Corrosion Science最新文献_第3页

Design of high temperature oxidation-resistant high-entropy alloys via machine learning and natural mixing process 利用机器学习和自然混合工艺设计高温抗氧化高熵合金

IF 7.4 1区材料科学

Corrosion Science Pub Date : 2025-05-20 DOI: 10.1016/j.corsci.2025.113047

Ziqiang Dong , Chao Zhou , Qiliang Huang , Zhengkun Mou , Ming Li , Hongyu Zhou , Wenyue Zheng

{"title":"Design of high temperature oxidation-resistant high-entropy alloys via machine learning and natural mixing process","authors":"Ziqiang Dong , Chao Zhou , Qiliang Huang , Zhengkun Mou , Ming Li , Hongyu Zhou , Wenyue Zheng","doi":"10.1016/j.corsci.2025.113047","DOIUrl":"10.1016/j.corsci.2025.113047","url":null,"abstract":"<div><div>High-entropy alloys (HEAs) have attracted significant attention for their exceptional properties, particularly their potential in high-temperature engineering applications. However, the large compositional space of HEAs presents challenges in alloy design to achieve optimal properties. In this study, we developed an integrated approach that combines machine learning (ML) and a natural mixing process to guide the design of HEAs with enhanced high-temperature stability. ML was used to assist in element selection and oxidation prediction, while the natural mixing and short-term high-temperature exposure guided the formulation of HEA compositions with superior thermal stability. Among the ML models evaluated, the Gradient Boosting Regression (GBR) model showed the highest prediction accuracy (R<sup>2</sup>= 0.94). A series of HEAs were designed using the integrated approach, and their oxidation behavior was thoroughly investigated. The designed alloy H3 (AlCrCu<sub>0.4</sub>FeNi) showed excellent oxidation resistance (k<sub>p</sub>=1.19 ×10<sup>−2</sup> mg<sup>2</sup>/cm<sup>4</sup>·h) with a high hardness (865 HV), demonstrating its potential for high-temperature applications.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"255 ","pages":"Article 113047"},"PeriodicalIF":7.4,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144166247","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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: 0

HiPIMS-enabled Ti-doped amorphous carbon coatings for high-performance PEMFC bipolar plates 用于高性能PEMFC双极板的hipims掺杂钛非晶碳涂层

IF 7.4 1区材料科学

Corrosion Science Pub Date : 2025-05-20 DOI: 10.1016/j.corsci.2025.113053

Zhiqiang Che , Yi Feng , Hui Chen , Xiaopan Wu , Haoqi Wang , Wenping Yuan , Qili Jiang , Li Hou , Yixiang Ou , Feiqiang Li , Peng-an Zong

{"title":"HiPIMS-enabled Ti-doped amorphous carbon coatings for high-performance PEMFC bipolar plates","authors":"Zhiqiang Che , Yi Feng , Hui Chen , Xiaopan Wu , Haoqi Wang , Wenping Yuan , Qili Jiang , Li Hou , Yixiang Ou , Feiqiang Li , Peng-an Zong","doi":"10.1016/j.corsci.2025.113053","DOIUrl":"10.1016/j.corsci.2025.113053","url":null,"abstract":"<div><div>Amorphous carbon (<em>α</em>-C) coatings play a critical role in enhancing the electrical conductivity, corrosion resistance, and chemical stability of stainless steel bipolar plates in proton exchange membrane fuel cells (PEMFCs). However, traditional deposition methods, such as magnetron sputtering and chemical vapor deposition, suffer from limitations including suboptimal sp²/sp³ ratios, high residual stress, and insufficient mechanical durability, restricting their application. This study develops Ti-doped <em>α</em>-C coatings using a combined high power impulse magnetron sputtering (HiPIMS) and pulsed DC magnetron sputtering (PDCMS) approach to overcome these challenges. By varying Ti target power (0–1 kW), the microstructure, electrical properties, corrosion resistance, and mechanical performance of the coatings were systematically investigated. Ti doping increased the sp²/sp³ ratio and promoted low-resistivity carbide phase formation, reducing the interfacial contact resistance from 5.8 to 2.6 mΩ cm<sup>2</sup> (0.6 kW). At an optimal Ti target power of 0.6 kW, the coatings achieved excellent corrosion resistance, with a corrosion current density of 0.12 μA cm<sup>−2</sup>. Additionally, mechanical properties were significantly enhanced, with hardness reaching 13.64 GPa and elastic recovery improving to 43 %. These findings demonstrate that Ti-doped <em>α</em>-C coatings not only address the limitations of traditional <em>α</em>-C deposition techniques but also offer a cost-effective, high-performance solution for stainless steel bipolar plates, advancing the commercialization of PEMFCs.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"254 ","pages":"Article 113053"},"PeriodicalIF":7.4,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144098419","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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: 0

