npj Materials Degradation最新文献_第6页

Corrosion inhibition mechanisms of 2-mercaptobenzothiazole on AA2024 T3 aluminium alloy. 2-巯基苯并噻唑对AA2024 T3铝合金的缓蚀机理

IF 7.6 2区材料科学

npj Materials Degradation Pub Date : 2025-01-01 Epub Date: 2025-08-03 DOI: 10.1038/s41529-025-00653-z

Vishant Garg, Maxime Magnan, Sandrine Zanna, Antoine Seyeux, Frédéric Wiame, Vincent Maurice, Philippe Marcus

{"title":"Corrosion inhibition mechanisms of 2-mercaptobenzothiazole on AA2024 T3 aluminium alloy.","authors":"Vishant Garg, Maxime Magnan, Sandrine Zanna, Antoine Seyeux, Frédéric Wiame, Vincent Maurice, Philippe Marcus","doi":"10.1038/s41529-025-00653-z","DOIUrl":"10.1038/s41529-025-00653-z","url":null,"abstract":"The mechanisms of 2-mercaptobenzothiazole (2-MBT) adsorption and corrosion inhibition on the aerospace AA2024 T3 aluminium alloy have been investigated using electrochemistry and advanced surface analyses. Electrochemical methods were used to measure the degree of corrosion protection in neutral chloride media, while advanced surface analysis techniques were employed to determine the interfacial interaction and inhibitor action mechanisms. It is shown that 2-MBT effectively inhibits corrosion of the alloy, reducing its susceptibility to corrosion attack and its corrosion rate. Surface analysis, including the use of ToF-SIMS 3-D chemical mapping, confirms 2-MBT adsorption on partially dealloyed intermetallic particles (IMPs) along with the presence of a thin 2-MBT layer on the top-most alloy surface. Chloride ions breakdown the native oxide film, allowing 2-MBT to adsorb on IMPs, thereby inhibiting further localized corrosion on these particles, while the 2-MBT layer on the surface protects the alloy matrix from surface oxidation.","PeriodicalId":19270,"journal":{"name":"npj Materials Degradation","volume":"9 1","pages":"100"},"PeriodicalIF":7.6,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12317847/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144784885","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Corrosion type identification in flanged joints using recurrent neural networks on electrochemical noise measurements. 基于电化学噪声测量的递归神经网络法兰连接腐蚀类型识别。

IF 6.6 2区材料科学

npj Materials Degradation Pub Date : 2025-01-01 Epub Date: 2025-07-15 DOI: 10.1038/s41529-025-00638-y

Soroosh Hakimian, Abdel-Hakim Bouzid, Lucas A Hof

{"title":"Corrosion type identification in flanged joints using recurrent neural networks on electrochemical noise measurements.","authors":"Soroosh Hakimian, Abdel-Hakim Bouzid, Lucas A Hof","doi":"10.1038/s41529-025-00638-y","DOIUrl":"10.1038/s41529-025-00638-y","url":null,"abstract":"Bolted flanged joints are essential for connecting piping and process equipment but are vulnerable to localized corrosion that leads to sudden, unpredictable leaks. Electrochemical noise (EN) measurements can detect such corrosion, yet processing EN data is time-consuming and requires expertise. This study applies recurrent neural networks (RNNs) to automate corrosion type identification on flange surfaces using raw EN signals from spontaneous electrochemical reactions. In this work, supervised, hybrid, and unsupervised ML approaches are evaluated using experimentally obtained EN data. Among supervised models, the long short-term memory (LSTM) model achieves 93.62% accuracy. A hybrid method combining LSTM autoencoder features with a random forest classifier improves accuracy to 97.85%. An unsupervised method using LSTM autoencoder, principal component analysis, and k-means clustering also shows strong potential for real-time corrosion monitoring. Automated identification of corrosion types on flanged joints supports more effective material protection strategies, reducing the risk of failure in critical infrastructure.","PeriodicalId":19270,"journal":{"name":"npj Materials Degradation","volume":"9 1","pages":"88"},"PeriodicalIF":6.6,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12259464/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144649912","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of plastic deformation on the hydrogen embrittlement of ferritic high strength steel. 塑性变形对铁素体高强钢氢脆的影响。

IF 7.5 2区材料科学

npj Materials Degradation Pub Date : 2025-01-01 Epub Date: 2025-05-02 DOI: 10.1038/s41529-025-00592-9

