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    段玉平

    • 教授     博士生导师   硕士生导师
    • 主要任职:国际教育学院院长、直属党支部书记、留学生办公室主任
    • 其他任职:辽宁省凝固控制与数字化制备技术重点实验室副主任
    • 性别:男
    • 毕业院校:大连理工大学
    • 学位:博士
    • 所在单位:材料科学与工程学院
    • 学科:材料加工工程
    • 办公地点:铸造中心213
    • 联系方式:0411-84708446
    • 电子邮箱:duanyp@dlut.edu.cn

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    Broadband superior electromagnetic absorption of a discrete-structure microwave coating

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    论文类型:期刊论文

    第一作者:Duan, Yuping

    通讯作者:Wang, TM (reprint author), Dalian Univ Technol, Sch Mat Sci & Engn, Key Lab Solidificat Control & Digital Preparat Te, Dalian 116085, Peoples R China.

    合写作者:Xi, Qun,Liu, Wei,Wang, Tongmin

    发表时间:2016-10-15

    发表刊物:JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS

    收录刊物:SCIE、EI、Scopus

    卷号:416

    页面范围:155-163

    ISSN号:0304-8853

    关键字:Microwave absorption; Coating; Carbonyl-iron particle; Discrete structure

    摘要:A method of improving the electromagnetic (EM) absorption property of conventional microwave absorber (CMA) is proposed here. The structural design process was mainly concerned with systematic analysis and research into the impedance matching characteristic and induced current. By processing a CMA-carbonyl-iron powder (CIP) coating into many isolated regions, the discrete-structure microwave absorber (DMA) had a much better absorption property than the corresponding CMA. When the thickness was only 2.0 mm and the component content was 33 wt%, the loss of reflection was less than -10 dB shifted from 6-7 GHz to 7-13 GHz and the loss of minimum reflection decreased from 12.5 dB lost to 32 dB lost through a discrete-structure process. The microwave absorption properties of coatings with different component contents and thicknesses were investigated. The minimum reflection peaks tended to shift towards the lower frequency region as CIP content or coating thickness increased. By adjusting these three factors, a high-performance broadband absorber was produced. (C) 2016 Elsevier B.V. All rights reserved.