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Phase Composition and Reaction Mechanism of Aluminum-Spinel Composite at 1 700℃ in Flowing Nitrogen
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Mingwei YAN1, 2, Yumin YANG3, Yong LI4, Kaiqi LIU1, 2, Guangchao SUN1, 2, Jiayu ZHANG1, Chaoquan HU2
Journal of the Chinese Ceramic Society | 2021, 49(3) : 590 - 596
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Journal of the Chinese Ceramic Society | 2021, 49(3): 590-596
Phase Composition and Reaction Mechanism of Aluminum-Spinel Composite at 1 700℃ in Flowing Nitrogen
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Mingwei YAN1, 2, Yumin YANG3, Yong LI4, Kaiqi LIU1, 2, Guangchao SUN1, 2, Jiayu ZHANG1, Chaoquan HU2
Affiliations
  • 1.State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
  • 2.Nanjing IPE Institute of Green Manufacturing Industry, Nanjing 211135, China
  • 3.Avic Tianshui New & High Abrasives Co., Ltd., Tianshui 741024, China
  • 4.School of Materials Science and Engineering, University of Science and Technology, Beijing 100083, China

    • YAN Mingwei (1989-), male, Postdoctor. E-mail:

About Author:

YAN Mingwei (1989-), male, Postdoctor. E-mail:

Published: 2021-03-20 doi: 10.14062/j.issn.0454-5648.20200450
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The phase composition and reaction mechanism of aluminum-spinel (Al-MgAl2O4) composite were investigated after being treated at 580℃ for 8 h and 1 700℃ for 3 h in flowing high purity nitrogen. The results show that after being treated at 580℃ for 8 h, the Al-MgAl2O4 composite forms an area phenomenon with the aluminum-aluminum nitride (Al-AlN) core-shell structure in the outside area. When the temperature increases up to a critical value, the Al-AlN core-shell structure in the outside area breaks, Al(l/g) reacts with N2 to form AlN and with O2 to form Al2O(g). This process prompts formation of an MgAl2O4 spinel with stoichiometric ratio that allows decomposition into Al2O3-rich spinel and Mg(g). On the one hand, AlN reacts with Al2O3-rich spinel to form MgAlON spinel, and on the other hand, AlN is transformed into (Mg,Al)(N,O) through the solid solution reaction of Mg(g) and O2(g) into AlN. Phase composition of the inside area is different from the outside area in which MgAlON with flake crystal morphology forms via a gas-gas phase reaction: Al2O(g)+O2(g)+N2(g)+Mg(g)→MgAlON(s) or Al(g)+O2(g)+N2(g)+Mg(g)→MgAlON(s) in which Al2O3-rich spinel doesn't further form MgAlON spinel.

core-shell structure  /  aluminum oxide-rich spinel  /  magnesium aluminum oxynitride  /  aluminum nitride solid solution
闫明伟, 杨裕民, 李勇, 刘开琪, 孙广超, 张佳钰, 胡超权. 1 700℃流动氮气下金属铝-镁铝尖晶石复合材料的物相组成与反应机理. 硅酸盐学报, 2021 , 49 (3) : 590 -596 . DOI: 10.14062/j.issn.0454-5648.20200450
Mingwei YAN, Yumin YANG, Yong LI, Kaiqi LIU, Guangchao SUN, Jiayu ZHANG, Chaoquan HU. Phase Composition and Reaction Mechanism of Aluminum-Spinel Composite at 1 700℃ in Flowing Nitrogen[J]. Journal of the Chinese Ceramic Society, 2021 , 49 (3) : 590 -596 . DOI: 10.14062/j.issn.0454-5648.20200450
Appendix
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Year 2021 volume 49 Issue 3
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Article Info
doi: 10.14062/j.issn.0454-5648.20200450
  • Receive Date：2020-06-22
  • Online Date：2026-10-30
  • Published：2021-03-20
Article Data
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History
  • Received：2020-06-22
  • Revised：2020-07-11
Funding
Affiliations
    1.State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
    2.Nanjing IPE Institute of Green Manufacturing Industry, Nanjing 211135, China
    3.Avic Tianshui New & High Abrasives Co., Ltd., Tianshui 741024, China
    4.School of Materials Science and Engineering, University of Science and Technology, Beijing 100083, China

Corresponding:

LIU Kaiqi (1969-), male, 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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