| 杨志国,胡传顺,梁平,秦华.X80钢在库尔勒和高pH值土壤模拟溶液中的腐蚀行为[J].装备环境工程,2012,9(1):41-45. YANG Zhi-guo,HU Chuan-shun,LIANG Ping,QIN Hua.Corrosion Behaviors of X80Steel in Ku′erle and High pH Soil Simulated Solutions[J].Equipment Environmental Engineering,2012,9(1):41-45. |
| X80钢在库尔勒和高pH值土壤模拟溶液中的腐蚀行为 |
| Corrosion Behaviors of X80Steel in Ku′erle and High pH Soil Simulated Solutions |
| 投稿时间：2011-08-01 |
| DOI： |
| 中文关键词: X80管线钢 库尔勒土壤模拟溶液 耐蚀性 |
| 英文关键词:X80pipeline steel simulated Ku′ele soil solution corrosion resistance |
| 基金项目:中文基金项目 |
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| 中文摘要: |
| 通过浸泡质量损失法、动电位极化和交流阻抗等方法研究了X80管线钢在库尔勒和高pH值（0.5 mol/L Na2CO3 +1mol/L NaHCO3）土壤模拟溶液中的腐蚀行为，并对宏观腐蚀形貌进行了观察，采用X-射线衍射仪测试了腐蚀产物膜的组成。结果表明，X80管线钢在高pH值土壤模拟溶液中腐蚀很轻微，而在库尔勒土壤模拟溶液中则发生了严重的腐蚀，其腐蚀速率约是高pH值土壤模拟溶液中的3倍。这主要是因为X80管线钢在库尔勒土壤模拟溶液中表现出活性溶解状态，形成的腐蚀产物膜疏松、易脱落，保护性很差；在高pH值土壤模拟溶液中则很容易钝化，形成的碳酸亚铁腐蚀产物膜具有一定的阻隔效应，产生了明显的保护作用，腐蚀速率因此很低。 |
| 英文摘要: |
| The corrosion behaviors of X80pipeline steel in ku′erle and high pH（0.5mol/L Na2CO3 +1mol/L NaHCO3）soil simulated solutions were investigated using immersion weight loss, potentiodynamic potential polarization and EIS; the corrosion macro-morphology were observed; and the corrosion product was tested by X-ray diffraction. The results showed that slight corrosion occurred on the surface of X80pipeline steel in high pH soil simulated solution, but the corrosion in ku'erle soil was serious, and the corrosion rate in ku′erle soil solution was about3times as much as that of in high pH simulated soil solution. It is mainly because X80pipeline steel in simulated ku'erle soil solution shows an active dissolution state, and the corrosion products film is very loose and chipped off, so the protection performance is very poor. However, X80steel is passivated easily in high pH simulated soil solution, moreover, the FeCO3 corrosion products film formed in high pH simulated soil solution has a blocking effect, so the metal is protected from corroding and the corrosion rate is lower. |
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