Tim Boot, Pascal Kömmelt, Ruud W A Hendrikx, Amarante J Böttger, Vera Popovich

引用次数: 0

RAAC panels can suddenly collapse before any warning of corrosion-induced surface cracking. RAAC面板可能在任何腐蚀引起的表面开裂警告之前突然倒塌。

IF 6.6 2区材料科学

npj Materials Degradation Pub Date : 2025-01-01 Epub Date: 2025-05-07 DOI: 10.1038/s41529-025-00596-5

Evžen Korec, Peter Grassl, Milan Jirásek, Hong S Wong, Emilio Martínez-Pañeda

{"title":"RAAC panels can suddenly collapse before any warning of corrosion-induced surface cracking.","authors":"Evžen Korec, Peter Grassl, Milan Jirásek, Hong S Wong, Emilio Martínez-Pañeda","doi":"10.1038/s41529-025-00596-5","DOIUrl":"https://doi.org/10.1038/s41529-025-00596-5","url":null,"abstract":"The collapse of reinforced autoclaved aerated concrete (RAAC) panels has attracted considerable public and academic interest. As detailed experimental data are not yet available and replicating the natural corrosion process requires years or decades, computational modelling is essential to understand under which conditions corrosion remains concealed. The very high porosity of RAAC is widely suspected to be a major contributing factor. However, current corrosion-induced cracking models are known to struggle with capturing the role of concrete porosity. To remedy this critical deficiency, we propose to enrich corrosion-induced cracking modelling with the analytical solution of reactive transport equations governing the precipitation of rust and a porosity-dependent description of diffusivity. With this, the corrosion concealment in RAAC panels is studied computationally for the first time, revealing that RAAC panels can suddenly collapse before any warning of corrosion-induced surface cracking and allowing to map the conditions most likely to result in sudden collapse.","PeriodicalId":19270,"journal":{"name":"npj Materials Degradation","volume":"9 1","pages":"44"},"PeriodicalIF":6.6,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12058510/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144015189","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

In-situ laboratory monitoring of cyanobacterial influence on calcite dissolution. 蓝藻对方解石溶解影响的实验室原位监测。

IF 7.6 2区材料科学

npj Materials Degradation Pub Date : 2025-01-01 Epub Date: 2025-11-22 DOI: 10.1038/s41529-025-00712-5

Luca Stigliano, Bastien Wild, Karim Benzerara, Philippe Ackerer, Cynthia Travert, Kevin G Knauss, Damien Daval

{"title":"In-situ laboratory monitoring of cyanobacterial influence on calcite dissolution.","authors":"Luca Stigliano, Bastien Wild, Karim Benzerara, Philippe Ackerer, Cynthia Travert, Kevin G Knauss, Damien Daval","doi":"10.1038/s41529-025-00712-5","DOIUrl":"10.1038/s41529-025-00712-5","url":null,"abstract":"Microbial interactions with mineral surfaces play a critical role in biogeochemical cycles, yet their dynamic coupling with mineral reactivity remains poorly constrained. Here, in-situ time-resolved monitoring of topographic evolution of the calcite-bacteria interface was performed using a fluid cell coupled to vertical scanning interferometry (VSI). The cyanobacterial strain Chroococcidiopsis thermalis PCC 7203 was inoculated onto polished and pre-etched calcite surfaces under conditions strongly undersaturated or closer to calcite saturation. The formation of localized topographic highs, produced by dissolution of surrounding material, was found to correlate with the residence time of attached cells at Ω = 0.0, but not at Ω = 0.3. Physiological tests suggested that the composition of the bulk fluid modulates microbial activity, thereby influencing interfacial pH, and in turn, calcite reactivity. Moreover, calcite reactivity was found to exert a stronger control on bacterial detachment dynamics than initial surface roughness or surface charge under the tested conditions. These findings emphasize the importance of microscale feedbacks between microbial colonization and mineral weathering, and demonstrate the potential of in-situ interferometric imaging for probing the dynamics of processes at microbe-mineral interfaces.","PeriodicalId":19270,"journal":{"name":"npj Materials Degradation","volume":"9 1","pages":"158"},"PeriodicalIF":7.6,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12727514/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145834468","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Oxidation behaviour of EUROFER-97 under simulated water-cooled lithium lead breeder blanket conditions. 模拟水冷锂铅增殖包层条件下EUROFER-97的氧化行为。

