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Neural network method for the modeling of SS 316L elbow corrosion based on electric field mapping 基于电场映射的316L不锈钢弯头腐蚀神经网络建模方法
IF 3.2 4区 材料科学 Q3 ELECTROCHEMISTRY Pub Date : 2022-05-19 DOI: 10.1515/corrrev-2021-0057
Azhar M. Memon, U. Salman, Abdulhammed K. Hamzat, L. Alhems
Abstract Stainless steel is known for its superior corrosion resistance in industrial applications. In this work, corrosion modeling of stainless steel 316L is presented using artificial neural networks. The experimental setup consists of a loop containing stainless steel elbow with simulated seawater of known concentration continuously flowing at a specific flow rate, thus allowing to study the effect of flow dynamics and salt concentration on corrosion. Electric field mapping setup is used to collect the voltage and current information along with the temperature of the elbow section. In addition to modeling, characteristics of the observed scale deposits are also studied in-depth and briefly reported in this work.
摘要不锈钢在工业应用中以其优异的耐腐蚀性而闻名。本文采用人工神经网络对316L不锈钢的腐蚀进行了建模。实验装置由一个包含不锈钢弯管的回路组成,其中已知浓度的模拟海水以特定流速连续流动,从而可以研究流动动力学和盐浓度对腐蚀的影响。电场映射设置用于收集电压和电流信息以及弯管部分的温度。除建模外,本工作还对观测到的规模矿床的特征进行了深入研究并简要报道。
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引用次数: 1
Phase field modeling of corrosion damage 腐蚀损伤的相场模拟
IF 3.2 4区 材料科学 Q3 ELECTROCHEMISTRY Pub Date : 2022-05-16 DOI: 10.1515/corrrev-2021-0063
A. Imanian, M. Amiri
Abstract A phase field (PF) based electrochemical model is presented for simulation of galvanic corrosion. Distributions of electrolyte potential and current density on anode and cathode surfaces are obtained by coupling the PF variable with electrochemistry. Evolution of surface recession is naturally obtained by solving the PF equations without tracking the evolving boundary. Numerical implementation involves solving the governing equations on a fixed mesh. The sharp interface as the limit of the PF model is shown by an asymptotic analysis. Two benchmark problems are discussed: a magnesium alloy–mild steel couple exposed to 5% NaCl solution and crevice corrosion for nickel in 1 N sulfuric acid. A comparison is made considering available experimental data as well as other simulation data by an arbitrary Lagrangian–Eulerian method. Good agreement is obtained.
摘要提出了一种基于相场的电化学模型来模拟电偶腐蚀。通过将PF变量与电化学耦合,得到了阳极和阴极表面电解质电势和电流密度的分布。在不跟踪演化边界的情况下,通过求解PF方程自然地获得了表面衰退的演化。数值实现包括在固定网格上求解控制方程。作为PF模型极限的尖锐界面通过渐近分析得到。讨论了两个基准问题:暴露在5%NaCl溶液中的镁合金-软钢偶和镍在1N硫酸中的缝隙腐蚀。考虑到可用的实验数据以及通过任意拉格朗日-欧拉方法的其他模拟数据,进行了比较。达成了良好的协议。
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引用次数: 1
Corrosion sensitivity analysis of pipelines in CO2 and H2S coexisting environment in the South China Sea 南海CO2和H2S共存环境下管道腐蚀敏感性分析
IF 3.2 4区 材料科学 Q3 ELECTROCHEMISTRY Pub Date : 2022-05-16 DOI: 10.1515/corrrev-2021-0052
Huan Peng, Pan Fang, Heng Luo, Hechao Sun
Abstract The purpose of the present work is to investigate the corrosion sensitivity of pipelines of oil and gas wells under complex environmental conditions (i.e., the primary and secondary relationship of the influence of different environmental factors on pipeline corrosion). The orthogonal experiment is introduced to design the experimental scheme. The weight loss method is employed to analyze the average corrosion rate of N80 steel under different environmental conditions. And then the scanning electron microscope is used to explore the surface and cross-section corrosion morphology of the corrosion products. Besides, the components of corrosion products are obtained by the energy spectrum analysis. The research results indicate that H2S partial pressure is the most sensitive factor to the corrosion of N80 pipeline and the influence of CO2 partial pressure on corrosion of N80 pipeline is weaker than Cl− concentration and temperature in the South China Sea. The study can help the oil drilling engineering search for direct and effective corrosion inhibitors under complex environmental conditions.
