Thermal Stability of Chromium-Iron Oxidation Mixture Cermet-Based Solar Selective Absorbing Coatings

Yu, Huiping; Li, Jinkai; Zhang, Qian; Pang, Wei; Yan, Hui; Li, Guangyuan

doi:10.3390/molecules25051178

Cited by 6 publications

(2 citation statements)

References 28 publications

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“…It can be found in Figure that the reflectance spectra changed little after heating in the air at 600 °C for 144 h; the α̅ solar and ε̅ IR were almost constant at 0.817 and 0.098, respectively. These results indicated that SSAs prepared by high-temperature in situ oxidation had excellent thermal stability at 600 °C, which can be attributed to the Cr 2 O 3 with outstanding thermal stability. − …”

Section: Resultsmentioning

confidence: 84%

In Situ Oxidizing Commercial Alloy to Achieve Selective Solar Absorption with High-Temperature Stability

Zhang,

Chen,

Yan

et al. 2023

ACS Appl. Energy Mater.

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A solar selective absorber (SSA) with high solar absorptance and low thermal emittance is significant for solar–thermal applications to improve their solar–thermal conversion efficiencies. Developing high-temperature stable and easily manufactured SSAs is critical in next-generation solar power systems. In this work, a simple and general method by in situ oxidizing a commercial alloy was proposed to prepare high-temperature stable SSAs, which can be used on various commercial alloy materials (such as stainless steel and W–Cu alloy) and complex geometry structures to adapt to different solar–thermal applications. Further analysis showed that the selective spectrum was achieved by the high absorptance of metal oxide in the solar band and the low emittance of alloy substrates in the mid-infrared band. Taking the stainless steel 304 as an example, the average solar absorptance (α̅solar) and thermal emittance (ε̅IR) can reach 0.848/0.171 after oxidizing at 900 °C for 2 h or 0.824/0.098 after oxidizing at 800 °C for 2 h. Meanwhile, the SSAs can operate stably for more than 144 h in air at 600 °C due to the high-temperature generation of Cr2O3. These results indicate that in situ oxidizing commercial alloys can be a simple, low-cost, and scalable manufacturing strategy to prepare high-temperature stable SSAs in various solar–thermal applications.

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Section: Resultsmentioning

confidence: 84%

In Situ Oxidizing Commercial Alloy to Achieve Selective Solar Absorption with High-Temperature Stability

Zhang,

Chen,

Yan

et al. 2023

ACS Appl. Energy Mater.

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“…These coatings are designed to have the maximum possible absorbance and minimum reflectance of the incident solar radiation while maintaining a minimum emittance value. Many materials were designed to closely meeting these specifications [3][4][5][6]. Among the promising materials investigated nickelpigmented aluminum oxide [7], nickel-aluminum (NiAl) alloy embedded into black paint [8], CrNxOy/SiO2 on Cu(Si) substrate deposited by DC reactive magnetron sputtering method [9], black chrome or carbon-coating [10] have been investigated showing advantageous solarthermal conversion characteristics for flat plate collector systems.…”

Section: Introductionmentioning

confidence: 99%

Improvement of the Solar-Thermal Characteristics of the Flat-Plate Collector Using a Composite Coating

Jasim

Al-Tabbakh

Hasan

2021

ANJS

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A commercially available matt black paint is used as the primary component of a composite coating for low-temperature flat collector systems. The composite coating is composed of the paint, carbon black powder (CBP) and lithium metal oxide (LMO) powder. The CBP and LMO powders are added on the top of the primary paint to improve the solar-thermal conversion characteristics of the collector. The optical and solar-thermal conversion characteristics of these coatings are investigated by means of optical microscopy, optical spectrophotometry, total reflectance measurement, and the measurement of the maximum collector temperature. Results show that the solar-thermal conversion response (maximum temperature) of the collector plate can be improved with the addition of the CBP and LMO powder at low concentrations. This is been demonstrated and discussed in this report. The coatings prepared in the present work can easily be applied on the collector surface and exhibit competing characteristics to other coatings.

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Advances in Corrosion‐Resistant Coatings

Zade,

Patil

2024

Functional Coatings

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Thermal Stability of Chromium-Iron Oxidation Mixture Cermet-Based Solar Selective Absorbing Coatings

Cited by 6 publications

References 28 publications

In Situ Oxidizing Commercial Alloy to Achieve Selective Solar Absorption with High-Temperature Stability

In Situ Oxidizing Commercial Alloy to Achieve Selective Solar Absorption with High-Temperature Stability

Improvement of the Solar-Thermal Characteristics of the Flat-Plate Collector Using a Composite Coating

Advances in Corrosion‐Resistant Coatings

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