IF 6.6 2区材料科学

npj Materials Degradation Pub Date : 2025-01-01 Epub Date: 2025-05-13 DOI: 10.1038/s41529-025-00600-y

Liberato Volpe, Dora Capone, Peter Andresen, Eric Prestat, Fabio Scenini

{"title":"Oxidation behaviour of EUROFER-97 under simulated water-cooled lithium lead breeder blanket conditions.","authors":"Liberato Volpe, Dora Capone, Peter Andresen, Eric Prestat, Fabio Scenini","doi":"10.1038/s41529-025-00600-y","DOIUrl":"https://doi.org/10.1038/s41529-025-00600-y","url":null,"abstract":"The effect of water chemistry, surface condition, alkalizing agent (LiOH vs. KOH), and Zn addition was investigated at 300 °C on the oxidation behaviour of reduced activation ferritic martensitic (RAF/M) EUROFER-97. EUROFER-97 is the proposed material for the water-cooled lithium lead breeder blanket (WCLL-BB) section of DEMO, but its behaviour under elevated temperature hydrogenated water has never been investigated. Advanced material characterization showed that, despite its relatively low chromium content, EUROFER-97 exhibits high corrosion resistance. This is because EUROFER-97 is protected by an inner polycrystalline FeCr2O4 layer, formed regardless of the water chemistry and surface preparation investigated. The outer non-protective oxide consists of Fe3O4 crystallites, which were refined when KOH was used. When injected, Zn was observed only on top of the outer crystallites without diffusing into the inner oxide layer. These findings demonstrate the excellent oxidation behaviour of EUROFER-97 in the proposed water chemistry, highlighting its suitability for the WCLL-BB section.","PeriodicalId":19270,"journal":{"name":"npj Materials Degradation","volume":"9 1","pages":"50"},"PeriodicalIF":6.6,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12074980/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144079279","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mechanisms of corrosive freeze-thaw damage in AA7075 using time-resolved x-ray microtomography and correlative electron microscopy 利用时间分辨x射线显微断层扫描和相关电子显微镜研究AA7075腐蚀冻融损伤机制

IF 6.6 2区材料科学

npj Materials Degradation Pub Date : 2024-12-27 DOI: 10.1038/s41529-024-00547-6

Ankit Kumar, Eshan Ganju, Daniel Sinclair, Nikhilesh Chawla

{"title":"Mechanisms of corrosive freeze-thaw damage in AA7075 using time-resolved x-ray microtomography and correlative electron microscopy","authors":"Ankit Kumar, Eshan Ganju, Daniel Sinclair, Nikhilesh Chawla","doi":"10.1038/s41529-024-00547-6","DOIUrl":"10.1038/s41529-024-00547-6","url":null,"abstract":"Aluminum aircraft structures experience severe corrosion from exposure to aggressive chloride environments, including cyclic freezing and thawing of residual water during ascent and descent, introducing a cyclic freeze-thaw component to the corrosion process. While corrosion mechanisms in aircraft structures are well studied at constant temperatures, the microstructural and mechanistic behavior under freeze-and-thaw conditions remains unclear. To understand transformations induced by cyclic temperature, we used three-dimensional (3D) x-ray computed tomography (XCT) with scanning electron microscopy (SEM) to study the behavior of AA7075-T651 in a simulated seawater environment undergoing freezing and thawing cycles. Rods immersed in saltwater were thermally cycled above and below freezing, and structural changes were intermittently characterized in 3D. Under freeze-thaw conditions, cracks initiated within corrosion pits through ice expansion, causing progressive crevice growth and spalling along inclusions and grain boundaries with intermediate misorientation angles. Damage mechanisms in freeze-thaw and conventional corrosion environments are compared, with correlations to microstructural evolution.","PeriodicalId":19270,"journal":{"name":"npj Materials Degradation","volume":" ","pages":"1-12"},"PeriodicalIF":6.6,"publicationDate":"2024-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41529-024-00547-6.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142890101","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mechanisms of intergranular corrosion and self-healing in high temperature aged lean duplex stainless steel 2404 高温时效贫双相不锈钢2404的晶间腐蚀与自愈机制