摘要本工作的目的是研究复杂环境条件下油气井管道的腐蚀敏感性(即不同环境因素对管道腐蚀影响的主次关系)。采用正交试验法设计试验方案。采用失重法分析了N80钢在不同环境条件下的平均腐蚀速率。然后利用扫描电子显微镜观察腐蚀产物的表面和截面腐蚀形貌。此外,通过能谱分析得到了腐蚀产物的成分。研究结果表明,H2S分压是N80管道腐蚀的最敏感因素,CO2分压对N80管道腐蚀的影响弱于南海Cl−浓度和温度。该研究有助于石油钻井工程在复杂环境条件下寻找直接有效的缓蚀剂。
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引用次数: 0
Effect of imidazoline derivatives on the corrosion inhibition of Q235 steel in HCl medium: experimental and theoretical investigation 咪唑啉衍生物对HCl介质中Q235钢缓蚀性能的影响:实验与理论研究
IF 3.2 4区 材料科学 Q3 ELECTROCHEMISTRY Pub Date : 2022-04-08 DOI: 10.1515/corrrev-2021-0094
Pengjie Wang, Liping Xiong, Zhongyi He, Xin Xu, Jianqiang Hu, Qi Chen, Renhui Zhang, Jibin Pu, Lei Guo
Abstract In this work, two new imidazoline derivatives (SMF and SMIF) have been synthesized successfully, and their structure have been confirmed by IR, Raman, and NMR techniques. The corrosion inhibition ability and mechanism in HCl solution were proved by experimental and theoretical methods. The inhibition efficiency of SMIF was 94.69% in weight loss experiment, 95.99% (Tafel), and 95.30% (EIS) in electrochemistry. The corrosion inhibition mechanism is that SMF and SMIF form a stable protective film on the surface of Q235 and hinders charge transfer. EDS, FT-IR, and XPS all proved that SMF and SMIF inhibitors could stably adsorb on Q235 surface and form a protective film. The DFT and MD also proved the corrosion inhibiton mechanism. Experiments and theoretical calculations showed that SMF and SMIF exhibited excellent corrosion inhibition performance in 1 M HCl solution.
摘要本文成功合成了两个新的咪唑啉衍生物(SMF和SMIF),并通过红外光谱、拉曼光谱和核磁共振技术对其结构进行了确证。通过实验和理论验证了该材料在盐酸溶液中的缓蚀能力和缓蚀机理。SMIF在减肥实验中的抑制率为94.69%,在Tafel实验中的抑制率为95.99%,在电化学实验中的抑制率为95.30%。其缓蚀机理是SMF和SMIF在Q235表面形成稳定的保护膜,阻碍电荷转移。EDS、FT-IR和XPS均证明SMF和SMIF抑制剂能稳定吸附在Q235表面并形成保护膜。DFT和MD也证明了其缓蚀机理。实验和理论计算表明,SMF和SMIF在1 M HCl溶液中具有优异的缓蚀性能。
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引用次数: 0
Frontmatter Frontmatter
IF 3.2 4区 材料科学 Q3 ELECTROCHEMISTRY Pub Date : 2022-04-01 DOI: 10.1515/corrrev-2022-frontmatter2
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引用次数: 0
The corrosion behavior of HVOF TiAlNb coating in molten Zn-0.2 wt.% Al HVOF TiAlNb涂层在Zn-0.2wt.%Al熔体中的腐蚀行为
IF 3.2 4区 材料科学 Q3 ELECTROCHEMISTRY Pub Date : 2022-03-30 DOI: 10.1515/corrrev-2021-0073
H. Zeng, Li Maria Ma, Chuanqi Wang, J. Lin, Laiqi Zhang
Abstract In order to understand the corrosion behavior of high-velocity oxygen-fuel (HVOF) TiAlNb coatings in molten Zn-0.2 wt.% Al, the different kinds of TiAlNb coating were deposited on 316L stainless steel substrate and the corrosion tests in molten zinc were carried out. The coating morphologies, phase composition, and characteristics of HVOF TiAlNb coatings at different stages of immersion time were studied by means of scanning electron microscopy (SEM), X-ray diffraction (XRD), and energy-dispersive X-ray spectrometry (EDX). The results indicated that the HVOF sprayed TiAlNb intermetallic compound coatings have excellent corrosion resistance to molten zinc. The corrosion type of the HVOF TiAlNb coatings in molten Zn-0.2 wt.% Al is pitting corrosion and crack corrosion. In the whole corrosion stage of molten Zn-0.2 wt.% Al, the corrosion time has no effect on the phase compositions of the HVOF TiAlNb coatings.
