| 杨黎晖,徐玮辰,王秀通,王盈,侯保荣.氧化聚合型包覆技术(OTC)在热带海洋大气环境螺栓中的应用[J].装备环境工程,2023,20(3):62-68. YANG Li-hui,XU Wei-chen,WANG Xiu-tong,WANG Ying,HOU Bao-rong.Application of Oxidation Tape and Covering System (OTC) in Tropical Marine Atmospheric Environment[J].Equipment Environmental Engineering,2023,20(3):62-68. |
| 氧化聚合型包覆技术(OTC)在热带海洋大气环境螺栓中的应用 |
| Application of Oxidation Tape and Covering System (OTC) in Tropical Marine Atmospheric Environment |
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| DOI：10.7643/issn.1672-9242.2023.03.008 |
| 中文关键词: 氧化聚合包覆技术 螺栓 海洋大气 腐蚀 防护 大气曝晒试验中图分类号:TG174 文献标识码:A 文章编号:1672-9242(2023)03-0062-07 |
| 英文关键词:oxidation tape and covering system bolt marine atmosphere corrosion protection atmospheric exposure experiment |
| 基金项目:科技部科技基础资源调查专项(2019FY101400)；中国科学院海外科教合作中心部署项目(121311KYSB20210005) |
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| Author | Institution |
| YANG Li-hui | Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences, Shandong Qingdao 266071, China;Open Studio for Marine Corrosion and Protection, Pilot National Laboratory for Marine Science and Technology Qingdao, Shandong Qingdao 266237, China |
| XU Wei-chen | Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences, Shandong Qingdao 266071, China;Open Studio for Marine Corrosion and Protection, Pilot National Laboratory for Marine Science and Technology Qingdao, Shandong Qingdao 266237, China |
| WANG Xiu-tong | Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences, Shandong Qingdao 266071, China;Open Studio for Marine Corrosion and Protection, Pilot National Laboratory for Marine Science and Technology Qingdao, Shandong Qingdao 266237, China |
| WANG Ying | Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences, Shandong Qingdao 266071, China;Open Studio for Marine Corrosion and Protection, Pilot National Laboratory for Marine Science and Technology Qingdao, Shandong Qingdao 266237, China |
| HOU Bao-rong | Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences, Shandong Qingdao 266071, China;Open Studio for Marine Corrosion and Protection, Pilot National Laboratory for Marine Science and Technology Qingdao, Shandong Qingdao 266237, China |
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| 中文摘要: |
| 目的 研究氧化聚合型技术(OTC)在热带海洋大气环境中对高强螺栓的防护效果。方法 在三亚大气腐蚀试验站开展OTC包覆和未保护的高强螺栓6 a的大气曝晒试验，通过扫描电镜(SEM)、X射线衍射仪(XRD)、X射线光电子能谱仪(XPS)和激光共聚焦显微镜(LSCM)开展腐蚀形貌和成分分析，通过质量损失试验考察OTC包覆和未保护的高强螺栓的腐蚀行为。结果 未经保护的螺栓表面生成大量棕红色的腐蚀产物，XRD分析表明，其主要成分为α-FeOOH、β-FeOOH、γ-FeOOH、Fe3O4和Fe2O3等，其中β-FeOOH晶体结构中含有Cl–，会加速基体腐蚀。经LSCM分析，螺栓垫片整体呈全面腐蚀状态，但同时发生局部腐蚀，最深的点蚀坑达120 μm以上。经OTC技术保护的高强螺栓，仅在底部出现少量棕色物质，大部分仍呈现原有的黑色基体表面，OTC包覆螺栓6 a的腐蚀速率约为未保护螺栓的腐蚀速率1/15，OTC包覆垫片表面未出现明显腐蚀。结论 氧化聚合型包覆技术显著降低了高强螺栓的腐蚀速率，具有优良的耐腐蚀性能，在热带海洋大气环境对高强螺栓起到良好的长效防护作用。 |
| 英文摘要: |
| The work aims to study the anti-corrosion effects of Oxidation Tape and Covering system (OTC) on high-strength bolts in tropical marine atmospheric environment. The OTC coated and unprotected high-strength bolts were exposed in Sanya atmospheric corrosion test site for 6 a. The corrosion morphology and composition were analyzed by scanning electron microscope (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and laser scanning confocal microscopy (LSCM). The corrosion behaviors of OTC coated and unprotected high-strength bolts were investigated through weight loss experiment. A large number of brownish red corrosion products were formed on the unprotected bolt surface. XRD analysis showed that the main components of corrosion products were α-FeOOH, β-FeOOH, γ-FeOOH, Fe3O4, Fe2O3, etc., while β-FeOOH crystal structure contained Cl–, which would accelerate matrix corrosion. According to LSCM analysis, the bolt gasket was in an overall corrosion state, but local corrosion occurred at the same time, and the depth of pitting was more than 120 μm. For high-strength bolts protected by OTC, only a small amount of brown substance appeared at the bottom. Most of them were still kept with the original black matrix surface. The corrosion rate of OTC coated bolts accounted for about 1/15 of the corrosion rate of unprotected bolts. There was no apparent corrosion on the surface of the OTC coated gasket. The oxidation tape and covering system significantly reduces the corrosion rate of high-strength bolts and has excellent corrosion resistance. It plays a good long-term protective role for high-strength bolts in tropical marine atmospheric environment. |
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