The effect of Mg2+ doping on the infrared emissivity of LaCrO3 perovskites

Mingyu Meng; Ling Liu; Yanbo Liu; Zhuang Ma

doi:10.1016/j.ceramint.2023.01.082

The effect of Mg²⁺ doping on the infrared emissivity of LaCrO₃ perovskites

Mingyu Meng, Ling Liu^*, Yanbo Liu^*, Zhuang Ma

^*Corresponding author for this work

School of Material Science and Engineering

Beijing Institute of Technology

Research output: Contribution to journal › Article › peer-review

7 Citations (Scopus)

Abstract

The infrared high emissivity ceramic material plays an important role in thermal protection of hypersonic vehicles. LaCrO₃, characterized by excellent thermal stability and high emissivity, can be applied as infrared high emissivity material. LaCrO₃ and Mg²⁺ doped LaCrO₃ were prepared via solid state reaction method. XRD analyses showed that LaCr_1-xMg_xO₃ (x = 0, 0.1, 0.2, 0.25, 0.3) were single-phase solid solutions. The doping-effect of Mg²⁺ on the infrared emissivity was investigated. In the range of 2.5–8 μm, the infrared emissivity of all doped materials had significant improvement, the average emissivity of materials increased from 0.66 to 0.83. In the range above 8 μm, the emissivity of all materials had a similar trend and compared to LaCrO₃, the emissivity of Mg²⁺ doped LaCrO₃ had little decrease.

Original language	English
Pages (from-to)	14997-15002
Number of pages	6
Journal	Ceramics International
Volume	49
Issue number	10
DOIs	https://doi.org/10.1016/j.ceramint.2023.01.082
Publication status	Published - 15 May 2023

Keywords

Infrared emissivity
LaCrO
Mg doping

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10.1016/j.ceramint.2023.01.082

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title = "The effect of Mg2+ doping on the infrared emissivity of LaCrO3 perovskites",

abstract = "The infrared high emissivity ceramic material plays an important role in thermal protection of hypersonic vehicles. LaCrO3, characterized by excellent thermal stability and high emissivity, can be applied as infrared high emissivity material. LaCrO3 and Mg2+ doped LaCrO3 were prepared via solid state reaction method. XRD analyses showed that LaCr1-xMgxO3 (x = 0, 0.1, 0.2, 0.25, 0.3) were single-phase solid solutions. The doping-effect of Mg2+ on the infrared emissivity was investigated. In the range of 2.5–8 μm, the infrared emissivity of all doped materials had significant improvement, the average emissivity of materials increased from 0.66 to 0.83. In the range above 8 μm, the emissivity of all materials had a similar trend and compared to LaCrO3, the emissivity of Mg2+ doped LaCrO3 had little decrease.",

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author = "Mingyu Meng and Ling Liu and Yanbo Liu and Zhuang Ma",

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AU - Meng, Mingyu

AU - Liu, Ling

AU - Liu, Yanbo

AU - Ma, Zhuang

PY - 2023/5/15

Y1 - 2023/5/15

N2 - The infrared high emissivity ceramic material plays an important role in thermal protection of hypersonic vehicles. LaCrO3, characterized by excellent thermal stability and high emissivity, can be applied as infrared high emissivity material. LaCrO3 and Mg2+ doped LaCrO3 were prepared via solid state reaction method. XRD analyses showed that LaCr1-xMgxO3 (x = 0, 0.1, 0.2, 0.25, 0.3) were single-phase solid solutions. The doping-effect of Mg2+ on the infrared emissivity was investigated. In the range of 2.5–8 μm, the infrared emissivity of all doped materials had significant improvement, the average emissivity of materials increased from 0.66 to 0.83. In the range above 8 μm, the emissivity of all materials had a similar trend and compared to LaCrO3, the emissivity of Mg2+ doped LaCrO3 had little decrease.

AB - The infrared high emissivity ceramic material plays an important role in thermal protection of hypersonic vehicles. LaCrO3, characterized by excellent thermal stability and high emissivity, can be applied as infrared high emissivity material. LaCrO3 and Mg2+ doped LaCrO3 were prepared via solid state reaction method. XRD analyses showed that LaCr1-xMgxO3 (x = 0, 0.1, 0.2, 0.25, 0.3) were single-phase solid solutions. The doping-effect of Mg2+ on the infrared emissivity was investigated. In the range of 2.5–8 μm, the infrared emissivity of all doped materials had significant improvement, the average emissivity of materials increased from 0.66 to 0.83. In the range above 8 μm, the emissivity of all materials had a similar trend and compared to LaCrO3, the emissivity of Mg2+ doped LaCrO3 had little decrease.

KW - Infrared emissivity

KW - LaCrO

KW - Mg doping

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JO - Ceramics International

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IS - 10

ER -

The effect of Mg²⁺ doping on the infrared emissivity of LaCrO₃ perovskites

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Keywords

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