摘要为了了解高速氧燃料(HVOF) TiAlNb涂层在Zn-0.2 wt.% Al熔液中的腐蚀行为,在316L不锈钢基体上沉积了不同类型的TiAlNb涂层,并进行了熔融锌中的腐蚀试验。采用扫描电镜(SEM)、x射线衍射(XRD)和能量色散x射线光谱(EDX)研究了不同浸渍时间下HVOF TiAlNb涂层的形貌、相组成和特性。结果表明:HVOF喷涂TiAlNb金属间化合物涂层具有优异的耐熔融锌腐蚀性能。HVOF TiAlNb涂层在Zn-0.2 wt.% Al熔液中的腐蚀类型为点蚀和裂纹腐蚀。在熔融Zn-0.2 wt.% Al的整个腐蚀阶段,腐蚀时间对HVOF TiAlNb涂层的相组成没有影响。
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引用次数: 1
Immersion corrosion behavior and electrochemical performance of laser cladded Ni60–CeO2 coatings in 5% NaCl solution 激光熔覆Ni60-CeO2涂层在5% NaCl溶液中的浸泡腐蚀行为及电化学性能
IF 3.2 4区 材料科学 Q3 ELECTROCHEMISTRY Pub Date : 2022-03-28 DOI: 10.1515/corrrev-2021-0096
Zhang Chao, K. Dejun
Abstract Ni60 coatings with the CeO2 mass fractions of 3%, 6%, and 9% were prepared on S355 steel. The microstructure and phases of obtained coatings were analyzed using an ultradepth of field microscope (UDFM) and X–ray diffraction (XRD), respectively. The effects of CeO2 mass fraction on the immersion corrosion behaviors and electrochemical performances of Ni60–CeO2 coatings in 5% NaCl solution were investigated. The results show that the immersion corrosion rates of Ni60–3%CeO2, –6%CeO2 and –9%CeO2 coatings are 37.1, 24.3 and 49.2 μm/year, respectively, in which the immersion corrosion resistance of Ni60–6%CeO2 coating is the best among the three kinds of coatings. The polarization resistances of Ni60–3%CeO2, –6%CeO2, and –9%CeO2 coatings are 169,867, 228,568, and 51,276 Ω⋅cm2, respectively, and the corresponding charge transfer resistances are 2.66 × 105, 6.68 × 105, and 6.40 × 105 Ω⋅cm2, respectively, showing that the Ni60–6%CeO2 coating presents the best electrochemical corrosion resistance in 5% NaCl solution.
在S355钢上制备了CeO2质量分数分别为3%、6%和9%的Ni60涂层。分别使用超景深显微镜(UDFM)和X射线衍射(XRD)分析了所获得涂层的微观结构和相。研究了CeO2质量分数对Ni60–CeO2涂层在5%NaCl溶液中的浸渍腐蚀行为和电化学性能的影响。结果表明,Ni60–3%CeO2、–6%CeO2和–9%CeO2涂层的浸入腐蚀速率分别为37.1、24.3和49.2μm/年,其中Ni60–6%Ce O2涂层的耐浸入腐蚀性在三种涂层中最好。Ni60–3%CeO2、–6%CeO2和–9%CeO2涂层的极化电阻分别为169867、228568和51276Ω·cm2,相应的电荷转移电阻分别为2.66×105、6.68×105和6.40×105Ω·cm2。
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引用次数: 1
Pitting initiation on 304 stainless steel in a chloride-contaminated pore solution under alternating temperature conditions 交变温度条件下304不锈钢在氯化物污染的孔隙溶液中的点蚀引发
IF 3.2 4区 材料科学 Q3 ELECTROCHEMISTRY Pub Date : 2022-03-24 DOI: 10.1515/corrrev-2021-0070
Xingguo Feng, Tianyi Zhang, Ruihu Zhu, Zheng Chen, Xiangyu Lu
Abstract Pitting initiation on 304 stainless steel grades was investigated in alternating temperature pore solutions to simulate pitting on stainless steel rebar in a tropical marine environment. The results suggested that a larger amplitude of alternating temperature heavily doped the passive film, reduced the film’s thickness and increased the (Fe3+ox + Fe3+hy)/Fe2+ox and Cr3+hy/Cr3+ox ratios in the film. Alternating temperatures more significantly degraded the passive film and intensified the pitting sensitivity on the stainless steel when compared with the average temperatures of the alternating temperature cycles. More pitting initiation sites were observed on the samples that experienced the 22–60 °C and 22–70 °C alternating temperature cycles than their counterparts in 50 °C and 60 °C solutions, respectively.
