Materials and Corrosion最新文献

Effect of Corrosion Wastage on the Limit States of Monopile‐Type Offshore Wind Turbines Under Combined Wind and Rotor Blade Rotation 腐蚀损耗对风力和叶片联合旋转下单桩式海上风力涡轮机极限状态的影响

Materials and Corrosion Pub Date : 2024-09-05 DOI: 10.1002/maco.202414378

Abdulaziz Sindi, Hyeong Jin Kim, Igor A. Chaves, Jeom Kee Paik

{"title":"Effect of Corrosion Wastage on the Limit States of Monopile‐Type Offshore Wind Turbines Under Combined Wind and Rotor Blade Rotation","authors":"Abdulaziz Sindi, Hyeong Jin Kim, Igor A. Chaves, Jeom Kee Paik","doi":"10.1002/maco.202414378","DOIUrl":"https://doi.org/10.1002/maco.202414378","url":null,"abstract":"In digital healthcare engineering (DHE) for aging monopile‐type offshore wind turbines, predictive health analysis is essential for robust future maintenance planning. This paper presents the development of a DHE module for the predictive health analysis of corroded monopile‐type offshore wind turbines, focusing on wind and rotor blade rotation effects. An empirical formula for predicting time‐variant corrosion wastage is derived from a statistical analysis of a decade‐long corrosion wastage database and applied to predict the corrosion depth of a 5 MW monopile‐type offshore wind turbine, serving as an illustrative example. Nonlinear finite element analyses using LS‐DYNA are performed on the corroded turbine tower under combined wind‐induced loads and rotor‐induced thrust forces. Two types of corrosion wastage, pitting, and uniform (general) corrosion, are considered. The health condition of the corroded tower is evaluated based on serviceability limit state and ultimate limit state criteria. The methodology developed in this paper will be integrated into the DHE system currently being developed by the authors for aging monopile‐type offshore wind turbines.","PeriodicalId":18223,"journal":{"name":"Materials and Corrosion","volume":"16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142180248","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of gap size on flange face corrosion 间隙大小对法兰面腐蚀的影响

Materials and Corrosion Pub Date : 2024-04-05 DOI: 10.1002/maco.202414367

Soroosh Hakimian, Abdel‐Hakim Bouzid, Lucas A. Hof

{"title":"Effect of gap size on flange face corrosion","authors":"Soroosh Hakimian, Abdel‐Hakim Bouzid, Lucas A. Hof","doi":"10.1002/maco.202414367","DOIUrl":"https://doi.org/10.1002/maco.202414367","url":null,"abstract":"Bolted flanged joints play a critical role in offshore wind turbine tower structures, serving as integral components that connect various sections of the tower. This research study employs electrochemical techniques to investigate the effect of gap dimensions, which determine the crevice gap thickness and crevice depth, on corrosion behavior of 321 stainless steel flange sample plates in a 3.5 wt% NaCl solution at 50°C. Gaskets are used in this study to create gaps between two flange surfaces. A novel fixture is utilized to simulate the applied stress on the gasket, fluid flow within the fixture, and the geometric aspects of the gasket and flange. The findings reveal that increasing the gap thickness from 1.58 to 6.35 mm results in a rise in the general corrosion rate of the flange surface from 0.09 to 1.03 mm y−1, and crevice corrosion initiation time increases from 0.23 to 3.12 h. Furthermore, reducing the crevice depth (d) from 7.49 to 0 mm leads to a decrease in the general corrosion rate from 0.09 mm y−1 to 0.04 µm y−1, and cases with d = 3.81 and d = 0 mm show no observable crevice corrosion after potentiostatic tests.","PeriodicalId":18223,"journal":{"name":"Materials and Corrosion","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140602371","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Cathodic protection of aluminium in seawater 铝在海水中的阴极保护

Materials and Corrosion Pub Date : 2024-03-27 DOI: 10.1002/maco.202314229

Ole Øystein Knudsen, Eystein Vada, Waldemar Krieger, Jan Bertram, Ivana Jevremovic, Håvard Wilson

