Corrosion Science最新文献

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Stability, failure and self-healing of Al2O3/Fe-Al coating in high-temperature oxygen-saturated lead-bismuth eutectic: Insights for protective coating optimization in nuclear reactors 高温氧饱和铅铋共晶中Al2O3/Fe-Al涂层的稳定性、失效和自愈:对核反应堆保护涂层优化的启示
IF 7.4 1区 材料科学
Corrosion Science Pub Date : 2025-07-13 DOI: 10.1016/j.corsci.2025.113182
Jianghui Zhu , Lilong Pang , Bo Zhang , Pengfei Tai , Liangpei Liu , Hailong Chang , Xing Gao , Tielong Shen , Zhiwei Ma , Sihao Huang , Zhiguang Wang
{"title":"Stability, failure and self-healing of Al2O3/Fe-Al coating in high-temperature oxygen-saturated lead-bismuth eutectic: Insights for protective coating optimization in nuclear reactors","authors":"Jianghui Zhu ,&nbsp;Lilong Pang ,&nbsp;Bo Zhang ,&nbsp;Pengfei Tai ,&nbsp;Liangpei Liu ,&nbsp;Hailong Chang ,&nbsp;Xing Gao ,&nbsp;Tielong Shen ,&nbsp;Zhiwei Ma ,&nbsp;Sihao Huang ,&nbsp;Zhiguang Wang","doi":"10.1016/j.corsci.2025.113182","DOIUrl":"10.1016/j.corsci.2025.113182","url":null,"abstract":"<div><div>This study investigates the microstructural evolution and corrosion behavior of Al<sub>2</sub>O<sub>3</sub>/Fe-Al coatings in oxygen-saturated lead-bismuth eutectic (LBE) environments at 550 °C and 650 °C over a duration of 2000 h. The experimental results indicate that Al in the Fe-Al layer continues to diffuse at both temperatures. The surface Al concentration remains high after long term test, maintaining the structural stability of the coating. Under the 550 °C condition, the outmost Al<sub>2</sub>O<sub>3</sub> layer remains intact without significant damage. However, at 650 °C, the original surface Al<sub>2</sub>O<sub>3</sub> layer undergoes delamination and failure, while a new Al<sub>2</sub>O<sub>3</sub> layer with large single-crystal is regenerated on the Fe-Al layer surface. The study reveals that at 650 °C, Pb and O penetrate along the Al<sub>2</sub>O<sub>3</sub> grain boundaries and form PbAl<sub>2</sub>O<sub>4</sub> oxide at the interface between the Fe-Al and Al<sub>2</sub>O<sub>3</sub> layers. This process plays a key role in the failure and regeneration of the Al<sub>2</sub>O<sub>3</sub> layer. These findings elucidate the failure and self-healing mechanisms of Al<sub>2</sub>O<sub>3</sub>/Fe-Al coatings in oxygen-saturated LBE environments, providing a preliminary assessment of the coating's potential application in LFR.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"256 ","pages":"Article 113182"},"PeriodicalIF":7.4,"publicationDate":"2025-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144655366","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
Influence of hydrogen and microstructure in gas phase environment on the slow strain rate tensiling properties of X65 pipeline steel welded joints 气相环境中氢气及组织对X65管线钢焊接接头慢应变速率拉伸性能的影响
IF 7.4 1区 材料科学
Corrosion Science Pub Date : 2025-07-13 DOI: 10.1016/j.corsci.2025.113179
Youfu Xiao , Chenyu Ma , Yun Cheng , Fuyang Wang , Xue Liu , Lianyong Xu , Yongdian Han
{"title":"Influence of hydrogen and microstructure in gas phase environment on the slow strain rate tensiling properties of X65 pipeline steel welded joints","authors":"Youfu Xiao ,&nbsp;Chenyu Ma ,&nbsp;Yun Cheng ,&nbsp;Fuyang Wang ,&nbsp;Xue Liu ,&nbsp;Lianyong Xu ,&nbsp;Yongdian Han","doi":"10.1016/j.corsci.2025.113179","DOIUrl":"10.1016/j.corsci.2025.113179","url":null,"abstract":"<div><div>This study investigates the tensile properties and hydrogen embrittlement susceptibility of X65 pipeline steel welded joints in hydrogen-blended natural gas environments by slow strain rate tensile (SSRT). The hydrogen embrittlement susceptibility index (<em>I</em><sub><em>PC1</em></sub>) of each area in the welded joint is calculated using principal component analysis, showing that the heat-affected zone (HAZ) has the highest susceptibility. The hydrogen embrittlement risk increased significantly when the hydrogen partial pressure exceeds 1.5 MPa. This phenomenon is owing to the high hydrogen embrittlement sensitivity of M-A constituents and the lowest activation energy of reversible hydrogen traps in the HAZ. The hydrogen-induced performance degradation mechanism is attributed to the dislocation pinning effect that hydrogen adsorption inhibits dislocation mobility, consequently diminishing the plastic deformation capacity of material.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"256 ","pages":"Article 113179"},"PeriodicalIF":7.4,"publicationDate":"2025-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144655363","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
Formation mechanism of Zr-based conversion coating on 6061-T6 Al and C1100 Cu galvanic couple 6061-T6 Al和C1100 Cu电偶zr基转换涂层的形成机理
IF 7.4 1区 材料科学
Corrosion Science Pub Date : 2025-07-13 DOI: 10.1016/j.corsci.2025.113188
Yi-Ting Wu , Siao-Ying Chen , Zong-Syun Yang , Han-Sheng Huang , I.-Chung Cheng , Chao-Sung Lin
{"title":"Formation mechanism of Zr-based conversion coating on 6061-T6 Al and C1100 Cu galvanic couple","authors":"Yi-Ting Wu ,&nbsp;Siao-Ying Chen ,&nbsp;Zong-Syun Yang ,&nbsp;Han-Sheng Huang ,&nbsp;I.-Chung Cheng ,&nbsp;Chao-Sung Lin","doi":"10.1016/j.corsci.2025.113188","DOIUrl":"10.1016/j.corsci.2025.113188","url":null,"abstract":"<div><div>Friction stir welding is a solid-state method for joining similar or dissimilar metals. Dissimilar weldments are susceptible to galvanic corrosion, signifying the need for surface treatment. The feasibility of forming a continuous ZrO<sub>2</sub> conversion coating on 6061-T6 Al/C1100 Cu dissimilar weldments in a ZrF<sub>6</sub><sup>2-</sup> solution was studied, focusing on the macro-galvanic coupling effect. C1100 Cu did not undergo a conversion coating reaction in the ZrF<sub>6</sub><sup>2-</sup> solution at pH 4. However, the conversion reaction proceeded when coupled to 6061-T6 Al. In contrast, the conversion coating reactions prevailed on 6061-T6 Al with and without coupling to C1100 Cu. The microstructure of the stir zone of 6061-T6 Al/C1100 Cu dissimilar weldments is highly heterogeneous. Micro-galvanic corrosion prevailed in the ZrF<sub>6</sub><sup>2-</sup> solution, and the resulting ZrO<sub>2</sub> conversion coating contained many cracks. In contrast, a sound conversion coating formed on the 6061-T6 Al/C1100 Cu dissimilar weldments because the macro-galvanic coupling between 6061-T6 Al and C1100 Cu base metals compensated the micro-galvanic effect in the stir zone. These results corroborate that a rise in pH is necessary to trigger the dissociation of ZrF<sub>6</sub><sup>2-</sup>. Thus, Zr conversion coating is feasible for Al and Cu dissimilar weldments.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"256 ","pages":"Article 113188"},"PeriodicalIF":7.4,"publicationDate":"2025-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144655369","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
Investigation on local dissolution and anti-corrosion characteristic of directed energy deposition (DED) CoCrMo-xCu alloys in marine environment 定向能沉积(DED) CoCrMo-xCu合金在海洋环境中的局部溶解及防腐特性研究
IF 7.4 1区 材料科学
Corrosion Science Pub Date : 2025-07-12 DOI: 10.1016/j.corsci.2025.113176
Yudong An , Qian Dong , Siliang Yu , Jibin Pu
