber consisting of layers W/WAlN/WAlON/Al 2 O 3 that holds promise for solar thermal energy harvesting. The coating was prepared by DC/RF magnetron sputtering on stainless steel substrate. The performance of the film was investigated by measuring the reflectance spectra in the wavelength range of 250-2500 nm and most importantly by varying the incident angle from 18° to 68°. The effect of thermal annealing on the optical properties, microstructure and morphology of the solar selective absorber coating was also explored. The thermal annealing of the coating at 350°C till 550 hrs in air did not result in any significant change in the spectral properties of the absorber coating. The excellent thermal stability and wide range of angular absorptance of this multilayer coating indicate the potential for application as selective coating in mid temperature photothermal conversion systems.

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Section: Long Term Thermal Stabilitymentioning

confidence: 98%

Angular solar absorptance and thermal stability of W/WAlN/WAlON/Al2O3-based solar selective absorber coating

Dan

Chattopadhyay

Barshilia

et al. 2016

Applied Thermal Engineering

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“…In recent years, various cermets and absorber-reflector tandem concept based coatings have been developed for high temperature solar thermal applications (Selvakumar and Barshilia, 2012;Esposito et al, 2009;Antonaia et al, 2010;Lanxner and Elgat (1990); Selvakumar et al, 2015;Rebouta et al, 2015;Jyothi et al, 2015;Liu et al, 2015;Valleti et al, 2014;Gong et al, 2015;Liu et al, 2014). Our group has developed various transition metal nitride/oxide based solar selective coatings for high temperature solar thermal applications (Selvakumar et al, 2015;Jyothi et al, 2015;Selvakumar et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

AlMoN based spectrally selective coating with improved thermal stability for high temperature solar thermal applications

Selvakumar

Rajaguru

Gouda³

et al. 2015

Solar Energy

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“…In these absorbing layers, when solar light radiates the metallic ceramic layer, the role of the metallic particles in the ceramic is to promote the solar absorptance by reason of their high intrinsic absorption [9]. Further, aluminum oxide (Al 2 O 3 ) and chromium oxide (Cr 3 O 4 and CrO 2 ) on the surface contributed to anti-reflection of coatings [10]. In Fig.…”

Section: Advances In Engineering Research Volume 146mentioning

confidence: 99%

The fabrications and optical properties of AlCrNO based Solar Selective Absorber Coatings by cathodic arc ion plating

Xu¹,

Gong²,

Niu³

et al. 2018

Proceedings of the 4th Annual International Conference on Material Engineering and Application (ICMEA 2017)

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Abstract-A series of AlCrNO based solar selective absorber coatings were deposited by cathodic arc ion plating on three kinds of different infrared reflectors (AlCr, Cu, Cr) and with different deposition currents respectively. The surface morphology, phase structure and surface roughness were characterized by field emission scanning electron microscopy (FE-SEM), X-ray diffraction (XRD), and roughmeter respectively. The results show that the AlCr-AlCrNO based coating exhibited a high absorptance of 0.91 and an emittance of 0.52 when AlCr was served as infrared reflector. Meanwhile, a higher absorptance (α=0.92) of AlCr-AlCrNO based coating was obtained when varying deposition current from 50 A to 60 A. Moreover, the roughness is one of impacts on the emittance. Increasing the deposition current to 70 A brings about the raising of the roughness, increasing the emittance therefore.

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Long-term thermal stability of CrAlO-based solar selective absorbing coating in elevated temperature air

Cited by 52 publications

References 15 publications

Angular solar absorptance and thermal stability of W/WAlN/WAlON/Al2O3-based solar selective absorber coating

Angular solar absorptance and thermal stability of W/WAlN/WAlON/Al2O3-based solar selective absorber coating

AlMoN based spectrally selective coating with improved thermal stability for high temperature solar thermal applications

The fabrications and optical properties of AlCrNO based Solar Selective Absorber Coatings by cathodic arc ion plating

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