协同掺杂MnO2与CeO2对钙钛矿类LaAlO3陶瓷显微结构与红外辐射性能的影响

doi:10.11896/cldb.21030158

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Abstract In this work, La_0.8Ce_0.2Mn_xAl_1-xO₃ (x=0, 0.15, 0.3, 0.45, 0.6) perovskite infrared ceramics were prepared through solid-state reaction. The effect of co-doping MnO₂ and CeO₂ on the phase change, microstructure and infrared radiation characteristics of LaAlO₃ perovskite ceramics were studied. The results show that the infrared radiation performance of the samples was improved with the increase of the MnO₂ content, when the amount of CeO₂ was fixed. The infrared emissivity of La_0.8Ce_0.2AlO₃ in the control group and La_0.8Ce_0.2Mn_0.6Al_0.4O₃ in the best performance group increased from 0.596 to 0.909 in the far infrared band range of 8—14 μm, increasing by 52.5%. It is proved that the co-doping of MnO₂ and CeO₂ can change the ion distribution state in LaAlO₃ crystal structure, enhance the asymmetric vibration intensity of the link bond and finally effectively improve the far-infrared radiation performance of LaAlO₃ ceramics.

Key words： coordinated doping LaAlO₃ infrared radiation emissivity

Published: 25 August 2022 Online: 2022-08-29

CLC number:

TQ171

Fund:University-level Project of Jincheng College of Sichuan University(2020jcky0014).

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	Articles by authors
	WANG Bozhi
	SUN Weiyi
	JIAN Tao
	ZHANG Yunwei
	WU Kaixia
	LI Sanyan

Cite this article:

WANG Bozhi,SUN Weiyi,JIAN Tao, et al. Effect of Co-doping MnO₂ and CeO₂ on Microstructure and Infrared Radiation Performance of Perovskite LaAlO₃ Ceramics[J]. Materials Reports, 2022, 36(16): 21030158-4.

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http://www.mater-rep.com/EN/10.11896/cldb.21030158 OR http://www.mater-rep.com/EN/Y2022/V36/I16/21030158

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