| 彭文山,李金泽,胡娜,王萍,曹学文,侯健.深海静水压力对高强钢焊接接头腐蚀影响研究[J].装备环境工程,2024,21(10):118-126. PENG Wenshan,LI Jinze,HU Na,WANG Ping,CAO Xuewen,HOU Jian.Effect of Deep Sea Hydrostatic Pressure on Corrosion of High Strength Steel Welded Joints[J].Equipment Environmental Engineering,2024,21(10):118-126. |
| 深海静水压力对高强钢焊接接头腐蚀影响研究 |
| Effect of Deep Sea Hydrostatic Pressure on Corrosion of High Strength Steel Welded Joints |
| 投稿时间：2024-07-01 修订日期：2024-08-09 |
| DOI：10.7643/issn.1672-9242.2024.10.015 |
| 中文关键词: 深海 高强钢 焊接接头 腐蚀 电化学 腐蚀产物中图分类号:TG172 文献标志码:A 文章编号:1672-9242(2024)10-0118-09 |
| 英文关键词:deep sea high strength steel welding joints corrosion electrochemistry corrosion products |
| 基金项目: |
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| Author | Institution |
| PENG Wenshan | National Key Laboratory of Marine Corrosion and Protection, Luoyang Ship Material Research Institute, Shandong Qingdao 266237, China |
| LI Jinze | PipeChina Engineering Technology Innovation Co., Ltd., Tianjin 300450, China |
| HU Na | National Key Laboratory of Marine Corrosion and Protection, Luoyang Ship Material Research Institute, Shandong Qingdao 266237, China;College of New Energy, Shandong Qingdao 266580, China |
| WANG Ping | School of Architecture and Engineering, Qingdao Binhai University, Shandong Qingdao 266555, China |
| CAO Xuewen | College of Pipeline and Civil Engineering, China University of Petroleum East China, Shandong Qingdao 266580, China |
| HOU Jian | 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 研究深海静水压力对焊接接头腐蚀的影响，探清腐蚀机制。方法 采用腐蚀微观形貌观察、腐蚀产物分析与电化学表征相结合的方法，研究高强钢焊接接头在常压低温海水与深海环境中的腐蚀行为。结果 静水压力增加会加剧Ni-Cr-Mo-V高强钢焊接接头的腐蚀。高强钢焊接接头在常压低温海水和深海环境中的腐蚀速率随腐蚀时间增加呈现出前期迅速减小、后期变缓的变化趋势。高强钢焊接接头在海水中浸泡不同周期的腐蚀产物主要有α-Fe2O3、γ-FeOOH、α-FeOOH和Fe3O4。高强钢焊接接头在低温海水环境下，表面主要发生以腐蚀坑合并为趋势的全面腐蚀，而在深海环境下主要发生的是局部腐蚀。结论 不同静水压力使得高强钢焊接接头的腐蚀规律发生变化，进而影响了其腐蚀速率。 |
| 英文摘要: |
| In deep-sea environment, high-strength steel welded joints often suffer from various types of corrosion, such as pitting corrosion and stress corrosion. The work aims to study the effect of deep sea hydrostatic pressure on the corrosion of welded joints and explore the corrosion mechanism. Methods such as corrosion microstructure observation, corrosion product analysis, and electrochemical characterization were combined to study the corrosion behavior of high-strength steel welded joints in low-temperature seawater and deep sea environments. The results indicated that, the increase of hydrostatic water pressure would exacerbate the corrosion of Ni-Cr-Mo-V high strength steel welded joints. The corrosion rate of high-strength steel welded joints in low-temperature seawater and deep-sea environments showed a trend of rapid decrease in the early stage and later slowing down with the increase of corrosion time. The main corrosion products on high-strength steel welded joints after immersing in seawater for different periods were α-Fe2O3, γ-FeOOH, α-FeOOH and Fe3O4. High strength steel welded joints suffered comprehensive corrosion, mainly with a trend of uniform corrosion pits merging, on the surface in low-temperature seawater environments, while localized corrosion mainly occurred in deep-sea environments. Different hydrostatic pressures cause changes in the corrosion pattern of high-strength steel welded joints, which in turn affects their corrosion rate. |
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