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Oxidation Resistance and Microwave Absorption of FeCo@Nano-SiO2
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Jing LI, Yingli ZHU, Xiangcheng LI, Ping'an CHEN, Boquan ZHU
Journal of the Chinese Ceramic Society | 2021, 49(6) : 1135 - 1142
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Journal of the Chinese Ceramic Society | 2021, 49(6): 1135-1142
Oxidation Resistance and Microwave Absorption of FeCo@Nano-SiO2
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Jing LI, Yingli ZHU, Xiangcheng LI, Ping'an CHEN, Boquan ZHU
Affiliations
  • The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, China

    • LI Jing (1997-), female, Master candidate. E-mail:

About Author:

LI Jing (1997-), female, Master candidate. E-mail:

Published: 2021-06-20 doi: 10.14062/j.issn.0454-5648.20200651
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FeCo@nano-SiO2 was prepared via a modified Stöber method using tetraethyl orthosilicate using FeCo as raw materials. The results show that the powder has a uniform core-shell structure. The reflection loss (RL) of FeCo@nano-SiO2 reaches -36.1 dB with the thickness of 2.6 mm, and the effective absorption bandwidth with RL<-10 dB is 3.2 GHz when the content of SiO2 is 35% (in mass fraction). The mass of FeCo@nano-SiO2 only increases 2% from room temperature to 800℃, and the optimum oxidation resistance can be obtained at the content of SiO2 of 65%. The SiO2 shell optimizes the impedance matching of FeCo, further facilitating the electromagnetic wave absorption, and prevents the contact between FeCo and oxygen at a high temperature, thus improving the oxidation resistance.

iron-cobalt alloy@nano-silicon dioxide  /  electromagnetic wave absorption  /  effective absorption bandwidth  /  oxidation resistance
李晶, 朱颖丽, 李享成, 陈平安, 朱伯铨. FeCo@纳米SiO2的抗氧化及吸波性能. 硅酸盐学报, 2021 , 49 (6) : 1135 -1142 . DOI: 10.14062/j.issn.0454-5648.20200651
Jing LI, Yingli ZHU, Xiangcheng LI, Ping'an CHEN, Boquan ZHU. Oxidation Resistance and Microwave Absorption of FeCo@Nano-SiO2[J]. Journal of the Chinese Ceramic Society, 2021 , 49 (6) : 1135 -1142 . DOI: 10.14062/j.issn.0454-5648.20200651
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Year 2021 volume 49 Issue 6
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Article Info
doi: 10.14062/j.issn.0454-5648.20200651
  • Receive Date：2020-08-29
  • Online Date：2026-10-30
  • Published：2021-06-20
Article Data
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History
  • Received：2020-08-29
  • Revised：2020-10-20
Funding
Affiliations
    The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, China

Corresponding:

ZHU Yingli (1993-), female, Ph.D., Lecturer; E-mail:
LI Xiangcheng (1978-), male, Ph.D., Professor.
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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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