引用次数: 0

Predicting corrosion for life estimation of ocean and coastal steel infrastructure 预测腐蚀以估算海洋和沿海钢铁基础设施的寿命

Materials and Corrosion Pub Date : 2024-03-27 DOI: 10.1002/maco.202314201

Rob E. Melchers, Robert Jeffrey, Igor A. Chaves, Robert B. Petersen

{"title":"Predicting corrosion for life estimation of ocean and coastal steel infrastructure","authors":"Rob E. Melchers, Robert Jeffrey, Igor A. Chaves, Robert B. Petersen","doi":"10.1002/maco.202314201","DOIUrl":"https://doi.org/10.1002/maco.202314201","url":null,"abstract":"Physical infrastructure in coastal and offshore locations often is constructed from mild and low alloy steels. These are prone to marine corrosion even with the application of protective coatings and cathodic protection. Particularly for high‐value assets such as energy facilities (wind farms, oil and gas production and subsea pipelines), the prediction of their safe and economic life is of much interest. Herein, a review is given of the modern development of models for the prediction of long‐term marine corrosion of steel exposed to various marine environments. These include immersion, tidal, splash and atmospheric zones and contact with sands and soils. The effects of temperature and water pollution are especially important, as is the ability of the steels or irons to form protective corrosion products. Comments are made also about other alloys such as copper‐nickels and aluminium. All show that corrosion, including pitting corrosion, develops with increased exposure time in a bimodal manner. The reasons for such behaviour are considered, together with the practical implications, important for containment structures such as pipelines, tanks and floating offshore energy platforms.","PeriodicalId":18223,"journal":{"name":"Materials and Corrosion","volume":"26 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140311943","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The performance of a self‐adherent foil system for the corrosion protection of steel substrates for offshore wind tower structures 用于海上风塔结构钢基体防腐保护的自粘箔系统的性能

Materials and Corrosion Pub Date : 2024-03-14 DOI: 10.1002/maco.202314218

Michael Irmer, Daniel Kelm, Tom Marquardt, Andreas W. Momber, K. Eiben, Sascha Buchbach

{"title":"The performance of a self‐adherent foil system for the corrosion protection of steel substrates for offshore wind tower structures","authors":"Michael Irmer, Daniel Kelm, Tom Marquardt, Andreas W. Momber, K. Eiben, Sascha Buchbach","doi":"10.1002/maco.202314218","DOIUrl":"https://doi.org/10.1002/maco.202314218","url":null,"abstract":"The application of multilayer organic protective coating systems with conventional liquid spray methods is complex, time‐ and energy‐consuming, and it requires extensive technical equipment. An alternative to these methods is the application of thin, self‐adherent foil systems directly to the steel substrate. The corrosion protection performance of newly developed foil systems was tested for various combinations of foil materials and pressure‐sensitive adhesives (with and without corrosion inhibitors) and different surface preparation parameters by means of accelerated cyclic laboratory tests with simulated offshore conditions. The adhesion properties were determined by means of peel tests. The tests were designed, by means of statistical methods (design of experiments, analysis of variance). A foil system with the following factor combination was found to provide an optimum performance: Surface preparation grade: Sa 2½; roughness: Rz = 50–75 µm; abrasive material: high‐carbon steel grit; adhesive layer thickness: 200 g/m2; inhibitor material: calcium aluminum polyphosphate silicate hydrate; foil material: polyvinylchloride (160 µm) + poly(methyl methacrylate) (40 µm).","PeriodicalId":18223,"journal":{"name":"Materials and Corrosion","volume":"96 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140150185","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Deterioration of marine offshore structures and subsea installations subjected to severely corrosive environment: A review 海洋近海结构和海底设施在严重腐蚀环境下的退化：综述

