碳钢在90℃、H_2S-HCl-H_2O环境下的腐蚀行为 Ⅰ-H_2S浓度对碳钢腐蚀行为的影响
CORROSION BEHAVIOR OF CARBON STEEL IN H_2S-HCl-H_2O AT 90℃ Ⅰ-The Effect of H_2S Concentration on the Corrosion Behavior of Carbon Steel
查看参考文献28篇
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文摘
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在实验室模拟炼油厂常减压塔顶冷凝水系统环境,用腐蚀失重法和电化学测试方法并结合扫描电镜(SEM)和X射线衍射(XRD)分析手段,研究90℃条件下低碳钢在含有不同浓度H_2S的模拟溶液中的腐蚀电化学行为. 结果表明,H_2S强烈地促进碳钢的阴极过程,H_2S浓度升高,阴极过程加剧,腐蚀速率加快;H_2S存在时,电极表面发生严重的局部腐蚀而形成大量腐蚀坑,同时形成一层主要成分为四方硫铁矿的腐蚀产物,硫化物沉积层随H_2S浓度升高而变得疏松、易于破裂和脱落 |
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其他语种文摘
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The electrochemical behavior of low carbon steel in acidic simulation solutions containing different concentrations of H_2S at 90℃was investigated by mass loss method, electrochemical measurements and observations of scanning electron microscope(SEM) and X-ray radiation diffaction(XRD).The results showed that the cathodic depolarization was enhanced greatly and the corrosion rate of carbon steel increased remarkably with the increase of H_2S concentration. The severe corrosion holes were observed on the carbon steel surface in the H_2S-containing solutions. The corrosion products layer deposited on carbon steel were mainly composed of mackinawite, which became loose, easily cracked and sloughed off with increasing concentration of H_2S |
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来源
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中国腐蚀与防护学报
,2011,31(1):28-33 【核心库】
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关键词
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碳钢
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H_2S
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腐蚀
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四方硫铁矿
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地址
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1.
哈尔滨工程大学材料科学与化学工程学院腐蚀与防护实验室, 哈尔滨, 150001
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中国石油兰州石油化工公司, 兰州, 730060
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哈尔滨工程大学材料科学与化学工程学院腐蚀与防护实验室, 金属腐蚀与防护国家重点实验室, 哈尔滨, 150001
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1005-4537 |
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学科
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金属学与金属工艺 |
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文献收藏号
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CSCD:4136030
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