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Effect of Molar Ratio of Ca2+ and Co2+ on Infrared Radiation Properties of Co-doped LaAlO3 Ceramics
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Xueqing WANG1, Qinghu WANG1, Xiong LIANG1, Yibiao XU1, Tianbin ZHU1, Shaobai SANG1, Yawei LI1, Yixiang CHEN2, Yong LI2, Jiangtao LI2
Journal of the Chinese Ceramic Society | 2022, 50(9) : 2380 - 2387
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Journal of the Chinese Ceramic Society | 2022, 50(9): 2380-2387
• Research Articles •
Effect of Molar Ratio of Ca2+ and Co2+ on Infrared Radiation Properties of Co-doped LaAlO3 Ceramics
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Xueqing WANG1, Qinghu WANG1, Xiong LIANG1, Yibiao XU1, Tianbin ZHU1, Shaobai SANG1, Yawei LI1, Yixiang CHEN2, Yong LI2, Jiangtao LI2
Affiliations
  • 1.Wuhan University of Science and Technology, The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, National-provincial Joint Engineering Research Center of High Temperature Materials and Lining Technology, Wuhan 430081, China
  • 2.Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China

    • WANG Xueqing (1997-), female, Master candidate. E-mail:

About Author:

WANG Xueqing (1997-), female, Master candidate. E-mail:

Published: 2022-09-20 doi: 10.14062/j.issn.0454-5648.20220016
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n(Ca2+)/n(Co2+)(n is mole) co-doped LaAlO3 ceramics were synthesized by a solid-phase reaction technique. The effect of n(Ca2+)/nCo2+ doping ratio on the infrared radiation performance of LaAlO3 ceramics (La1-xCaxAl0.8Co0.2O3, 0.25≤n(Ca2+)/n(Co2+)≤2.00) was investigated, and the mechanism for improving infrared radiation property was analyzed. The result reveals that n(Ca2+)/n(Co2+) co-doped LaAlO3 ceramics have a perovskite crystal structure. Increasing the doping ratio (0.25≤n(Ca2+)/n(Co2+)≤1.00) improves the emissivity in the wavelength range of 0.76-2.50 μm. The ceramic specimen with n(Ca2+)/n(Co2+) of 1.00 (La0.8Ca0.2Al0.8Co0.2O3) has the maximum average emissivity (0.87). In the 2.50-14.0 μm band, the average emissivity of all n(Ca2+)/n(Co2+) co-doped LaAlO3 ceramics is generally greater than 0.94. The improvement of emissivity can be attributed to the enhancement of free carrier absorption, impurity absorption and lattice vibration absorption. This novel infrared ceramic with a high emissivity has promising prospects for energy-saving applications of thermal equipment.

lanthanum aluminate ceramics  /  calcium and cobalt co-doping  /  infrared radiation property  /  emissivity
王雪晴, 王庆虎, 梁雄, 徐义彪, 朱天彬, 桑绍柏, 李亚伟, 陈义祥, 李永, 李江涛. Ca2+和Co2+摩尔比对共掺杂LaAlO3陶瓷红外辐射性能的影响. 硅酸盐学报, 2022 , 50 (9) : 2380 -2387 . DOI: 10.14062/j.issn.0454-5648.20220016
Xueqing WANG, Qinghu WANG, Xiong LIANG, Yibiao XU, Tianbin ZHU, Shaobai SANG, Yawei LI, Yixiang CHEN, Yong LI, Jiangtao LI. Effect of Molar Ratio of Ca2+ and Co2+ on Infrared Radiation Properties of Co-doped LaAlO3 Ceramics[J]. Journal of the Chinese Ceramic Society, 2022 , 50 (9) : 2380 -2387 . DOI: 10.14062/j.issn.0454-5648.20220016
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Year 2022 volume 50 Issue 9
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Article Info
doi: 10.14062/j.issn.0454-5648.20220016
  • Receive Date：2022-01-16
  • Online Date：2026-10-20
  • Published：2022-09-20
Article Data
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History
  • Received：2022-01-16
  • Revised：2022-01-28
Funding
Affiliations
    1.Wuhan University of Science and Technology, The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, National-provincial Joint Engineering Research Center of High Temperature Materials and Lining Technology, Wuhan 430081, China
    2.Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China

Corresponding:

WANG Qinghu (1985-), male, Ph.D., Associate Professor. E-mail:
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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