Gravity-driven corrosion effects in microbiologically influenced corrosion: Circumferential corrosion distribution of 90/ 10 Cu-Ni alloy by Desulfovibrio vulgaris 微生物影响腐蚀中的重力驱动腐蚀效应：普通脱硫弧菌对90/ 10 Cu-Ni合金的环向腐蚀分布

IF 7.4 1区材料科学

Corrosion Science Pub Date : 2025-05-19 DOI: 10.1016/j.corsci.2025.113049

Congrui Zhu , Yanan Pu , Zihao Guo , Yue Hou , Su Hou , Fan Feng , Bo Zhang , Caichang Dong , Delin Tang , Shougang Chen

{"title":"Gravity-driven corrosion effects in microbiologically influenced corrosion: Circumferential corrosion distribution of 90/ 10 Cu-Ni alloy by Desulfovibrio vulgaris","authors":"Congrui Zhu , Yanan Pu , Zihao Guo , Yue Hou , Su Hou , Fan Feng , Bo Zhang , Caichang Dong , Delin Tang , Shougang Chen","doi":"10.1016/j.corsci.2025.113049","DOIUrl":"10.1016/j.corsci.2025.113049","url":null,"abstract":"<div><div>This work systematically examined the impact of gravity on <em>Desulfovibrio vulgaris</em> deposition, biofilm formation, and microbiologically influenced corrosion (MIC) behavior on 90/10 copper-nickel (Cu-Ni) at different clock positions (6 P, 9 P, and 12 P). Gravity exerted a significant influence on biofilm formation and the severity of MIC on 90/10 Cu-Ni alloy. The circumferential corrosion distribution on the inner surface of alloy pipeline exhibited substantial positional variation, with the most severe corrosion occurring at 6 P. Under static incubation conditions, the <em>D. vulgaris</em> sessile cell count at 6 P was 28 % higher than 12 P, and the weight loss at 6 P reached 8.6 ± 0.5 mg/cm<sup>2</sup>, which was 1.3-fold and 1.7-fold greater than that at 9 P and 12 P, respectively. The thickness of <em>D. vulgaris</em> biofilm and MIC progression followed the trend: 6 P > 9 P > 12 P. Under dynamic incubation conditions, the differences in MIC across the positions diminished due to shear stress modulating the development of the <em>D. vulgaris</em> biofilm. Stirring mitigated gravitational effects, promoting a more uniform <em>D. vulgaris</em> biofilm distribution and MIC rate.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"254 ","pages":"Article 113049"},"PeriodicalIF":7.4,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144098531","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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: 0

Understanding of the stress assisted cracking behavior of Ni-based alloy GH3535 in molten LiF-NaF-KF salt ni基合金GH3535在LiF-NaF-KF熔盐中的应力辅助开裂行为

IF 7.4 1区材料科学

Corrosion Science Pub Date : 2025-05-16 DOI: 10.1016/j.corsci.2025.113038

Wenjun Liang , Xiaoli Li , Yumiao Wang , Bin Leng , Tao Wu , Litao Chang

{"title":"Understanding of the stress assisted cracking behavior of Ni-based alloy GH3535 in molten LiF-NaF-KF salt","authors":"Wenjun Liang , Xiaoli Li , Yumiao Wang , Bin Leng , Tao Wu , Litao Chang","doi":"10.1016/j.corsci.2025.113038","DOIUrl":"10.1016/j.corsci.2025.113038","url":null,"abstract":"<div><div>Environmentally assisted cracking of structural materials is an important concern to the safe operation of advanced nuclear reactors. In the present study, the responses of Ni-based alloy GH3535 to the combined effects of tensile stress and molten fluoride salt corrosion was investigated using constant load tensile testing alongside with specimens tested in Ar. The results indicated that extensive intergranular cracking occurred in specimens tested in both environments, however, specimens tested in the molten salt had a much faster displacement/creep rate than those tested in Ar. All the cracks were internally initiated within the sub-surface region of the specimens, with no cracking observed in the substrate. For specimens tested in Ar, most of the cracks were found to be beneath the surface, whereas the cracks propagated to the surface and penetrated deeper to the substrate for specimens tested in the molten salt. All the cracks were confirmed to be creep cracks, and it was found that initiation of the internal creep cracks was promoted by the deformation induced by the surface machining process. Furthermore, increased creep rates for specimens tested in molten salt was due to stress concentration at the crack tips, caused by the fracture of the interconnected, topmost recrystallized fine-grained layer.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"254 ","pages":"Article 113038"},"PeriodicalIF":7.4,"publicationDate":"2025-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144070334","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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: 0

