| 工业废水水暖管道腐蚀失效分析 |
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| 引用本文： | 张红霞,王文先,陈少平,周翠兰.工业废水水暖管道腐蚀失效分析[J].腐蚀与防护,2007,28(6):320-322,324. |
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| 作者姓名： | 张红霞 王文先 陈少平 周翠兰 |
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| 作者单位： | 太原理工大学材料科学与工程学院,太原,030024;太原理工大学材料科学与工程学院,太原,030024;太原理工大学材料科学与工程学院,太原,030024;太原理工大学材料科学与工程学院,太原,030024 |
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| 摘 要： | 针对工业废水水暖管道腐蚀失效问题,采用化学成分分析、X射线衍射、光学显微镜、腐蚀电化学试验等方法对腐蚀钢管进行分析。结果表明,腐蚀沉积物中含有Fe3O4、Fe2O3、Fe2(SO4)3及FeS;水介质pH值低于最小腐蚀速度范围的pH值;水介质中Cl-浓度值偏高,SO42-浓度值比标准偏高近一倍,这些因素对钢管的腐蚀速度及腐蚀性能均造成影响;母材中存在的夹杂和带状组织对材料的腐蚀性影响不大。因此工业废水用于供暖管网前,应对介质水进行一定的处理来保证供暖管网的寿命。
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| 关 键 词： | 钢管 腐蚀 失效分析 电化学分析 |
| 文章编号： | 1005-748X（2007）06-0320-03 |
| 收稿时间： | 2007-01-17 |
| 修稿时间： | 2007-01-172007-02-12 |
CORROSION FAILURE ANALYSES OF INDUSTRIAL WASTE WATER HEATING PIPE |
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| ZHANG Hong-xia,WANG Wen-xian,CHEN Shao-ping,ZHOU Cui-lan.CORROSION FAILURE ANALYSES OF INDUSTRIAL WASTE WATER HEATING PIPE[J].Corrosion & Protection,2007,28(6):320-322,324. |
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| Authors: | ZHANG Hong-xia WANG Wen-xian CHEN Shao-ping ZHOU Cui-lan |
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| Affiliation: | College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China |
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| Abstract: | Chemical composition analysis,X-ray diffraction,optical microscopy and electrochemical testing methods were adopted to test the corrosion of steel pipe.The corrosion accumulation in the steel pipe was composed of Fe3O4,Fe2O3,Fe2(SO4)3 and FeS.The pH value of medium water in heating pipe was 7.5~8.26 and lower than the pH value 10~12,which is the value corresponding to minimum corrosion speed.Concentration of Cl-was high and that of SO2-4 was about double of the standard value.These factors could influence the corrosion speed and corrosion performance of steel pipe.The banded structure in the steel pipe had hardly influenced the corrosion.The industrial waste treatment should be carried out to improve the life time of the heating steel pipe before it is used. |
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| Keywords: | Steel pipe Corrosion Failure analysis Electrochemical corrosion |
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