Study on spectral selective absorbing coatings with spinel structures fabricated via plasma spraying

Deng, Xianqiang; Xue, Mingming; Lv, Yilin; Li, Runhao; Tong, Jin-meng; Shi, Guang-hong; Yang, Yong; Yao, Dong

doi:10.1016/j.vacuum.2020.109214

Cited by 10 publications

(9 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Thermal spray processes have been adopted to deposit other material systems, e.g., perovskite oxide (La 1−x Sr x TiO 3+δ ) [37], spinel structures [38], and Ni-Al alloys [39]. Zhu et al [37] observed that, concerning perovskite, the rate of oxidation occurred during the deposition and the oxygen content in the coating, which in turn depends on the plasma power, thus influencing the reflectivity of material in the UV-visible-IR spectral range.…”

Section: Thermal Spray Processes For Selective Absorbermentioning

confidence: 99%

“…Spinel coatings are usually produced by dip coating or wet coating (such as electroplating, spraying, or roll-coating [41]) that can deposit them without altering their composition or chemical structure. Deng et al [38] investigated the production of spinel coating by means of plasma spray of vanadium tailings (VT). The high temperatures involved in the deposition process together with the oxygen-rich atmosphere promoted the reaction of feedstock particles and led to the formation of AlVO3 and Mg 2 VO 4 spinel structures and Fe 3 O 4 and MnO 3 oxides.…”

Section: Thermal Spray Processes For Selective Absorbermentioning

confidence: 99%

“…where ∆α and ∆ε are the variation in absorptance and thermal emittance after the heat treatment, and PC must be less than 5% (PC < 0.05) for the absorber surface to be acceptable. Thermal spray processes have proved to be a viable solution to produce coatings that can be competitive with Pyromark paint [24,25,33,34,38]. However, many materials that are commonly used in solar applications are not suitable for deposition with thermal spray and do not represent a valid alternative; for example, pure alumina or WC-based coatings achieve low optical performance in as-sprayed conditions.…”

Section: Thermal Spray Processes For Selective Absorbermentioning

confidence: 99%

See 2 more Smart Citations

Thermal Spray Processes in Concentrating Solar Power Technology

Rubino

Poza

Pasquino

et al. 2021

Metals

View full text Add to dashboard Cite

Solar power is a sustainable and affordable source of energy, and has gained interest from academies, companies, and government institutions as a potential and efficient alternative for next-generation energy production. To promote the penetration of solar power in the energy market, solar-generated electricity needs to be cost-competitive with fossil fuels and other renewables. Development of new materials for solar absorbers able to collect a higher fraction of solar radiation and work at higher temperatures, together with improved design of thermal energy storage systems and components, have been addressed as strategies for increasing the efficiency of solar power plants, offering dispatchable energy and adapting the electricity production to the curve demand. Manufacturing of concentrating solar power components greatly affects their performance and durability and, thus, the global efficiency of solar power plants. The development of viable, sustainable, and efficient manufacturing procedures and processes became key aspects within the breakthrough strategies of solar power technologies. This paper provides an outlook on the application of thermal spray processes to produce selective solar absorbing coatings in solar tower receivers and high-temperature protective barriers as strategies to mitigate the corrosion of concentrating solar power and thermal energy storage components when exposed to aggressive media during service life.

show abstract

Section: Thermal Spray Processes For Selective Absorbermentioning

confidence: 99%

Section: Thermal Spray Processes For Selective Absorbermentioning

confidence: 99%

Section: Thermal Spray Processes For Selective Absorbermentioning

confidence: 99%

See 1 more Smart Citation

Thermal Spray Processes in Concentrating Solar Power Technology

Rubino

Poza

Pasquino

et al. 2021

Metals

View full text Add to dashboard Cite

show abstract

“…The use of metallic dispersions helps increase complex permittivity and permeability in dielectric matrix composites. Due to the high thermal and oxidation resistance of spinel (oxides), recently, Deng et al [13] studied plasma-sprayed vanadium tailings deposited onto stainless-steel substrate with Ni/Al bond layer. Vanadium tailings are composed of oxides of Fe, Cr, Mn, V, Ti, and other transition metals and are a by-product of steel manufacturing.…”

