Infrared radiation performance and calculation of B-site doped lanthanum aluminate from first principles

Liu, Qingsheng; Chang, Qing; Li, Jianglin; You, Zheng Jie; Jie, Peng; Chen, Jiangan

doi:10.1016/j.ceramint.2018.03.219

Cited by 25 publications

(4 citation statements)

References 25 publications

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“…The smaller the grain size, the greater the number of grain boundaries and the crystal defects, which is beneficial to the optical absorption of the sample. 19 The larger the lattice distortion, the poorer the symmetry of the crystal structure. The stronger the lattice vibration absorption, the more favorable the IR absorption properties of the material.…”

Section: Xrd Analysismentioning

confidence: 99%

Experiment and simulation of infrared emissivity properties of doped LaAlO₃

Liu

Cheng

2021

J Am Ceram Soc.

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In this study, LaAlO 3 doped with Sr/Co/Mn was prepared by sol-gel method, with its infrared (IR) radiative properties and variation mechanism investigated by X-ray powder diffraction, X-ray photoelectron spectroscopy, IR, scanning electron microscopy. Meanwhile, the electronic band structure was simulated by Cambridge Serial Total Energy Package. The conclusions are as follows: the order of emissivity in the near-IR band is La 0.

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Section: Xrd Analysismentioning

confidence: 99%

Experiment and simulation of infrared emissivity properties of doped LaAlO₃

Liu

Cheng

2021

J Am Ceram Soc.

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“…Thermal radiation technology has attracted worldwide attention for its superior advantage in energy-saving and heat dissipation applications, [1][2][3] especially served in the high-temperature field. In accordance with heat transfer theory, the radiation transfers heat occupies more than 80% when operating temperature is over 800 • C. 4 Hence, infrared radiation materials are used in high-temperature furnaces and aerospace vehicles to achieve the aim of energy-saving and heat dissipation, respectively. The emissivity is the crucial parameter to evaluate its performance during the service process, and a higher emissivity is desired.…”

Section: Introductionmentioning

confidence: 98%

New spinel‐structured high‐entropy oxides with high‐ and stable‐infrared radiation properties

Wan,

Zhang,

Xiong

2024

J Am Ceram Soc.

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Spinel‐structured high‐entropy oxides (HEOs), the novel materials, have recently attracted great attention for their unexpected properties and extensive applications. In this work, employing a facile scalability process of solid‐state reaction method, we synthesized a new kind of non‐equimolar (Co2/11Mn2/11Fe2/11Cr2/11Ni2/11Cu1/11)3O4 HEOs powder. However, under the same condition, the raw mixed oxide powders, with equimolar cations and higher configuration entropy, cannot form single‐phase HEOs powder but with the mixture of (Co,Mn,Fe,Cr,Ni,Cu)3O4 and residual CuO powders, ruling out the crucial role of entropy effect in forming single‐phase spinel‐structured HEOs. In addition to (Co2/11Mn2/11Fe2/11Cr2/11Ni2/11Cu1/11)3O4 powder, various (Co,Mn,Fe,Cr,Ni,Cu)3O4 HEOs powders can be obtained by controlling the Cu cation content in an appropriate range. To explore the application of the spinel‐structured HEOs in high‐temperature infrared field, the infrared radiation properties of the (Co2/11Mn2/11Fe2/11Cr2/11Ni2/11Cu1/11)3O4 powder were evaluated and exhibited a high‐infrared radiation emissivity of 0.880 in the near‐infrared wavelength range (0.78–2.5 µm) and superior thermal stability. Notably, the infrared radiation emissivity of the HEOs powder was maintained at 0.855 with a slight loss of 2.8% after high‐temperature treatment. This work not only provides a valuable strategy for fabricating high‐ and stable‐infrared radiation properties materials but also expands the great potential application of spinel‐structured HEOs to high‐temperature infrared field, such as energy saving in industrial high‐temperature furnaces.

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“…For example, they can be used in thermal furnaces to improve the efficiency of radiation heat transfer. [4][5][6][7] Infrared radiation materials such as SiC, SiB 6 , and cordierite have been applied to thermal equipment to improve their radiation heat transfer capacities at high temperatures. [8][9][10] However, these materials have two main drawbacks.…”

Section: Introductionmentioning

confidence: 99%

“…Thermal protective coatings with high emissivity can be applied not only to hypersonic vehicles but also to industrial furnaces. For example, they can be used in thermal furnaces to improve the efficiency of radiation heat transfer 4–7 . Infrared radiation materials such as SiC, SiB 6 , and cordierite have been applied to thermal equipment to improve their radiation heat transfer capacities at high temperatures 8–10 .…”

Section: Introductionmentioning

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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Infrared radiation performance and calculation of B-site doped lanthanum aluminate from first principles

Cited by 25 publications

References 25 publications

Experiment and simulation of infrared emissivity properties of doped LaAlO₃

Experiment and simulation of infrared emissivity properties of doped LaAlO₃

New spinel‐structured high‐entropy oxides with high‐ and stable‐infrared radiation properties

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

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Infrared radiation performance and calculation of B-site doped lanthanum aluminate from first principles

Cited by 25 publications

References 25 publications

Experiment and simulation of infrared emissivity properties of doped LaAlO3

Experiment and simulation of infrared emissivity properties of doped LaAlO3

New spinel‐structured high‐entropy oxides with high‐ and stable‐infrared radiation properties

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

Contact Info

Product

Resources

About

Experiment and simulation of infrared emissivity properties of doped LaAlO₃

Experiment and simulation of infrared emissivity properties of doped LaAlO₃

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