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| 酸性土壤中模拟硝酸型酸雨作用下X70钢的腐蚀行为 | |
| 引用本文： | 许进,王海峰,王欣,孙成,王福会,于长坤. 酸性土壤中模拟硝酸型酸雨作用下X70钢的腐蚀行为[J]. 中国腐蚀与防护学报, 2009, 29(5) |
| 作者姓名： | 许进 王海峰 王欣 孙成 王福会 于长坤 |
| 作者单位： | 1. 中国科学院金属研究所,金属腐蚀与防护国家重点实验室,沈阳,110016 2. 青海盐湖钾肥股份有限公司,格尔木,816000 3. 沈阳广播电视大学理工学院生化系,沈阳,110003 |
| 基金项目： | 国家自然科学基金面上项目，科技部国家科技基础平台项目 |
| 摘 要： | 采用极化曲线、电化学阻抗谱、X射线衍射分析(XRD)及扫描电子显微镜(SEM)等方法,研究酸性土壤中不同pH值模拟硝酸型酸雨对X70钢腐蚀行为的影响.结果表明,酸性土壤中模拟硝酸型酸雨对埋地X70钢的腐蚀起加速作用;XRD结果表明X70钢表面的腐蚀产物主要由Fe2O3和SiO2组成;SEM分析表明随着淋溶液pH值的升高试样表面粗糙度逐级降低,气孔数量逐渐减少. |
| 关 键 词： | 酸性土壤 模拟硝酸型酸雨 X70钢 |
CORROSION BEHAVIOUR OF X70 STEEL IN SIMULATED NITRIC ACID RAIN IN ACID SOIL |
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| XU Jin,WANG Haifeng,WANG Xin,SUN Cheng,WANG Fuhui,YU Changkun. CORROSION BEHAVIOUR OF X70 STEEL IN SIMULATED NITRIC ACID RAIN IN ACID SOIL[J]. Journal of Chinese Society For Corrosion and Protection, 2009, 29(5) | |
| Authors: | XU Jin WANG Haifeng WANG Xin SUN Cheng WANG Fuhui YU Changkun |
| Abstract: | The effects of simulated nitric acid rain in different pH value on X70 steel in acidic soil were studied by means of polarization curves、electrochemical impedance spectroscopy(eis)、x-ray diffraction(xrd)、scanning electron microscopy(sem) etc.The results revealed that simulated acid rain could heavily increase the corrosion rate of X70 buried;The results of X-ray showed that corrosion products mainly consist of Fe_2O_3,SiO_2;The results of SEM showed that with the increasing of pH value surface roughness was falling and quantities of microspores decreasing. |
| Keywords: | acid soil simulated nitric acid rain X70 steel |
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