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| 酸雨对低碳钢腐蚀行为的影响 | |
| 引用本文： | 林翠,陈三娟,何文,赵立才.酸雨对低碳钢腐蚀行为的影响[J].钢铁研究学报,2011,23(6):18-23. |
| 作者姓名： | 林翠 陈三娟 何文 赵立才 |
| 作者单位： | 1. 南昌航空大学轻合金加工科学与技术国防重点学科实验室,江西南昌330063;南昌航空大学材料科学与工程学院,江西,南昌,330063 2. 南昌航空大学材料科学与工程学院,江西,南昌,330063 3. 南昌航空大学分析测试中心,江西南昌,330063 |
| 基金项目： | 国家自然科学基金资助项目，教育部科学技术研究重点项目，江西省高等学校重点实验室研究项目 |
| 摘 要： | 利用金相显微镜(OM)、扫描电镜(SEM)、X射线衍射(XRD)等分析手段及电化学方法研究了低碳钢在模拟酸雨环境中的腐蚀行为.研究结果表明:碳钢在酸雨环境中腐蚀是一个局部腐蚀和均匀腐蚀并存的过程,溶液中的SO24-和Cl-离子的存在加速了碳钢表面腐蚀坑的形成和生长,腐蚀坑优先出现在铁素体上.腐蚀产物主要有Υ-FeOOH... |
| 关 键 词： | 碳钢 模拟酸雨环境 腐蚀行为 电化学测试 |
Effect of Acid Rain on Corrosion Behavior of Mild Steel |
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| LIN Cui,CHEN San-juan,HE Wen,ZHAO Li-cai.Effect of Acid Rain on Corrosion Behavior of Mild Steel[J].Journal of Iron and Steel Research,2011,23(6):18-23. | |
| Authors: | LIN Cui CHEN San-juan HE Wen ZHAO Li-cai |
| Affiliation: | 1.National Defence Key Discipline Laboratory of Light Alloy Processing Science and Technology,Nanchang Hangkong University,Nanchang 330063,Jiangxi,China;2.School of Material Science and Engineering,Nanchang Hangkong University,Nanchang 330063,Jiangxi,China;3.Analysis and Testing Centre,Nanchang Hangkong University,Nanchang 330063,Jiangxi,China) |
| Abstract: | Corrosion behavior of mild steel in the simulated acid rain environment was investigated by optical microscopy (OM), scanning electron microscopy (SEM) and X ray diffraction (XRD), and electrochemical methods. It is found that corrosion of carbon steel in acid rain environment is a coexistent process of localized corrosion and uniform corrosion. SO2-4 and Cl- ions can accelerate the formation and growth of pits on the surface of mild steel, which preferentially appeared on the ferrite phase. The corrosion products were mainly composed of γ FeOOH, Fe3O4, a little α FeOOH. From the microscopic point of view, needle like and cotton ball type corrosion products existed. The mass loss curve is divided into two stages which both followed the linear growth law. During the first 72h, the mass loss rapidly increased, and from 72h to 1104h, the corrosion rate was relatively slow. Electrochemical measurement showed that there were the more negative corrosion potential Ecorr and the larger corrosion current density Icorr with the extension of time, indicating the increasing corrosion tendency. |
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