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Preparation and corrosion Resistance of Magnesium Coatings by Magnetron Sputtering Deposition

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Journal of Materials Science & Technology 2003年第5期19卷 459-462页

作者： hongwei huo, ying {2. and Fuhui wangstate key laboratory for corrosion and protection, institute of metal research, chinese academy of sciences, shenyang 110016, china State key laboratory for {2. and protection Institute of Metal Research Chinese Academy of Sciences Shenyang 110016 China

Magnesium coatings were fabricated on stainless steel substrates (1Cr11Ni2.2.oV) by a plane magnetron sputtering technique. The argon pressure and the substrate condition (including temperature and the substrate was rotated or fixed) were varied in order to evaluate the influence of the parameters on the crystal orientation and morphology of the coating. The corrosion behavior of the coatings in 1 wt pct NaCI solution was studied by electrochemical methods. The results showed that all coatings exhibited preferred orientation (002. as the argon pressure increased from 0.2.to 0.4 Pa. The morphologies of the coatings varied with the argon pressure and with whether the substrate was rotated or fixed. The open circuit potential of the coatings was more positive than that of cast AZ91D magnesium alloy. However, the immersion test in 1 wt pct NaCI solution showed that the corrosion rates of the coatings were higher than that of cast AZ91D magnesium alloy.

关键词： Magnesium coating corrosion Magnetron sputtering deposition

Improvement on the corrosion Resistance of AZ91D Magnesium Alloy by Aluminum Diffusion Coating

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Journal of Materials Science & Technology 2007年第3期23卷 379-382页

作者： hongwei huo ying {2. Fuhui WANG College of life and Chemistry Science Shenyang Normal University Shenyang 110034 China State key laboratory of {2. and protection Institute of Metal Research Chinese Academy of Sciences Shenyang 110016 China

By combination of magnetron sputtering deposition and vacuum annealing, an aluminum diffusion coating was prepared on the substrate of AZ91D alloy to improve its corrosion resistance. The microstructure and composition of the diffusion coating was investigated by scanning electron microscopy and X-ray diffraction. The diffusion coating was mainly comprised of β phase-Al12.g17. The continuous immersion test in 3.5 wt pct neutral NaCl solution indicated that the specimen with diffusion coating had better corrosion resistance compared with the bare AZ91D alloy specimen. The potentiodynamic polarization measurement indicated that the diffusion coating could function as an effectively protective layer to reduce the corrosion rate of AZ91D alloy when exposed to 3.5 wt pct NaCl solution.

关键词： AZ91D Magnesium alloy corrosion Diffusion coating

高速列车用不饱和聚酯腻子的耐蚀性和老化机理

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腐蚀与防护 2024年第1期45卷 34-40页

作者：梁国平李春霖李丽王浩王伟史洪微刘福春韩恩厚东北大学材料科学与工程学院材料各向异性与织构教育部重点实验室沈阳110819 中国科学院金属研究所中国科学院核用材料与安全评价重点实验室青岛266111 中车青岛四方机车车辆股份有限公司沈阳110016 沈阳工业大学材料科学与工程学院沈阳110870

利用电化学阻抗谱、湿热老化等方法研究了不饱和聚酯腻子的耐蚀性和老化机理。结果表明:在3.5%NaCl溶液中浸泡6 h后,腐蚀溶液便渗入腻子/铝合金界面,并发生电化学腐蚀,不饱和聚酯腻子阻抗下降明显,防护能力下降较快;在湿热老化过程中,... 详细信息

利用电化学阻抗谱、湿热老化等方法研究了不饱和聚酯腻子的耐蚀性和老化机理。结果表明:在3.5%NaCl溶液中浸泡6 h后,腐蚀溶液便渗入腻子/铝合金界面,并发生电化学腐蚀,不饱和聚酯腻子阻抗下降明显,防护能力下降较快;在湿热老化过程中,不饱和聚酯腻子光泽和色差逐渐增加,表面随着树脂的老化和降解变得光滑且局部产生空洞;不饱和聚酯腻子在老化初期存在着后固化现象;老化和降解更容易在芳香酯的位置发生。

关键词：不饱和聚酯腻子铝合金电化学阻抗谱湿热老化傅里叶变换红外光谱

Protective Coatings Containing ZnMOF-BTA metal–Organic Framework for Active protection of AA2.2.-T3

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Acta metallurgica Sinica(English Letters) 2023年第11期36卷 1893-1908页

作者： Izuchukwu K.Nwokolo hongwei Shi Paul CUzoma Sharjeel Ahmed Jiwen li Fuchun liu CAS key laboratory of Nuclear Materials and Safety Assessment Institute of Metal ResearchChinese Academy of SciencesShenyang110016China School of Materials Science and Engineering University of Science and Technology of ChinaHefei230026China School of Materials Science and Engineering Shenyang University of TechnologyShenyang110870China ZJU-UIUC institute International CampusZhejiang UniversityHaining314400China institute of corrosion Science and Technology Guangzhou510530China