摘要研究了304不锈钢在交变温度孔隙溶液中的点蚀萌生,以模拟热带海洋环境中不锈钢钢筋的点蚀。结果表明,较大幅度的交变温度重掺杂钝化膜,降低了钝化膜的厚度,增加了钝化膜中(Fe3+ox+Fe3+hy)/Fe2+ox和Cr3+hy/Cr3+ox的比值。与交变温度循环的平均温度相比,交变温度更显著地降低了钝化膜,并增强了不锈钢上的点蚀敏感性。在经历22–60°C和22–70°C交替温度循环的样品上观察到的点蚀起始点分别比在50°C和60°C溶液中观察到的更多。
{"title":"Pitting initiation on 304 stainless steel in a chloride-contaminated pore solution under alternating temperature conditions","authors":"Xingguo Feng, Tianyi Zhang, Ruihu Zhu, Zheng Chen, Xiangyu Lu","doi":"10.1515/corrrev-2021-0070","DOIUrl":"https://doi.org/10.1515/corrrev-2021-0070","url":null,"abstract":"Abstract Pitting initiation on 304 stainless steel grades was investigated in alternating temperature pore solutions to simulate pitting on stainless steel rebar in a tropical marine environment. The results suggested that a larger amplitude of alternating temperature heavily doped the passive film, reduced the film’s thickness and increased the (Fe3+ox + Fe3+hy)/Fe2+ox and Cr3+hy/Cr3+ox ratios in the film. Alternating temperatures more significantly degraded the passive film and intensified the pitting sensitivity on the stainless steel when compared with the average temperatures of the alternating temperature cycles. More pitting initiation sites were observed on the samples that experienced the 22–60 °C and 22–70 °C alternating temperature cycles than their counterparts in 50 °C and 60 °C solutions, respectively.","PeriodicalId":10721,"journal":{"name":"Corrosion Reviews","volume":"40 1","pages":"247 - 262"},"PeriodicalIF":3.2,"publicationDate":"2022-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42840575","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Efforts made in enhancing corrosion inhibition potential of organic compounds: recent developments and future direction 提高有机化合物缓蚀潜力的努力:最新进展和未来方向
IF 3.2 4区 材料科学 Q3 ELECTROCHEMISTRY Pub Date : 2022-03-24 DOI: 10.1515/corrrev-2021-0101
C. Verma, M. Quraishi
Abstract Numerous attempts have been made to enhance the corrosion inhibition (%IE) of organic compounds. Each method has its own advantages and drawbacks. One of the important methods of enhancing %IE of organic compounds is their chemical functionalization which involves addition of polar functional groups, which enhances %IE due to combined effect of enhanced solubility and the number of adsorption centers. A large number of organic compounds derivatized through covalent and noncovalent functionalization are extensively used as corrosion inhibitors. It is well documented that properly functionalized organic compounds show higher %IE than the parent compounds. Other important factors that usually affect corrosion inhibition performance are transportability rate, immersion time, planarity, strength of electrolyte, and synergism. In the present article effect of these factors has been discussed. A proper understanding of these factors will help corrosion scientists and engineers in designing and synthesis (formulation) of effective corrosion inhibitors for industrial scale applications.
