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Preparation and Formation Mechanism of Aluminum Oxycarbides by Carbothermal Reduction in Vacuum
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Yuebin FENG, Jinhui LI, Mengyang ZHANG, Baomin YANG
Journal of the Chinese Ceramic Society | 2022, 50(3) : 791 - 797
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Journal of the Chinese Ceramic Society | 2022, 50(3): 791-797
• Research Articles •
Preparation and Formation Mechanism of Aluminum Oxycarbides by Carbothermal Reduction in Vacuum
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Yuebin FENG, Jinhui LI, Mengyang ZHANG, Baomin YANG
Affiliations
  • College of Science, Kunming University of Science and Technology, Kunming 650500, China

    • FENG Yuebin (1970-), female, Ph.D., Professor. E-mail:

About Author:

FENG Yuebin (1970-), female, Ph.D., Professor. E-mail:

Published: 2022-03-20 doi: 10.14062/j.issn.0454-5648.20210394
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Aluminum oxycarbides were prepared via a carbothermal reduction of alumina in vacuum at 1 300 - 1 500 ℃. The results indicate that the temperature required for the formation of aluminum oxycarbides from the carbothermal reduction of alumina in vacuum is lower than that in argon, a large amount of Al4O4C can be formed at 1 300 ℃, and the main component of the condensation products is Al4O4C, which is independent of the reaction extent of the raw materials. The condensation products consisting mainly of Al4O4C with a small amount of Al4C3 can be obtained under optimum conditions (i.e., n(α-Al2O3)∶n(C) of 2∶3, reaction temperature of 1 400 ℃ and reaction time of 20 min). It is confirmed that Al4O4C can be formed in two stages, i.e., alumina reacts with carbon to generate the gases containing aluminum Al2O, Al and CO at higher temperatures, and the condensates mainly consisting of Al4O4C form at lower temperatures.

vacuum  /  carbothermal reduction  /  aluminum oxycarbides  /  gases containing aluminum
冯月斌, 李金会, 张梦阳, 杨保民. 真空下碳热还原法制备碳氧化铝及其形成机制. 硅酸盐学报, 2022 , 50 (3) : 791 -797 . DOI: 10.14062/j.issn.0454-5648.20210394
Yuebin FENG, Jinhui LI, Mengyang ZHANG, Baomin YANG. Preparation and Formation Mechanism of Aluminum Oxycarbides by Carbothermal Reduction in Vacuum[J]. Journal of the Chinese Ceramic Society, 2022 , 50 (3) : 791 -797 . DOI: 10.14062/j.issn.0454-5648.20210394
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Year 2022 volume 50 Issue 3
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doi: 10.14062/j.issn.0454-5648.20210394
  • Receive Date：2021-05-16
  • Online Date：2026-10-22
  • Published：2022-03-20
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  • Received：2021-05-16
  • Revised：2021-06-04
Affiliations
    College of Science, Kunming University of Science and Technology, Kunming 650500, China
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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
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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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