Section: Introductionmentioning

confidence: 99%

Large-scale manufacturing route to metamaterial coatings using thermal spray techniques and their response to solar radiation

et al. 2021

View full text Add to dashboard Cite

Metamaterials, an artificial periodic two- or three-dimensional configuration, can change propagation characteristics of electromagnetic waves (i.e., reflection, transmission, absorption). The current challenges in the field of metamaterial coatings are their manufacturing in a large-scale and large-length scale. There is a clear need to enhance process technologies and scalability of these. Thermal spraying is a method used to deposit small- to large-scale coatings where the sprayed layer is typically formed by the successive impact of fully or partially molten particles of a material exposed to various process conditions. This work aims to investigate the feasibility to manufacture large scale metamaterial coatings using the thermal spray technique and examine their response to solar radiation. Two types of coatings namely, Cr2O3 and TiO2, were deposited onto various substrates (e.g., steel, aluminium, glass, indium tin oxide (ITO)–coated glass) with a fine wire mesh (143 µm and 1 mm aperture sizes) as the masking sheet to manipulate the surface pattern using suspension high-velocity oxy-fuel thermal spraying (S-HVOF) and atmospheric plasma-sprayed (APS) methods, respectively. Post deposition, their responses subjected to electromagnetic wave (between 250 and 2500 nm or ultraviolet (UV)-visible (Vis)-infrared (IR) region) were characterised. The additional microstructural characterisation was performed using scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), X-ray diffraction (XRD), three-dimensional profilometry, and optical spectroscopy. It is demonstrated that through novel application of thermal spray techniques, large-scale manufacturing of metamaterial coating is possible, and such material can affect electromagnetic wave propagation. Comparison between Cr2O3 and TiO2 coatings on aluminium substrates showed reduced three orders of reduced reflectance for Cr2O3 coatings (for 1-mm aperture size) throughout the spectrum. It was concluded that for a similar bandgap, Cr2O3 coatings on aluminium substrate will yield improved optical performance than TiO2 coating, and hence more useful to fabricate opto-electronic devices. Graphical abstract

show abstract

“…According to the different components involved, coatings are classified into: FeO-MnO 2 series, Al2O 3 -SiO 2 series, ZrO 2 series, CoO series, CrO 2 series, cordierite series and SiC series [29,[33][34][35][36][37][38][39][40][41]. After conducting research on the different series, researchers have found that materials with spinel structures have higher infrared emissivity than other materials [42][43][44]. Although the theoretical basis for the application of infrared radiation has progressed to date, the composition of the coating still depends on experimentation.…”

Section: Introductionmentioning

confidence: 99%

A Novel Optimization Model and Application of Optimal Formula Design for CuxCo1−xFe2O4 Spinel-Based Coating Slurry in Relation to Near and Middle Infrared Radiation Strengthening

Zhang

et al. 2020

Materials

View full text Add to dashboard Cite

Coating slurry, in which the infrared radiation material is the main content, is applied in industrial furnaces to improve heat transfer and raise efficiency of furnaces. In this study, a Cu x Co 1 − x Fe 2 O 4 series material with a spinel structure was prepared, and the emissivity of different formulas in two wavebands (3–5 μm and 8–14 μm) was measured. To ensure that the material delivered high emissivity, optimization models were proposed using Matlab software, and proportions of CuO, Co2O3 and Fe2O3 were found to be 16.98%, 16.73% and 66.29%, respectively, in the optimal formula. Thus, using the Cu x Co 1 − x Fe 2 O 4 series material and additives, according to mixture regression method, fifteen formulas of coating slurry were designed, prepared and the emissivities were measured. With the Matlab software optimization model, the content of coating slurry was optimized and the corresponding emissivities were measured to be 0.931 and 0.905 in two wavebands, which is in agreement with the optimized calculation.

show abstract

Study on spectral selective absorbing coatings with spinel structures fabricated via plasma spraying

Cited by 10 publications

References 27 publications

Thermal Spray Processes in Concentrating Solar Power Technology

Thermal Spray Processes in Concentrating Solar Power Technology

Large-scale manufacturing route to metamaterial coatings using thermal spray techniques and their response to solar radiation

A Novel Optimization Model and Application of Optimal Formula Design for CuxCo1−xFe2O4 Spinel-Based Coating Slurry in Relation to Near and Middle Infrared Radiation Strengthening

Contact Info

Product

Resources

About