摘要人们已经进行了许多尝试来提高有机化合物的缓蚀性(%IE)。每种方法都有自己的优点和缺点。提高有机化合物%IE的重要方法之一是它们的化学官能化,该化学官能化涉及添加极性官能团,由于提高的溶解度和吸附中心的数量的综合作用,该化学功能化提高了%IE。通过共价和非共价功能化衍生的大量有机化合物被广泛用作缓蚀剂。充分证明,适当官能化的有机化合物显示出比母体化合物更高的%IE。通常影响缓蚀性能的其他重要因素是迁移率、浸渍时间、平面性、电解质强度和协同作用。本文讨论了这些因素的影响。正确理解这些因素将有助于腐蚀科学家和工程师设计和合成(配方)用于工业规模应用的有效缓蚀剂。
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引用次数: 3
Galvanic corrosion based on wire beam electrode technique: progress and prospects 基于线束电极技术的电腐蚀研究进展与展望
IF 3.2 4区 材料科学 Q3 ELECTROCHEMISTRY Pub Date : 2022-03-22 DOI: 10.1515/corrrev-2021-0100
J. Kou, Dongxu Ma
Abstract Galvanic corrosion is a type of localized corrosion that widely exists in all kinds of metal structures and causes severe damage, jeopardising the safety and dependability of equipment. This paper reviews the mechanism of galvanic corrosion and related influencing factors, including the material characteristics and geometric factors of the metal pair and environmental factors. As a unique surface testing technique, wire beam electrode (WBE) is widely used in various corrosion research fields represented by galvanic corrosion. On this basis, the research progress of the WBE technique in the field of galvanic corrosion is mainly reviewed from three perspectives. The experiments also proved that the WBE technique can well characterize the corrosion evolution progression and investigate the polarity reversal mechanisms. Finally, it is pointed out that the urgent scientific problems to be solved in the research of galvanic corrosion include: galvanic corrosion research in a variety of special environments; the mechanism of the galvanic couple reversal caused by the change of corrosion factors; the corrosion behavior of a complex coupling system composed of multiple metal connections; the development of corrosion prediction models.
电偶腐蚀是一种广泛存在于各种金属结构中的局部腐蚀,危害严重,危及设备的安全可靠性。本文综述了电偶腐蚀的机理及其影响因素,包括金属对的材料特性、几何因素和环境因素。钢丝束电极作为一种独特的表面检测技术,广泛应用于以电偶腐蚀为代表的各种腐蚀研究领域。在此基础上,主要从三个方面综述了WBE技术在电偶腐蚀领域的研究进展。实验还证明,WBE技术可以很好地表征腐蚀演变过程和研究极性反转机制。最后指出电偶腐蚀研究中亟待解决的科学问题包括:各种特殊环境下的电偶腐蚀研究;腐蚀因素变化导致电偶反转的机理;由多个金属连接组成的复杂耦合系统的腐蚀行为腐蚀预测模型的发展。
{"title":"Galvanic corrosion based on wire beam electrode technique: progress and prospects","authors":"J. Kou, Dongxu Ma","doi":"10.1515/corrrev-2021-0100","DOIUrl":"https://doi.org/10.1515/corrrev-2021-0100","url":null,"abstract":"Abstract Galvanic corrosion is a type of localized corrosion that widely exists in all kinds of metal structures and causes severe damage, jeopardising the safety and dependability of equipment. This paper reviews the mechanism of galvanic corrosion and related influencing factors, including the material characteristics and geometric factors of the metal pair and environmental factors. As a unique surface testing technique, wire beam electrode (WBE) is widely used in various corrosion research fields represented by galvanic corrosion. On this basis, the research progress of the WBE technique in the field of galvanic corrosion is mainly reviewed from three perspectives. The experiments also proved that the WBE technique can well characterize the corrosion evolution progression and investigate the polarity reversal mechanisms. Finally, it is pointed out that the urgent scientific problems to be solved in the research of galvanic corrosion include: galvanic corrosion research in a variety of special environments; the mechanism of the galvanic couple reversal caused by the change of corrosion factors; the corrosion behavior of a complex coupling system composed of multiple metal connections; the development of corrosion prediction models.","PeriodicalId":10721,"journal":{"name":"Corrosion Reviews","volume":"40 1","pages":"205 - 220"},"PeriodicalIF":3.2,"publicationDate":"2022-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48140776","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
期刊
Corrosion Reviews
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