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Oxidation and Hot corrosion Behavior of a Composite Coating System

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Journal of Materials Science & Technology 2003年第6期19卷 567-570页

作者： Dongbai XIE and Fuhui wangstate key laboratory for corrosion and protection, institute of metal research, chinese academy of sciences, shenyang 110016. china Lab. for corrosion and protection Inst. of Metal Res. Chinese Acad. of Sci. Shenyang 110016 China

The oxidation and hot corrosion behavior of Co-Ni-Cr-AI-Ta-Y coating produced by magnetron sputtering with and without enamel coating has been investigated in air at 900℃ and in molten 75 wt pct NaCl+25 wt pct Na2SO4 at 850℃. The results show that the enamel coating possesses good hot corrosion resistance in the molten salts, in comparison with the sputtered Co-Ni-Cr-AI-Ta-Y coating. In the hot corrosion test, breakaway corrosion did not occur on the samples with enamel coating and the composition of enamel coating did not significantly change either. The oxidation resistance of the sputtered coating, which offers good adhesion, can be improved by the enamel coating.

关键词： Enamel coating Sputtered coating Hot corrosion Isothermal oxidation

Photocatalytic Property of TiO2 Films Deposited by Pulsed DC Magnetron Sputtering

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Journal of Materials Science & Technology 2004年第1期20卷 31-34页

作者： Wenjie ZHANG, Shenglong ZHU, Ying LI and Fuhui wangstate key laboratory for corrosion and protection, institute of metal research, chinese academy of sciences, shenyang 110016. china chinese Acad Sci Inst Met Res State Key Lab Corros & Protect Shenyang 110016 Peoples R China

TiO2 thin films were prepared by DC magnetron sputtering with the oxygen flow rate higher than the threshold. The film deposited for 5 h was of anatase phase with a preferred orientation along the direction, but the films deposited for 2 and 3 h were amorphous. The transmittance and photocatalytic activity of the TiO2 films increased constantly with increasing film thickness. When the annealing temperature was lower than 700℃, only anatase grew in the TiO2 film. TiO2 phase changed from anatase to rutile when the annealing temperature was above 800℃. The photocatalytic activity decreased with increasing annealing temperature.

关键词： TiO2 film Photocatalytic activity DC magnetron sputtering Film characteristic

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 LI and Fuhui wangstate key laboratory for corrosion and protection, institute of metal research, chinese academy of sciences, shenyang 110016. china State key laboratory for corrosion and protection Institute of Metal Research Chinese Academy of Sciences Shenyang 110016 China

Magnesium coatings were fabricated on stainless steel substrates (1Cr11Ni2W2MoV) 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

The effect of environmental variables on atmospheric corrosion of carbon steel in shenyang

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chinese Science Bulletin 2009年第19期54卷 3438-3445页

作者： WANG Chuan WANG zhenyao KE We State key laboratory for corrosion and protection Institute of Metal Research Chinese Academy of Sciences Shenyang 110016 China

A study was carried out in order to investigate the effect of contaminants and meteorological variables on the rust layer of carbon steel exposed in shenyang urban atmosphere. Seven kinds of contaminants and twelve kinds of meteorological parameters were also registered in order to correlate the data with respect to corrosion rate and the stepwise multiple regression analysis was carried out in order to obtain the best regression model. The sum of rainfall time as well as sunshine time and the concentration of H2S could stimulate initial atmospheric corrosion of carbon steel. The initial atmospheric corrosion kinetics of carbon steel was observed to follow the cubic equation. The corrosion products were analyzed by XRD and the transformation of phases in different periods was discussed.

关键词：钢铁腐蚀大气环境腐蚀状态沈阳市

抗压容器钢在模拟工业码头大气环境下的腐蚀行为研究

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材料保护 2024年第1期57卷 28-35,44页

作者：淦邦马凯军曹公望王振尧国家管网集团东部原油储运有限公司江苏徐州221008 中国科学院金属研究所辽宁沈阳110016 辽宁省材料环境腐蚀与评价重点实验室辽宁沈阳110016

为探究抗压容器钢在模拟工业码头大气环境下的腐蚀行为,利用失重分析、EDS、XRD和电化学方法研究了不同模拟加速试验周期下抗压容器钢Q235和16MnNiVR钢的腐蚀行为。结果表明:抗压容器钢Q235和16MnNiVR钢在模拟工业海洋大气环境试验中,... 详细信息

为探究抗压容器钢在模拟工业码头大气环境下的腐蚀行为,利用失重分析、EDS、XRD和电化学方法研究了不同模拟加速试验周期下抗压容器钢Q235和16MnNiVR钢的腐蚀行为。结果表明:抗压容器钢Q235和16MnNiVR钢在模拟工业海洋大气环境试验中,其腐蚀速率先呈现上升趋势,随着锈层由疏松逐渐变致密,腐蚀速率会发生不同程度地下降。在此加速试验下2种钢的腐蚀产物化学性质一致,所发生的腐蚀行为差异是由金属基材表面腐蚀产物致密性所致,在东南沿海工业海洋大气环境腐蚀因子作用下,16MnNiVR钢的耐蚀性可达到Q235钢的1.6倍。

关键词：抗压容器钢工业码头大气模拟加速试验腐蚀行为

Short-term exposure of low-alloyed steels in Qinghai Salt Lake atmosphere

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chinese Science Bulletin 2009年第19期54卷 3446-3452页

作者： LI QiaoXia WANG zhenyao HAN Wei YU GuoCai HAN EnHou State key laboratory for corrosion and protection Institute of Metal Research Chinese Academy of Sciences Shenyang 110016 China

The rusts formed on carbon steel and weathering steel exposed in Qinghai Salt Lake atmosphere for 6 months were characterized by X-ray diffraction (XRD), infrared transmission spectroscopy (IRS), scanning electron microscopy (SEM), electron probe micro analyzer (EPMA) and electrochemical polarization techniques. The two kinds of steels showed the similar corrosion rate, corrosion product composition and electrochemical polarization behavior. Their rusts were mainly composed of β-FeOOH, Fe8(O,OH)16Cl1.3 and a little γ-FeOOH. Cl- played an important role during the corrosion process of low-alloyed steels. The alloyed elements Cr, Ni and Cu in weathering steel were detected in the rusts; however, they showed no remarkable protective ability.

关键词：钢腐蚀侵蚀风化金属腐蚀