Hot corrosion behavior of 304 & P91 graded composite transition joint under molten sulfate salts 硫酸盐熔盐作用下304 & P91级配复合过渡接头的热腐蚀行为

IF 7.4 1区材料科学

Corrosion Science Pub Date : 2025-05-16 DOI: 10.1016/j.corsci.2025.113033

Ting Sun , Shanshan Hu , Alexander I. Ikeuba , Yuying Wen , Xingru Tan , Youyuan Zhang , Haiyang Qian , Yanli Wang , Zhili Feng , Bai Cui , Xingbo Liu

{"title":"Hot corrosion behavior of 304 & P91 graded composite transition joint under molten sulfate salts","authors":"Ting Sun , Shanshan Hu , Alexander I. Ikeuba , Yuying Wen , Xingru Tan , Youyuan Zhang , Haiyang Qian , Yanli Wang , Zhili Feng , Bai Cui , Xingbo Liu","doi":"10.1016/j.corsci.2025.113033","DOIUrl":"10.1016/j.corsci.2025.113033","url":null,"abstract":"<div><div>A novel graded composite transition joint (GCTJ) between AISI 304 stainless steel and ASTM A335 P91 steel, has been demonstrated remarkablely superior creep performance compared to the conventional dissimilar metal weldment (DMW) under equivalent conditions. However, this advance is challenged by hot corrosion under salt deposition at elevated temperatures. This study investigates the hot corrosion behavior of 304&P91 GCTJ exposed to sulfate salts at 700°C. Compared to the 304 steel, corrosion attacks initiate in the P91 triangle, where the dual-phase microstructure of ferrite and tempered martensite significantly influences pitting initiation. Anodic dissolution mainly occurs within the tempered martensite due to more vulnerable sites within the tempered martensite. With prolonged exposure, corrosion propagates across both phases, and the corrosion depth within the P91 triangle is related to the exposed surface area ratio between 304 and P91. Electrochemical analysis reveals the occurrence of galvanic corrosion between the 304 and P91, with a positive linear relationship between anodic dissolution current density (I<sub>a</sub>) and the exposed surface area ratio between 304 and P91 in molten salts, further emphasizing the critical impact of this ratio on the corrosion severity in the P91 triangle. These findings underscore the importance of transition zone design optimization in mitigating localized corrosion.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"254 ","pages":"Article 113033"},"PeriodicalIF":7.4,"publicationDate":"2025-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144098420","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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: 0

Corrosion behaviour of 316L stainless steel under stress in artificial seawater droplet exposure at elevated temperature and humidity 高温高湿条件下316L不锈钢在人工海水液滴中的应力腐蚀行为

IF 7.4 1区材料科学

Corrosion Science Pub Date : 2025-05-16 DOI: 10.1016/j.corsci.2025.113039

M.C. Ozturk , L. Coghlan , M. Zimina , R. Akid , T.L. Martin , N.O. Larrosa

{"title":"Corrosion behaviour of 316L stainless steel under stress in artificial seawater droplet exposure at elevated temperature and humidity","authors":"M.C. Ozturk , L. Coghlan , M. Zimina , R. Akid , T.L. Martin , N.O. Larrosa","doi":"10.1016/j.corsci.2025.113039","DOIUrl":"10.1016/j.corsci.2025.113039","url":null,"abstract":"<div><div>Chloride-induced pitting corrosion and stress corrosion cracking could present potential damage mechanisms in high activity waste (HAW) containers made of austenitic stainless steels operating at room temperature, elevated temperature, and humidity. In this paper, atmospheric corrosion tests were conducted on cold-rolled 316 L stainless steel (SS) specimens—both sensitised and non-sensitised—subjected to varying levels of applied stress (ranging from 0 to 1.5 times the yield strength, σ<sub>y</sub>) in the presence of 0.546 mol/L artificial seawater droplets. A subset of the samples was thermally sensitised at 550°C for 150 hours. The experiments were conducted at room temperature (RT) and humidity levels, and at 50°C and 60 % relative humidity (RH), using a custom-made environmental corrosion chamber for 672 hours. Stress was applied using a 4-point bending rig, and artificial seawater droplets were delivered via a SS 304 medical syringe needle. Correlative microscopy (SEM and EBSD), optical profilometry, and dry vapor etching techniques revealed pit initiation sites and growth predominantly occurring at grain boundaries along the rolling direction. Sensitisation and increased applied stress led to a rise in both the number and size of corrosion pits, as observed in experiments conducted both at room temperature and in the corrosion chamber.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"254 ","pages":"Article 113039"},"PeriodicalIF":7.4,"publicationDate":"2025-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144115867","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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: 0