IF 6.6 2区材料科学

npj Materials Degradation Pub Date : 2024-12-20 DOI: 10.1038/s41529-024-00541-y

R. Silva, C. L. Kugelmeier, C. B. Martins Junior, P. H. F. Oliveira, D. C. C. Magalhães, A. H. Plaine, R. Magnabosco, C. A. D. Rovere

{"title":"Mechanisms of intergranular corrosion and self-healing in high temperature aged lean duplex stainless steel 2404","authors":"R. Silva, C. L. Kugelmeier, C. B. Martins Junior, P. H. F. Oliveira, D. C. C. Magalhães, A. H. Plaine, R. Magnabosco, C. A. D. Rovere","doi":"10.1038/s41529-024-00541-y","DOIUrl":"10.1038/s41529-024-00541-y","url":null,"abstract":"This study investigated the intergranular corrosion mechanism of lean duplex stainless steel 2404 after long-term aging at 700 and 800 °C using electrochemical methods, thermodynamic calculations, and kinetic models. At 700 °C, σ phase growth significantly increases the degree of sensitization (DOS) and decreases the breakdown potential (Eb). At 800 °C, a self-healing process at the ferrite/σ interface helps recover Cr and Mo depleted regions, reducing DOS after 72 h of aging and stabilizing Eb after 24 h at higher electrode potentials. However, the corrosion process is intensified at the σ/austenite interface, compromising intergranular corrosion resistance during prolonged aging. The findings show that complete recovery of corrosion resistance via self-healing is not achieved when high fractions of σ phase are formed. In addition, DICTRA calculations effectively evaluate corrosion resistance degradation from σ phase growth, providing deeper insights into the intergranular corrosion mechanism.","PeriodicalId":19270,"journal":{"name":"npj Materials Degradation","volume":" ","pages":"1-16"},"PeriodicalIF":6.6,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41529-024-00541-y.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142875308","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Feedback effect of the size of mineral particles on the molecular mechanisms employed by Caballeronia mineralivorans PML1(12) to weather minerals 矿物颗粒大小对Caballeronia mineralivorans PML1（12）风化矿物分子机制的反馈效应

IF 6.6 2区材料科学

npj Materials Degradation Pub Date : 2024-12-20 DOI: 10.1038/s41529-024-00544-9

Cintia Blanco Nouche, Carine Cochet, Marie-Pierre Turpault, Stéphane Uroz

{"title":"Feedback effect of the size of mineral particles on the molecular mechanisms employed by Caballeronia mineralivorans PML1(12) to weather minerals","authors":"Cintia Blanco Nouche, Carine Cochet, Marie-Pierre Turpault, Stéphane Uroz","doi":"10.1038/s41529-024-00544-9","DOIUrl":"10.1038/s41529-024-00544-9","url":null,"abstract":"Mineral dissolution by bacteria is thought to depend on mineral properties, solution chemistry, and the carbon sources metabolized. To investigate whether mineral particle size could impact the effectiveness of weathering and the molecular mechanisms employed by bacteria, the strain Caballeronia mineralivorans PML1(12) was considered. Through microcosm and kinetic experiments, we quantified changes in biotite dissolution, bacterial growth, siderophore biosynthesis, and acidification. The use of different solution chemistries, carbon sources, and particle sizes (from <20 to 500 µm) allowed us to decipher the relative role of acidification- and chelation-driven mineral weathering by bacteria. Results revealed a faster dissolution for smaller particles (<100 µm) that strongly affected both solution chemistry and bacterial physiology, while larger particles (>100 µm) showed a slower and steady dissolution with minimal impact on bacterial processes. These findings underscore the influence and feedback effects of particle size on the dynamics of dissolution and the mechanisms employed by bacteria.","PeriodicalId":19270,"journal":{"name":"npj Materials Degradation","volume":" ","pages":"1-11"},"PeriodicalIF":6.6,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41529-024-00544-9.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142875314","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Assessing the feasibility of using a data-driven corrosion rate model for optimizing dosages of corrosion inhibitors 评估使用数据驱动的腐蚀速率模型来优化缓蚀剂剂量的可行性

IF 6.6 2区材料科学

npj Materials Degradation Pub Date : 2024-12-19 DOI: 10.1038/s41529-024-00545-8

Chamanthi Denisha Jayaweera, David Fernandes del Pozo, Ivaylo Plamenov Hitsov, Maxime Van Haeverbeke, Thomas Diekow, Arne Verliefde, Ingmar Nopens

引用次数: 0