Improved Interfacial Interactions by Core-Shell CoFe2O4@SiO2 Composites to Enhance the Ability of Corrosion Resistance and Electromagnetic Wave Absorption

被引:3
作者
Wei, Shuang [1 ,2 ]
Sun, Tianxiang [1 ]
Ma, Chengcheng [1 ]
Gao, Hui [1 ]
Zhao, Zhipeng [1 ]
Feng, Huimeng [1 ]
Li, Wen [1 ]
Chen, Shougang [1 ]
机构
[1] Ocean Univ China, Coll Mat Sci & Engn, Qingdao 266100, Peoples R China
[2] Qingdao Univ, Inst Biomed Engn, Coll Life Sci, Qingdao 266071, Peoples R China
基金
中国国家自然科学基金;
关键词
core-shell structure; electromagnetic wave absorption; interfacial interaction; marine corrosion protection; MICROWAVE-ABSORPTION; GRAPHENE; LIGHTWEIGHT; MICROSPHERES; PERFORMANCE;
D O I
10.1002/smll.202405814
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
With the rapid development of science and technology, stealth and anti-corrosion activities in oceans have attracted widespread attention. This study successfully prepares CoFe2O4@SiO2 with a core-shell structure. This core-shell structure endows the CoFe2O4@SiO2 with good impedance matching and interfacial polarization. Thus, the CoFe2O4@SiO2 exhibits an excellent electromagnetic wave absorption performance with a minimum reflection loss of -45.16 dB. Moreover, the CoFe2O4@SiO2 exhibits an excellent dispersion ability in epoxy. The corrosion resistance of the CoFe2O4@SiO2/epoxy is enhanced. After 60 days of immersion, the low-frequency impedance modulus of the CoFe2O4@SiO2/epoxy is still >10(9) Omega cm(2). The CoFe2O4@SiO2 realize the dual functions of stealth and anti-corrosion, which provide ideas for developing marine stealth applications.
引用
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页数:12
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