Electromagnetic wave absorption and corrosion resistance performance of carbon nanoclusters/Ce-Mn codoped barium ferrite composite materials  

作　　者：Bo Li Lin Ma Sinan Li Jiewu Cui Xiaohui Liang Wei Sun Pengjie Zhang Nan Huang Song Ma Zhidong Zhang 

机构地区：[1]Shenyang National Laboratory for Materials Science,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China [2]School of Materials Science and Engineering,University of Science and Technology of China,Shenyang 110016,China [3]School of Metallurgy Engineering,Liaoning Institute of Science and Technology,Benxi 117004,China [4]School of Materials Science and Engineering,Hefei University of Technology,Hefei 230009,China [5]Institute of Microelectronics,Hangzhou Dianzi University,Hangzhou 310018,China [6]BGRIMM Magnetic Materials&Technology Co.,Ltd.,Beijing 100160,China

出　　处：《International Journal of Minerals,Metallurgy and Materials》2025年第3期699-709,共11页矿物冶金与材料学报(英文版)

基　　金：supported by the National Key R&D Program of China(Nos.2022YFB3504804 and 2023YFF0718303);the National Natural Science Foundation of China(Nos.51871219,52071324,52031014,and 52401255);Science and Technology Project of Shenyang City(No.22-101-0-27);Liaoning Institute of Science and Technology Doctoral Initiation Fund Project(No.2307B19).

摘　　要：To realize the application of electromagnetic wave absorption(EWA)devices in humid marine environments,bifunctional EWA materials with better EWA capacities and anticorrosion properties have great exploration significance and systematic research re-quirements.By utilizing the low-cost and excellent magnetic and stable chemical characteristics of barium ferrite(BaFe_(12)O_(19))and using the high dielectric loss and excellent chemical inertia of nanocarbon clusters,a new type of nanocomposites with carbon nanoclusters en-capsulating BaFe_(12)O_(19)was designed and synthesized by combining an impregnation method and a high-temperature calcination strategy.Furthermore,Ce-Mn ions were introduced into the BaFe_(12)O_(19)lattice to improve the dielectric and magnetic properties of BaFe_(12)O_(19)cores significantly,and the energy band structure of the doped lattice and the orders of Ce replacing Fe sites were calculated.Benefiting from Ce-Mn ion doping and carbon nanocluster encapsulation,the composite material exhibited excellent dual functionality of corrosion resist-ance and EWA.When BaCe_(0.2)Mn_(0.3)Fe_(11.5)O_(19)-C(BCM-C)was calcined at 600°C,the minimum reflection loss of-20.1 dB was achieved at 14.43 GHz.The Ku band’s effective absorption bandwidth of 4.25 GHz was achieved at an absorber thickness of only 1.3 mm.The BCM-C/polydimethylsiloxane coating had excellent corrosion resistance in the simulated marine environment(3.5wt%NaCl solution).The|Z|0.01Hz value of BCM-C remained at 106Ω·cm^(2)after 12 soaking days.The successful preparation of the BaFe_(12)O_(19)composite en-capsulated with carbon nanoclusters provides new insights into the preparation of multifunctional absorbent materials and the fabrication of absorbent devices applied in humid marine environments in the future.

关 键 词：electromagnetic wave absorption ANTICORROSION barium ferrite cerium and manganese doping carbon nanoclusters 

分 类 号：TB33[一般工业技术—材料科学与工程]