Plasma-enhanced interfacial engineering of FeSiAl@PUA@SiO_(2)hybrid for efficient microwave absorption and anti-corrosion  

作　　者：Hongyan Zhang Feng Cao Hui Xu Wei Tian Ying Pan Nasir Mahmood Xian Jian 

机构地区：[1]School of Materials and Energy,University of Electronic Science and Technology of China,Chengdu 611731,China [2]Yangtze Delta Region Institute(Huzhou),University of Electronic Science and Technology of China,Huzhou 313001,China [3]Department of Engineering Technology,Huzhou College,Huzhou 313000,China [4]School of Science,RMIT University,Melbourne,VIC 3001,Australia

出　　处：《Nano Research》2023年第1期645-653,共9页纳米研究（英文版）

基　　金：This work was financially supported by the National Natural Science Foundation of China(No.51972045);the Fundamental Research Funds for the Chinese Central Universities,China(No.ZYGX2019J025);Sichuan Science and Technology Program(No.2021YFG0373).

摘　　要：Microwave absorption materials are prone to degradation in extremely humid and salty environments,and it is still challenging to develop a dense and firm interface to protect microwave absorbers.Herein,a robust FeSiAl@PUA@SiO2(PUA:acrylic polyurethane)gradient hybrid was prepared through plasma-enhanced chemical vapor deposition(PECVD)to achieve efficient microwave absorption and anti-corrosion properties.The organic/inorganic dual coat of PUA/SiO2 not only facilitated the interface polarization but also effectively reduced the dielectric constant and optimized impedance matching.Owing to the unique hybrid structure,the(PECVD-FeSiAl@PUA)@SiO_(2) exhibited highly efficient microwave absorbing performance in frequency bands covering almost the entire Ku-bands(12-18 GHz)with a minimum reflection loss(RLmin)of−47 dB with a matching thickness of 2.3 mm.The organic/inorganic dual protection effectively shields against the corrosive medium,as the corrosion potential and the polarization resistance increased from−0.167 to−0.047 V and 8,064 to 16,273Ω·cm^(2),respectively.While the corrosion current decreased from 3.04×10^(−6) to 2.16×10^(−6) A/cm^(2).Hence,the plasma-enhanced densification of PUA created a strong bridge to integrate FeSiAl and organic/inorganic components acquiring dual-function of efficient microwave absorption and anticorrosion,which opened a promising platform for potential practical absorbers.

关 键 词：FeSiAl polyurethane acrylic inorganic/organic interface microwave absorption ANTI-CORROSION 

分 类 号：TB383[一般工业技术—材料科学与工程]