Materials and Corrosion Pub Date : 2024-02-15 DOI: 10.1002/maco.202314050

Ruilin Xia, Chen Jia, Yordan Garbatov

引用次数: 0

Causal discovery to understand hot corrosion 发现原因，了解热腐蚀

Materials and Corrosion Pub Date : 2024-02-12 DOI: 10.1002/maco.202314240

Akhil Varghese, Miguel Arana‐Catania, S. Mori, A. Encinas-Oropesa, Joy Sumner

引用次数: 0

EVENTS 活动

Materials and Corrosion Pub Date : 2024-02-09 DOI: 10.1002/maco.202470034

引用次数: 0

Identification of carbonation‐induced corrosion of steel in concrete by electrochemical testing 通过电化学测试识别混凝土中碳化引起的钢腐蚀

Materials and Corrosion Pub Date : 2024-02-08 DOI: 10.1002/maco.202414272

Samanbar Permeh, K. Lau

{"title":"Identification of carbonation‐induced corrosion of steel in concrete by electrochemical testing","authors":"Samanbar Permeh, K. Lau","doi":"10.1002/maco.202414272","DOIUrl":"https://doi.org/10.1002/maco.202414272","url":null,"abstract":"Carbonation‐induced corrosion of steel in concrete can allow for premature degradation of structures. Corrosion probes in health monitoring systems can assess concrete carbonation and steel corrosion rates. The electrochemical noise (EN) technique has advantages for corrosion sensing. Instrumented concrete columns were fitted with a carbonation chamber for accelerated testing. EN was assessed through statistical evaluation of noise time signatures, noise resistance, and spectral analysis. The mean noise potential for the electrodes showed electronegative potential and correspondingly high rms noise current, indicative of corrosion activation in carbonated concrete. The estimated corrosion rates obtained from the noise impedance were comparable to those resolved from the polarization resistance and noise resistance. The shot noise analysis indicated isolated spontaneous noise events associated with the activation of local steel anodes. The outcomes of the testing indicate that the placement of low‐cost sensors and passive EN measurements can be used to monitor the onset of carbonation‐induced corrosion of steel in concrete and provide estimates on corrosion rates.","PeriodicalId":18223,"journal":{"name":"Materials and Corrosion","volume":"37 9-10","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139853494","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

13C isotopic labeling to decipher the iron corrosion mechanisms in a carbonated anoxic environment 利用 13C 同位素标记破译碳酸缺氧环境中的铁腐蚀机制

Materials and Corrosion Pub Date : 2024-02-06 DOI: 10.1002/maco.202314203

Hélène Lotz, D. Neff, F. Mercier‐Bion, C. Bataillon, Nicolas Nuns, P. Dillmann

{"title":"13C isotopic labeling to decipher the iron corrosion mechanisms in a carbonated anoxic environment","authors":"Hélène Lotz, D. Neff, F. Mercier‐Bion, C. Bataillon, Nicolas Nuns, P. Dillmann","doi":"10.1002/maco.202314203","DOIUrl":"https://doi.org/10.1002/maco.202314203","url":null,"abstract":"A two‐step corrosion experiment was performed on a ferritic steel (Armco) in a synthetic solution representing the Callovo–Oxfordian at 120°C. After the development of a carbonated corrosion product layer (CPL) during the first 15 days of the experimental step, corrosion front progression was investigated using 13C marked carbonate species during the second 15 days experimental step. CPL was characterized at each step, in terms of morphology (scanning electron microscopy), composition (energy‐dispersive spectroscopy), and structure (µ‐Raman). 13C corrosion product locations were analyzed by time‐of‐flight secondary ion mass spectrometry. Results evidenced that after a step of generalized corrosion, iron corrosion continues locally at the metal/CPL interface. These results suggest that although a protective siderite layer formed on the iron surface after 15 days, a local dissolution of the carbonate layer at the M/CPL interface occurred. A galvanic effect is developed between the bared surface (anode) and the covered one (cathode). This activates iron oxidation. The precipitation of carbonate corrosion products to the metal/CPL interface is possible by the diffusion of 13CO32− ions from the bulk through the siderite layer.","PeriodicalId":18223,"journal":{"name":"Materials and Corrosion","volume":"2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139860651","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0