{"title":"Investigation on local dissolution and anti-corrosion characteristic of directed energy deposition (DED) CoCrMo-xCu alloys in marine environment","authors":"Yudong An ,&nbsp;Qian Dong ,&nbsp;Siliang Yu ,&nbsp;Jibin Pu","doi":"10.1016/j.corsci.2025.113176","DOIUrl":"10.1016/j.corsci.2025.113176","url":null,"abstract":"<div><div>This study investigates the result of copper addition on the microstructure, local dissolution, and anti-corrosion characteristic of DED CoCrMo-xCu alloys. The regulation mechanism of copper content on alloy properties was revealed by using EIS, cyclic polarization, and the Mott-Schottky test, along with microstructure characterization techniques including SEM, EBSD, EPMA, SKPM, TEM, and XPS. The results reveal that the addition of Cu enhances grain refinement, promotes a denser passive film, and causes improved corrosion resistance of CoCrMo-2Cu. However, excessive Cu content can lead to microstructure segregation increases and the stability of passive film reduces, resulting in local dissolution and decreasing of corrosion resistance. This study provides valuable insights into optimizing Cu content for CoCrMo alloys to improve their performance in marine environments, offering potential applications in structural materials and anti-fouling surfaces.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"256 ","pages":"Article 113176"},"PeriodicalIF":7.4,"publicationDate":"2025-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144655370","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
Atomistic insights into chloride-induced depassivation mechanisms of protective Cu2O films in marine environments 海洋环境中保护Cu2O膜的氯诱导脱钝化机制的原子性见解
IF 7.4 1区 材料科学
Corrosion Science Pub Date : 2025-07-12 DOI: 10.1016/j.corsci.2025.113171
Ao Chen , Ying Wang , Jia-Bo Le , Kai Xu , Yongbo Kuang , Keke Chang
{"title":"Atomistic insights into chloride-induced depassivation mechanisms of protective Cu2O films in marine environments","authors":"Ao Chen ,&nbsp;Ying Wang ,&nbsp;Jia-Bo Le ,&nbsp;Kai Xu ,&nbsp;Yongbo Kuang ,&nbsp;Keke Chang","doi":"10.1016/j.corsci.2025.113171","DOIUrl":"10.1016/j.corsci.2025.113171","url":null,"abstract":"<div><div>Copper (Cu) is widely utilized in industrial and marine engineering due to its exceptional thermal and electrical conductivity. In alkaline environments, a passivation layer, primarily composed of Cu<sub>2</sub>O, forms on copper surfaces, effectively inhibiting corrosion. However, in marine environments, this protective film becomes vulnerable to attack by aggressive Cl<sup>-</sup> ions, leading to film detachment. Several mechanisms have been proposed to explain the depassivation of Cu<sub>2</sub>O, including stress-induced fracture, local thinning, and void-induced collapse mechanisms. Nevertheless, the precise atomic-scale processes at the Cu<sub>2</sub>O/seawater interface remain poorly understood, leaving the exact mechanism by which Cl<sup>-</sup> promotes Cu<sub>2</sub>O depassivation debated. To elucidate the atomic-scale mechanism of Cl<sup>-</sup>-induced Cu<sub>2</sub>O corrosion, this study employs advanced computational techniques: ab initio thermodynamics, machine learning potential-based molecular dynamics, and constrained molecular dynamics. Our results reveal that under marine conditions, Cl<sup>-</sup> undergoes extensive chemisorption on the Cu<sub>2</sub>O(111) surface. This adsorption markedly reduces the energy barrier for lattice copper dissolution. Furthermore, we demonstrate that the formation rate of surface Cu<sup>+</sup> vacancies far exceeds their longitudinal diffusion rate into the bulk. Based on this kinetic disparity, we propose that Cl<sup>-</sup>-mediated Cu<sub>2</sub>O depassivation primarily proceeds via the local thinning mechanism. Overall, this work clarifies the breakdown mechanism of passive films on copper and provides a critical theoretical basis for designing corrosion-resistant Cu-based alloys used in marine environments.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"256 ","pages":"Article 113171"},"PeriodicalIF":7.4,"publicationDate":"2025-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144632918","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
