个人信息
教师姓名：尹良君
教师拼音名称：yinliangjun
电子邮箱：ljyin@uestc.edu.cn
所在单位：电子科学与工程学院
学历：博士研究生毕业
办公地点：国家电磁辐射控制材料工程技术研究中心 C318B
性别：男
学位：工学博士学位
职称：教授
在职信息：在职人员
毕业院校：中国科技大学
硕士生导师
曾获荣誉：省部级人才计划
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所属院系： 电子科学与工程学院（示范性微电子学院）
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学科：电子信息材料与元器件
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论文成果
Enhancement of oxidation and corrosion resistance of flaky carbonyl?iron powder via SiO2/KH560/PDMS coating applied with sol-gel
发布时间：2025-05-23 点击次数：
所属单位：[1] National Engineering Research Center of Electromagnetic Radiation Control Materials, Key Laboratory of Multi-Spectral Absorbing Materials and Structures of Ministry of Education, State Key Laboratory of Electronic Thin Film and Integrated Devices, University of Electronic Science and Technology of China, 2006 Xiyuan Road, Chengdu, 611731, China; [2] The Yangtze Delta Region Institute [Huzhou], University of Electronic Science and Technology of China, Huzhou, 313001, China; [3] School of Materials and Energy, University of Electronic Science and Technology of China, 2006 Xiyuan Road, Chengdu, 611731, China; [4] Materials Science and Engineering Department, University of Ioannina, Ioannina, Greece
发表刊物：Surface and Coatings Technology
关键字：Corrosion resistant coatings - Oxidation resistance - Thermodynamic stability - Lithium compounds - Thermogravimetric analysis - Contact angle - Magnetite - Silica - Sol-gels - Electrochemical corrosion - Silicates - Composite coatings - Sol-gel process
摘要：The popular magnetic material of flaky carbonyl iron (FCI) is unfortunately vulnerable to electrochemical corrosion when exposed to a salty and foggy environment. This work reports on a sol-gel method that successfully modifies FCI particles, using lithium silicate (Li2SiO3), poly dimethyl siloxane (PDMS), and γ-(2,3-epoxypropoxy) propytrimethoxysilane (KH560), to synthesize Fe@SiO2@KH560@PDMS hybrid composite, related to its organic–inorganic hybrid coatings. The favorable hydrophobicity of organic–inorganic hybrid coatings with the static contact angle of 120° impeded the contact between corrosive medium and FCI core. The results of electrochemical experiments also confirmed its excellent corrosion resistance, since the corrosion potential Ecorr was positively shifted to 0.01 V, and the corrosion current Icorr was three orders of magnitude lower than that of the unmodified FCI particles. Thermogravimetric (TG) analysis indicates that the presence of hybrid coatings also improved the thermal stability of the produced material towards oxidation. Furthermore, the results of molecular dynamics simulation reveal that the hybrid layer inhibits the diffusion of corrosive medium. ? 2022 Elsevier B.V.
文献类型：Journal article (JA)
卷号：437
ISSN号：02578972
是否译文：否
