The effect of microstructure on the middle and short waveband emissivity of CuO-doped CuxCo1-xFe2O4 spinel

Zhang, Jian; Bai, Hao; Wei, Wei; Ding, Yuhao; Zhang, Xu; Yuan, Huanmei; Zhang, Zefei

doi:10.1016/j.jallcom.2019.02.119

Cited by 32 publications

(11 citation statements)

References 48 publications

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“…Noteworthy, the average emissivity of BVG (7.4 µm)/Ni–Cr is ≈0.98 in the 3−5 µm wavelength range, which overcomes the challenge of the low emissivity in short waveband for traditional infrared radiation coatings. [ 15,40 ] In this section, we therefore revealed the blackbody‐like behavior of the BVG layer with a nearly wavelength‐independent emission/absorption across a wide wavelength range.…”

Section: Resultsmentioning

confidence: 83%

Bush‐Shaped Vertical Graphene/Nichrome Wire for Blackbody‐Like Radiative Heating

Wang

Cheng

Yang

et al. 2022

Adv Funct Materials

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Radiative thermal management has attracted increasing attention for the advantages of energy saving and carbon emission reduction. Infrared radiation coatings are widely adopted to alleviate the low infrared emissivity of commonly used metal alloy electrothermal materials. However, traditional infrared radiation coatings are faced with the issues of the unsteady waveband emissivity, low interfacial adhesion to substrates, and poor long-term thermal stability. Herein, a bush-shaped vertical graphene (BVG) grown on nichrome (Ni-Cr) wire is demonstrated, relying on which BVG/Ni-Cr wire presents a high blackbody-like emissivity of ≈0.96 across a wide wavelength range (2.5-18 µm). When used for radiative heating, BVG/Ni-Cr wire achieves a high thermal radiation efficiency with an order of magnitude improvement compared with bare Ni-Cr wire, as well as the superior deformation and thermal stabilities. These findings reveal the impressive potentials of BVG as an excellent infrared radiation material for the energy-efficient radiative thermal management.

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Section: Resultsmentioning

confidence: 83%

Bush‐Shaped Vertical Graphene/Nichrome Wire for Blackbody‐Like Radiative Heating

Wang

Cheng

Yang

et al. 2022

Adv Funct Materials

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“…Analytical grade Co 2 O 3 (99.99%), CuO (99.99%) and Fe 2 O 3 (99.99%) powders were purchased from Shanghai Aladdin Bio-Chem Technology Co., LTD (Shanghai, China)) and used as raw materials to prepare Cu x Co 1−x Fe 2 O 4 . The varying formulas of Cu x Co 1−x Fe 2 O 4 were designed according to different Cu doped ratios (mol%), and the molar content of CuO was regarded as being theoretically proportional to the content of the solid solution [22]. The formula design is shown in Table 1.…”

Section: Methodsmentioning

confidence: 99%

“…Xiaoyan Wu et al [21], developed the highest infrared emissivity (0.92 ± 0.01) and (0.95 ± 0.01) in 8-14 µm after doping Ce 3+ and Y 3+ from CoFe 2 O 4 in which the maximum lattice strain (0.341%) and (4.40%) occurred after sintering at 600 °C. Jian Zhang et al [22], utilized transition metal ions (Cu 2+ , Co 3+ , Ni 2+ and Zn 2+ ) to dope and co-dope in Fe 3 O 4 spinel ferrite by sintering process and the results show that the radiation emissivity in 3-5 µm and 8-14 µm can be increased above 0.9 at 600 °C. These deferent emissivities are mainly determined by the chemical composition and crystal structure of the infrared radiation materials [23].…”

Section: Introductionmentioning

confidence: 99%

“…It is thus considered that effective methods and theories are required to design a formula for the coating that optimizes its infrared radiation performance. In this paper, a series of Cu x Co 1−x Fe 2 O 4 solid solutions with a spinel structure was developed to effectively improve emissivity [22]. The Cu x Co 1−x Fe 2 O 4 series material with infrared radiation coating was prepared in a laboratory, and the emissivity was then measured.…”

Section: Introductionmentioning

confidence: 99%

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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

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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.

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“…21,22 It is well known that emissivity in the NIR region of 0.76−2.5 μm is related to the band gap. 15,23 According to the Kubelka-Munk function, the band gap can be calculated using the following equation 24 :…”

Section: F I G U R Ementioning

confidence: 99%

Preparation of environmentally friendly high‐emissivity Ca²⁺‐Fe³⁺ co‐doped LaAlO₃ ceramic

Wang¹,

Yan²,

Dong

et al. 2023

Int J Applied Ceramic Tech

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Ca 2+ -Cr 3+ co-doped LaAlO 3 is an excellent ceramic material with high emissivity; however, it is harmful to the environment because of the presence of Cr 3+ ions. In this study, Ca 2+ -Fe 3+ co-doped LaAlO 3 ceramic materials were successfully prepared via a high-temperature solid-state reaction. The emissivity of Ca 2+ -Fe 3+ co-doped LaAlO 3 was 0.91, which is approximately equal to that of Ca 2+ -Cr 3+ co-doped LaAlO 3 . To compensate for the lack of data on the thermophysical properties of doped LaAlO 3 high-emissivity ceramics, the thermal expansion coefficients and thermal conductivities of LaAlO 3 doped with Ca 2+ -Fe 3+ or Ca 2+ -Cr 3+ were investigated. The thermal conductivities of La 0.

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The effect of microstructure on the middle and short waveband emissivity of CuO-doped CuxCo1-xFe2O4 spinel

Cited by 32 publications

References 48 publications

Bush‐Shaped Vertical Graphene/Nichrome Wire for Blackbody‐Like Radiative Heating

Bush‐Shaped Vertical Graphene/Nichrome Wire for Blackbody‐Like Radiative Heating

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

Preparation of environmentally friendly high‐emissivity Ca²⁺‐Fe³⁺ co‐doped LaAlO₃ ceramic

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The effect of microstructure on the middle and short waveband emissivity of CuO-doped CuxCo1-xFe2O4 spinel

Cited by 32 publications

References 48 publications

Bush‐Shaped Vertical Graphene/Nichrome Wire for Blackbody‐Like Radiative Heating

Bush‐Shaped Vertical Graphene/Nichrome Wire for Blackbody‐Like Radiative Heating

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

Preparation of environmentally friendly high‐emissivity Ca2+‐Fe3+ co‐doped LaAlO3 ceramic

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Product

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About

Preparation of environmentally friendly high‐emissivity Ca²⁺‐Fe³⁺ co‐doped LaAlO₃ ceramic