High‐entropy La(Fe 0.2 Co 0.2 Ni 0.2 Cr 0.2 Mn 0.2 )O 3 ceramic exhibiting high emissivity and low thermal conductivity

Qu Wang; Qi Zhang; Gang Wang; Yifan Zhang; Miao Xia

doi:10.1111/ijac.14183

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High‐entropy La(Fe _0.2 Co _0.2 Ni _0.2 Cr _0.2 Mn _0.2 )O ₃ ceramic exhibiting high emissivity and low thermal conductivity

Qu Wang Qi Zhang Gang Wang Yifan Zhang Miao Xia

Year: 2022 Journal: International Journal of Applied Ceramic Technology Vol: 19 (6)Pages: 2963-2966 Publisher: Wiley

DOI: 10.1111/ijac.14183

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Abstract

Abstract A novel, high‐entropy, perovskite‐structured, solid solution La(Fe 0.2 Co 0.2 Ni 0.2 Cr 0.2 Mn 0.2 )O 3 ceramic was successfully synthesized via high‐temperature solid‐state reaction. The crystal structure, microstructure, infrared emissivity, and thermophysical properties were investigated. The experimental results indicated that La(Fe 0.2 Co 0.2 Ni 0.2 Cr 0.2 Mn 0.2 )O 3 exhibited an infrared emissivity as high as .92 in the near‐infrared region of .76–2.50 μm. The thermal conductivity was 1.38–1.72 W m −1 K −1 in the temperature range of 25–1200°C.

Keywords:

Materials science Emissivity Infrared Microstructure Analytical Chemistry (journal) Ceramic Atmospheric temperature range Perovskite (structure) Solid solution Crystal structure Physical chemistry Mineralogy Crystallography Metallurgy Thermodynamics Physics Optics Chemistry

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High Entropy Alloys Studies

Physical Sciences → Engineering → Mechanical Engineering

Ferroelectric and Piezoelectric Materials

Physical Sciences → Materials Science → Materials Chemistry

High-Temperature Coating Behaviors

Physical Sciences → Engineering → Aerospace Engineering

High‐entropy La(Fe _0.2 Co _0.2 Ni _0.2 Cr _0.2 Mn _0.2 )O ₃ ceramic exhibiting high emissivity and low thermal conductivity

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