Surface structure and the optical properties of black chrome

Smith, G.B.; McPhedran, R. C.; Derrick, G. H.

doi:10.1007/bf00616552

Cited by 17 publications

(4 citation statements)

References 41 publications

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“…However more characterization studies are needed to exactly figure out the reason for this behavior. Similar changes in optical properties were observed in case of bare black chrome upon heat treatment (Smith, Mcphedran, & Derrick, 1985) where lower Cr concentration resulted in lower absorbance in visible/NIR range .…”

Section: Thermal Stability Of Ssasupporting

confidence: 77%

Spectrally selective solar absorber stable up to 900 °C for 120 h under ambient conditions

et al. 2018

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Concentrated solar power (CSP) technology, which converts sunlight into heat and then electricity, is an attractive alternative to photovoltaics because of its high capacity for thermalenergy storage, which can be converted, to electricity after sunset. As the efficiency of this technology is limited by the Carnot efficiency, higher absorber temperatures are desirable. At high temperatures conversion efficiency is limited by heat loss from solar absorbers via radiation in infrared wavelengths. Hence, it is desirable to develop selective solar absorbers, which can absorb solar radiation while reflecting infrared radiation. It is also important to develop high temperature selective solar absorbers, which can work in ambient conditions to reduce cost as compared to those that work under vacuum. Here, we report a selective solar absorber made of black chrome/ITO/SiO2, deposited on stainless steel, which showed stable performance at 900°C under ambient conditions for 120 hours. The proposed selective solar absorber exhibits an absorptance of 0.9 in the solar spectrum with an infrared emittance of 0.4 beyond wavelengths of 6 µm.

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Section: Thermal Stability Of Ssasupporting

confidence: 77%

Spectrally selective solar absorber stable up to 900 °C for 120 h under ambient conditions

et al. 2018

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“…Cu, stainless-steel substrates, has an α/ε(100°C)=0.97/0.09 for temperatures < 300°C[44,[53][54][55][56][57][58][59]. Black chrome is commercially produced by MTI on Ni-plated Cu in the United States, by ChromeCoat of Denmark on copper, and on stainless-steel by Energie Solaire in Switzerland…”

mentioning

confidence: 99%

Review of Mid- to High-Temperature Solar Selective Absorber Materials

Kennedy¹

2002

443

311

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“…Commercial Cr-CrO 3 composite coatings on metal substrates with excellent optical properties have been prepared by electrodeposition. [11][12][13] Ni-Al 2 O 3 composite coatings with low thermal emittance (0.08 to 0.21) and high solar absorptance (0.85 to 0.97) have been prepared by electrochemically impregnating anodized aluminum with nickel. 8,14,15 Kaluza et al 16 showed that the sol-gel method is suitable for producing composite coatings for solar absorbers.…”

Section: Introductionmentioning

confidence: 99%

Optical Properties and Durability of Al2O3-NiP/Al Solar Absorbers Prepared by Electroless Nickel Composite Plating

Tsai

Hsueh

Lee

et al. 2011

Journal of Elec Materi

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A simple and low-cost method, electroless nickel composite plating, was used to deposit an Al 2 O 3 -NiP composite coating on an Al substrate to form an Al 2 O 3 -NiP/Al solar absorber. The effects of the Al 2 O 3 content in the Al 2 O 3 -NiP composite coating, the thickness of the coating, and the use of a double-layer Al 2 O 3 -NiP composite coating and a TiO 2 antireflection (AR) layer on the optical characteristics of the Al 2 O 3 -NiP/Al absorbers were studied. The absorptance (a) and thermal emittance (e) of the Al 2 O 3 -NiP/Al absorbers increased with the Al 2 O 3 content in the Al 2 O 3 -NiP composite coating and decreased as the thickness of the coating increased. A double-layer Al 2 O 3 -NiP/ Al absorber with 2:1 thickness ratio of the top layer (Al 2 O 3 -NiP with 25 vol.% Al 2 O 3 ) to the inner layer (Al 2 O 3 -NiP with 7 vol.% Al 2 O 3 ) had the best optical properties (a/e = 0.746/0.103). The optimal double-layer Al 2 O 3 -NiP/Al absorber with a 106-nm-thick TiO 2 AR layer achieved absorptance of 0.893 and thermal emittance of 0.111. The results of a thermal stability test and a condensation test revealed that the TiO 2 -coated double-layer Al 2 O 3 -NiP/Al absorbers had excellent thermal stability, and their failure time in the condensation test exceeded 100 h.

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Surface structure and the optical properties of black chrome

Cited by 17 publications

References 41 publications

Spectrally selective solar absorber stable up to 900 °C for 120 h under ambient conditions

Spectrally selective solar absorber stable up to 900 °C for 120 h under ambient conditions

Review of Mid- to High-Temperature Solar Selective Absorber Materials

Optical Properties and Durability of Al2O3-NiP/Al Solar Absorbers Prepared by Electroless Nickel Composite Plating

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Surface structure and the optical properties of black chrome

Cited by 17 publications

References 41 publications

Spectrally selective solar absorber stable up to 900 °C for 120 h under ambient conditions

Spectrally selective solar absorber stable up to 900 °C for 120 h under ambient conditions

Review of Mid- to High-Temperature Solar Selective Absorber Materials

Optical Properties and Durability of Al2O3-NiP/Al Solar Absorbers Prepared by Electroless Nickel Composite Plating

Contact Info

Product

Resources

About

Spectrally selective solar absorber stable up to 900 °C for 120 h under ambient conditions

Spectrally selective solar absorber stable up to 900 °C for 120 h under ambient conditions