Design and evaluation method of erosion-resistant and wear-resistant CoCrFeMnNi high-entropy alloy coating based on molecular dynamics simulation and machine learning 基于分子动力学模拟和机器学习的CoCrFeMnNi高熵合金耐冲磨涂层设计与评价方法

IF 7.4 1区材料科学

Corrosion Science Pub Date : 2025-05-16 DOI: 10.1016/j.corsci.2025.113048

Yunhai Liu, Jiawei Xie, Lang Tang

{"title":"Design and evaluation method of erosion-resistant and wear-resistant CoCrFeMnNi high-entropy alloy coating based on molecular dynamics simulation and machine learning","authors":"Yunhai Liu, Jiawei Xie, Lang Tang","doi":"10.1016/j.corsci.2025.113048","DOIUrl":"10.1016/j.corsci.2025.113048","url":null,"abstract":"<div><div>The CoCrFeMnNi high-entropy alloy is widely regarded as one of the most promising materials for wear resistance, particularly in mitigating erosion failure in critical components of oil and gas equipment. However, its performance is significantly influenced by factors such as elemental composition and proportion. Therefore, determining the optimal parameters for preparing erosion-resistant alloys has become a significant challenge. In this study, for the first time, we establish an erosion resistance design evaluation system that integrates molecular dynamics and machine learning. This system incorporates parameters such as pressure, friction coefficient, and the number of wear atoms, and a high-performance machine learning model is trained to predict the optimal erosion-resistant coating and verify. Furthermore, to enhance the applicability of the design evaluation method, the trained machine learning model can be directly employed to guide the alloy component design under different crystal orientations and structures post-verification. The results of this study offer significant theoretical insights for the development of the optimal erosion-resistant CoCrFeMnNi high-entropy alloy for oil and gas equipment, while also substantially reducing both experimental and temporal costs.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"254 ","pages":"Article 113048"},"PeriodicalIF":7.4,"publicationDate":"2025-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144084137","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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: 0

Suppression of CMAS penetration by synergistic modulation of reaction-phase barrier in multi-rare-earth co-doped zirconia 多稀土共掺杂氧化锆反应相势垒协同调制对CMAS穿透的抑制作用

IF 7.4 1区材料科学

Corrosion Science Pub Date : 2025-05-15 DOI: 10.1016/j.corsci.2025.113037

Yao-Xu Zan, Chang-Sheng Li, Peng-Shuai Yue, Lin Dong, Mei-Jun Liu, Guan-Jun Yang

{"title":"Suppression of CMAS penetration by synergistic modulation of reaction-phase barrier in multi-rare-earth co-doped zirconia","authors":"Yao-Xu Zan, Chang-Sheng Li, Peng-Shuai Yue, Lin Dong, Mei-Jun Liu, Guan-Jun Yang","doi":"10.1016/j.corsci.2025.113037","DOIUrl":"10.1016/j.corsci.2025.113037","url":null,"abstract":"<div><div>Molten calcium-magnesium-alumino-silicates (CMAS) corrosion poses a critical challenge to the corrosion resistance of thermal barrier coatings (TBCs) in advanced turbine engines. In this work, a novel material design strategy is developed to enhance CMAS corrosion resistance by controlling the reaction-precipitated phase composition and structure through multi-component rare earth (Y/Gd/Yb) optimization. Through cationic synergy optimization, a defect-fluorite ceramic Zr<sub>3/7</sub>Y<sub>8/21</sub>Yb<sub>2/21</sub>Gd<sub>2/21</sub>O<sub>12/7</sub> (YYbGdZO) was synthesized, demonstrating fundamentally distinct CMAS penetration resistance compared to conventional gadolinium zirconate (GZO). It was found that the CMAS penetration depth of YYbGdZO was reduced by 98 % compared to GZO after 100 h of exposure at 1400 °C. This improvement is attributed to the synergy of multi-rare earth elements in YYbGdZO, which selectively reacts with components in molten CMAS, forming a protective (Y,Yb,Gd)<sub>2</sub>Si<sub>2</sub>O<sub>7</sub>-apatite/rare-earth-stabilized zirconia composite barrier that significantly enhances the material's resistance to CMAS and long-term stability. This study provides a novel strategy for the optimization of materials resistant to molten sand erosion under extreme high-temperature environments.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"254 ","pages":"Article 113037"},"PeriodicalIF":7.4,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144070339","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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: 0