ZnMOF-BTA,a new metal–organic framework with excellent anti-corrosion properties was prepared and *** and immersion tests in 3.5 wt%NaCl were performed on AA2.2.-T3 alloy to assess the corrosion inhibition ability of *** showed an inhibition efficiency of more than 90%,indicating excellent corrosion inhibition of ZnMOF-BTA on AA 2.2.-T3 in ***,ZnMOF-BTA particles were incorporated into polyurethane coatings to create corrosion-resistant *** tests and neutral salt spray analysis were used to assess the corrosion protection ability of ZnMOF-BTA-laden polyurethane *** results of electrochemical impedance spectra clearly showed the outstanding corrosion resistance and durability of ZnMOF-BTA coatings after 1440 h of immersion with a high pore resistance(Rpo)of 1.76×10^(10)Ωcm^(2..In addition,during the cross-cut adhesion test,the coating did not detach from the substrate,and after the impact test,there was scarcely any indication of a fracture,which further supports the notion that the coating has strong adhesion to the substrate.

关键词： Aluminum alloy Benzotriazole corrosion inhibition Electrochemical impedance spectroscopy(EIS) metal-organic framework Organic coatings

Active anticorrosion and self-healing coatings:A review with focus on multi-action smart coating strategies

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Journal of Materials Science & Technology 2022年第21期116卷 224-237页

作者： Inime Ime Udoh hongwei Shi Enobong Felix Daniel Jianyang li Songhua Gu Fuchun liu En-Hou Han CAS key laboratory of Nuclear Materials and Safety Assessment Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China School of Environmental and Chemical Engineering Shenyang Ligong UniversityShenyang 110159China University of Science and Technology of china Hefei 230026China

The development of smart coatings with potential for active anticorrosion and self-healing {2. of metals is essential for long-term performance of metallic structures in aggressive chemical ***,emphasis has been placed on the development of advanced smart coatings for corrosion {2. in different *** multifunctional coatings with fascinating stimuliresponsive functionalities are considered“smart”.The stimuli-responsive functionalities of these smart coatings when properly harnessed result in a class of coatings with inherent autonomous control of ***,when metals are exposed to aggressive environments,occurrences at the metalsolution interface cause environmental *** changes can be controlled when triggers from external environment set off active components of smart coating,thereby enhancing coating’s life and *** triggers include the availability of moisture,concentration of chloride ion,p H gradient,mechanical damage,impact,fatigue,light,redox activity and *** this review,recent technological trends in active anticorrosion and self-healing coatings as functional routes for metal {2. are summarized,stimuli responsiveness and mechanisms of inhibition are discussed,and recent multi-action protective systems are particularly focused on.

关键词： Smart coating Active anticorrosion protection Self-healing Multi-action protection mechanism

高速列车用聚氨酯面漆耐蚀性能和老化机制研究

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中国腐蚀与防护学报 2023年第6期43卷 1383-1391页

作者：李春霖史洪微梁国平李丽王浩王伟刘福春韩恩厚中车青岛四方机车车辆股份有限公司青岛266111 沈阳工业大学材料科学与工程学院沈阳110870 中国科学院金属研究所中国科学院核用材料与安全评价重点实验室沈阳110016 东北大学材料科学与工程学院材料各向异性与织构教育部重点实验室沈阳110819

利用电化学阻抗谱(EIS)、紫外老化、扫描电镜(SEM)和红外光谱(FTIR)等方法研究了铝合金板表面涂覆的聚氨酯面漆的耐蚀性能和老化机制。结果表明,在3.5wt.%NaCl溶液中浸泡2.0 h后,聚氨酯面漆发生了后固化现象。在浸泡384~1560 h期间,聚... 详细信息

利用电化学阻抗谱(EIS)、紫外老化、扫描电镜(SEM)和红外光谱(FTIR)等方法研究了铝合金板表面涂覆的聚氨酯面漆的耐蚀性能和老化机制。结果表明,在3.5wt.%NaCl溶液中浸泡2.0 h后,聚氨酯面漆发生了后固化现象。在浸泡384~1560 h期间,聚氨酯面漆/铝合金体系界面发生微腐蚀。在浸泡192.~2.60 h期间,铝合金基材表面产生了腐蚀产物膜。聚氨酯面漆在紫外老化实验中,表面逐渐产生孔洞变得疏松并发生剥落、光泽度逐渐下降、失光率增加以及色差先增加后趋于稳定,老化前期以可见光降解为主,老化后期以紫外光降解为主。

关键词：聚氨酯面漆铝合金电化学阻抗谱紫外老化 Fourier变换红外光谱