| 辛永磊,彭文山,温杰平,侯健,孙明先.极地低温冻融循环环境下高强钢的腐蚀行为研究[J].装备环境工程,2024,21(7):60-66. XIN Yonglei,PENG Wenshan,WEN Jieping,HOU Jian,SUN Mingxian.Corrosion Behavior of High-strength Steel under Polar Low-temperature Freeze-thaw Cycle Environment[J].Equipment Environmental Engineering,2024,21(7):60-66. |
| 极地低温冻融循环环境下高强钢的腐蚀行为研究 |
| Corrosion Behavior of High-strength Steel under Polar Low-temperature Freeze-thaw Cycle Environment |
| 投稿时间：2024-05-09 修订日期：2024-06-14 |
| DOI：10.7643/issn.1672-9242.2024.07.008 |
| 中文关键词: 极地环境 低温 高强钢 冻融循环 腐蚀 电化学中图分类号:TG172 文献标志码:A 文章编号:1672-9242(2024)07-0060-07 |
| 英文关键词:polar environment low temperature high-strength steel freeze-thaw cycle corrosion electrochemistry |
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| Author | Institution |
| XIN Yonglei | National Key Laboratory of Marine Corrosion and Protection, Luoyang Ship Material Research Institute, Shandong Qingdao 266237, China |
| PENG Wenshan | National Key Laboratory of Marine Corrosion and Protection, Luoyang Ship Material Research Institute, Shandong Qingdao 266237, China |
| WEN Jieping | Marine Chemical Research Institute, Shandong Qingdao 266001, China |
| HOU Jian | National Key Laboratory of Marine Corrosion and Protection, Luoyang Ship Material Research Institute, Shandong Qingdao 266237, China |
| SUN Mingxian | National Key Laboratory of Marine Corrosion and Protection, Luoyang Ship Material Research Institute, Shandong Qingdao 266237, China |
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| 中文摘要: |
| 目的 深入研究极地大气对高强钢腐蚀的影响，探清腐蚀机制。方法 开展室内模拟试验，采用质量损失测试、电化学测试以及腐蚀产物分析等方法，研究Ni-Cr-Mo-V高强钢在极地大气‒45~5 ℃低温冻融循环环境中的腐蚀机理。结果 随着试验周期的延长，高强钢的腐蚀不同程度加深。2个月后，已形成相对较厚的锈层，内部有大量松散的腐蚀产物。在试验3个月后，发现金属表面已经被腐蚀产物覆盖，且表面的腐蚀层产生裂纹。交流阻抗测试和动电位极化测试结果表明，高强钢的容抗弧半径和自腐蚀电位变化较大，耐腐蚀能力较弱。通过XRD和拉曼光谱对腐蚀成分进行表征发现，在低温冻融循环环境中，高强钢腐蚀产物主要为α-FeOOH、β-FeOOH、γ-FeOOH和Fe3O4/γ-Fe2O3。结论 随着低温冻融循环时间增长，高强钢的耐蚀性持续退化。 |
| 英文摘要: |
| The harsh natural environment of low temperature, high humidity and high salt in polar atmosphere may cause severe corrosion of high-strength steel. Therefore, the work aims to investigate the effect of polar atmosphere on high-strength steel corrosion and clarify the corrosion mechanism. Indoor simulation experiments were conducted and methods such as weight loss testing, electrochemical testing, and corrosion product analysis were adopted to study the corrosion mechanism of Ni-Cr-Mo-V high-strength steel in polar atmosphere of ‒45~5 ℃ low-temperature freeze-thaw cycle. With the extension of the test cycle, the corrosion of high-strength steel deepened to varying degrees. After two months, a relatively thick rust layer was formed, with a large amount of loose corrosion products inside. After exposure for three months, it was found that the metal surface was covered by corrosion products, and cracks appeared in the surface corrosion layer. The results of AC impedance testing and dynamic potential polarization testing showed that the capacitance arc radius and corrosion potential of high-strength steel varied greatly, and its corrosion resistance was weak. XRD and Raman spectroscopy were used to characterize the corrosion components, and it was found that in the low-temperature freeze-thaw cycle environment, the corrosion products of high-strength steel were mainly α-FeOOH, β-FeOOH, γ-FeOOH and Fe3O4/γ-Fe2O3. With the low-temperature freeze-thaw cycle time increasing, the corrosion resistance of high-strength steel deteriorates continuously. |
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