Design of an EIS-based sensor for indirect non-invasive corrosion inspection 间接非侵入式腐蚀检测传感器的设计

IF 7.4 1区材料科学

Corrosion Science Pub Date : 2025-05-14 DOI: 10.1016/j.corsci.2025.113029

Zhixin Dong , Benoît Ter-Ovanessian , Hiroshi Abe , Nicolas Mary , Yutaka Watanabe , Bernard Normand

{"title":"Design of an EIS-based sensor for indirect non-invasive corrosion inspection","authors":"Zhixin Dong , Benoît Ter-Ovanessian , Hiroshi Abe , Nicolas Mary , Yutaka Watanabe , Bernard Normand","doi":"10.1016/j.corsci.2025.113029","DOIUrl":"10.1016/j.corsci.2025.113029","url":null,"abstract":"<div><div>Electrochemical Impedance Spectroscopy (EIS) is a powerful quantitative technique to study metal corrosion. However, conventional EIS measurements require immersing the sample in liquid electrolytes and direct electrical connection to the metal substrate, limiting its feasibility for non-destructive testing and field use. This study introduces a novel non-invasive EIS sensor with a compact dual-compartment structure and an agar-based solid electrolyte, enabling a good fit for different surfaces and rapid measurements without sample immersion or wired contact with the substrate. The sensor’s performance has been tested on bare and coated metals under laboratory conditions and compared quantitatively with conventional EIS. The reliability and repeatability of the obtained impedance spectra have been validated, and the effects of key sensor parameters and experimental settings (e.g., measurement distance, reference electrode, working electrode, and AC potential amplitude) on impedance response have been systematically investigated. In addition, appropriate experimental protocol and data processing methodology have been established. The results demonstrate that the proposed method provides high-quality, analyzable impedance spectra comparable to conventional EIS after removing the contribution of the sensor’s self-impedance. Impedance analysis of coated metals indicates that the current path traverses the coating interface and conducts through the metal substrate rather than solely through the coating. Furthermore, the sensor successfully determined the coating thickness consistent with the sample characteristics. This work advances indirect impedance measurements and offers a viable solution for rapid, non-invasive corrosion inspection and coating assessment.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"254 ","pages":"Article 113029"},"PeriodicalIF":7.4,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144115891","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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: 0

Corrosion behaviour of Alloy 600 containing oxide inclusions exposed to primary water of pressurised water reactors 含氧化物夹杂的合金600暴露在压水堆原水中的腐蚀行为

IF 7.4 1区材料科学

Corrosion Science Pub Date : 2025-05-14 DOI: 10.1016/j.corsci.2025.113035

Colette Perez , Thierry Couvant , Vincent Guipont , Guillaume Kermouche , David Balloy , Paul Royes , Cécilie Duhamel

{"title":"Corrosion behaviour of Alloy 600 containing oxide inclusions exposed to primary water of pressurised water reactors","authors":"Colette Perez , Thierry Couvant , Vincent Guipont , Guillaume Kermouche , David Balloy , Paul Royes , Cécilie Duhamel","doi":"10.1016/j.corsci.2025.113035","DOIUrl":"10.1016/j.corsci.2025.113035","url":null,"abstract":"<div><div>Intergranular stress corrosion cracking (IGSCC) was observed in an Alloy 600 bottom-mounted instrumentation (BMI) nozzle of a French pressurised water reactor (PWR). Destructive examinations of the component revealed the presence of oxide inclusions extending along the crack, which were identified as likely to promote IGSCC initiation. In this context, the corrosion behaviour of Alloy 600 laboratory heats containing aluminium and/or magnesium oxide inclusions was investigated in primary water at 325°C and 360°C for oxidation times ranging from 10 h to 7000 h. Complete dissolution and/or detachment of the oxide inclusions was observed after a few hundred hours of exposure to primary water, and the presence of magnesium borate was locally detected. Furthermore, blister-like features consisting of Ni<sub>2</sub>FeBO<sub>5</sub> filaments embedded in a double nickel chromite spinel layer were characterised on the surface of Alloy 600 in the vicinity of some alumina inclusions while, a micron-thick oxide layer was formed at the former interface with the pre-existing inclusions.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"254 ","pages":"Article 113035"},"PeriodicalIF":7.4,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144124423","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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: 0