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Preparation and Properties of Ca2+ and Cr3+ Co-doped LaAlO3 Ceramics
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Qu WANG, Gang WANG, Jianshen HAN, Xin ZHAO, Qi ZHANG, Wei ZHANG
Journal of the Chinese Ceramic Society | 2020, 48(6) : 908 - 912
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Journal of the Chinese Ceramic Society | 2020, 48(6): 908-912
• Research Paper •
Preparation and Properties of Ca2+ and Cr3+ Co-doped LaAlO3 Ceramics
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Qu WANG, Gang WANG, Jianshen HAN, Xin ZHAO, Qi ZHANG, Wei ZHANG
Affiliations
  • State Key Laboratory of Advanced Refractories, Sinosteel luoyang institute of refractories research co.,ltd, Luoyang 471039, Henan, China

    • WANG Qu (1994-), male, Master candidate. E-mail:

About Author:

WANG Qu (1994-), male, Master candidate. E-mail:

Published: 2020-06-20 doi: 10.14062/j.issn.0454-5648.20190563
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Pure LaAlO3 and Ca2+-Cr3+ co-doped LaAlO3 ceramic materials were prepared via a high-temperature solid-state reaction in air atmosphere. Their near-infrared (NIR) emissivity and thermal conductivity were investigated. The results reveal that 20% Ca2+ and 20% Cr3+ co-doped LaAlO3, namely La0.8Ca0.2Al0.8Cr0.2O3, has a greater NIR emissivity of 0.92 in the wavelength range of 0.76-2.50 μm, which is 300% greater than that of pure LaAlO3. The thermal conductivity of LaAlO3 can be reduced by Ca2+-Cr3+ co-doping. The minimum thermal conductivities of LaAlO3 and La0.8Ca0.2Al0.8Cr0.2O3 both appear at 1 200 ℃, and the minimum thermal conductivity of La0.8Ca0.2Al0.8Cr0.2O3 is 2.602 W·m-1·K-1, which is 38% lower than that of pure LaAlO3.

lanthanum aluminate  /  infrared emissivity  /  co-doping  /  ceramic material
王曲, 王刚, 韩建燊, 赵鑫, 张琪, 张伟. Ca2+-Cr3+共掺杂LaAlO3陶瓷的制备及性能. 硅酸盐学报, 2020 , 48 (6) : 908 -912 . DOI: 10.14062/j.issn.0454-5648.20190563
Qu WANG, Gang WANG, Jianshen HAN, Xin ZHAO, Qi ZHANG, Wei ZHANG. Preparation and Properties of Ca2+ and Cr3+ Co-doped LaAlO3 Ceramics[J]. Journal of the Chinese Ceramic Society, 2020 , 48 (6) : 908 -912 . DOI: 10.14062/j.issn.0454-5648.20190563
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Year 2020 volume 48 Issue 6
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Article Info
doi: 10.14062/j.issn.0454-5648.20190563
  • Receive Date：2019-08-12
  • Online Date：2026-10-29
  • Published：2020-06-20
Article Data
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History
  • Received：2019-08-12
  • Revised：2019-12-10
Funding
Affiliations
    State Key Laboratory of Advanced Refractories, Sinosteel luoyang institute of refractories research co.,ltd, Luoyang 471039, Henan, China

Corresponding:

WANG Gang (1972-), male, Ph.D., Professorate senior Engineer. 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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