Accelerated and heterogeneous corrosion of Cr-doped uranium nitride fuel pellets 掺铬氮化铀燃料球团的加速和非均相腐蚀
IF 7.4 1区 材料科学
Corrosion Science Pub Date : 2025-07-11 DOI: 10.1016/j.corsci.2025.113175
Jennifer H. Stansby , Yulia Mishchenko , Sobhan Patnaik , Vanessa K. Peterson , Patrick A. Burr , Denise Adorno Lopes , Edward G. Obbard
{"title":"Accelerated and heterogeneous corrosion of Cr-doped uranium nitride fuel pellets","authors":"Jennifer H. Stansby ,&nbsp;Yulia Mishchenko ,&nbsp;Sobhan Patnaik ,&nbsp;Vanessa K. Peterson ,&nbsp;Patrick A. Burr ,&nbsp;Denise Adorno Lopes ,&nbsp;Edward G. Obbard","doi":"10.1016/j.corsci.2025.113175","DOIUrl":"10.1016/j.corsci.2025.113175","url":null,"abstract":"<div><div>The steam oxidation of Cr-doped UN fuel pellets is analysed during sequential isothermal holds up to 720 °C. <em>In situ</em> neutron diffraction results show how Cr is accommodated in a secondary U<sub>2</sub>CrN<sub>3</sub> phase, leading to the formation of a duplex UN/U<sub>2</sub>CrN<sub>3</sub> microstructure. Under corrosion, the oxidation of the two phases begins at 400 °C for UN and 430 °C for U<sub>2</sub>CrN<sub>3</sub>, respectively. Because the UN phase is preferentially oxidised in the presence of U<sub>2</sub>CrN<sub>3</sub>, addition of Cr in UN based nuclear fuel is found to accelerate the corrosion rate. At 430 °C the oxidation of UN in the UN/U<sub>2</sub>CrN<sub>3</sub> microstructure is ∼5 times faster than pure UN, increasing to ∼19 times faster at 460 °C. The oxidation of U<sub>2</sub>CrN<sub>3</sub> produces UO<sub>2</sub> via the formation of two transient intermediate phases. <em>In situ</em> neutron diffraction enables oxidation processes of UN and U<sub>2</sub>CrN<sub>3</sub> components to be followed separately within the two-phase system.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"256 ","pages":"Article 113175"},"PeriodicalIF":7.4,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144655365","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
Enhanced corrosion resistance of 2024 aluminum alloys with Cr2O3 thin layers by Atomic Layer Deposition 原子层沉积法提高Cr2O3薄层2024铝合金的耐蚀性
IF 7.4 1区 材料科学
Corrosion Science Pub Date : 2025-07-10 DOI: 10.1016/j.corsci.2025.113167
D. Mercier , R. Zazpe , X. Wang , M. Michaux , J. Rodriguez-Pereira , S. Zanna , A. Seyeux , J.M. Macak , P. Marcus
{"title":"Enhanced corrosion resistance of 2024 aluminum alloys with Cr2O3 thin layers by Atomic Layer Deposition","authors":"D. Mercier ,&nbsp;R. Zazpe ,&nbsp;X. Wang ,&nbsp;M. Michaux ,&nbsp;J. Rodriguez-Pereira ,&nbsp;S. Zanna ,&nbsp;A. Seyeux ,&nbsp;J.M. Macak ,&nbsp;P. Marcus","doi":"10.1016/j.corsci.2025.113167","DOIUrl":"10.1016/j.corsci.2025.113167","url":null,"abstract":"<div><div>This research explores the use of chromium oxide (Cr<sub>2</sub>O<sub>3</sub>) thin layers grown by Atomic Layer Deposition (ALD) as protective coating to enhance the corrosion resistance of 2024 aluminum alloys. In order to obtain sufficiently dense and uniform Cr<sub>2</sub>O<sub>3</sub> layers, the ALD process was tailored in terms of alloy surface pretreatment before the main Cr<sub>2</sub>O<sub>3</sub> ALD process. The corrosion resistance of both Cr<sub>2</sub>O<sub>3</sub> coated and non-coated aluminum alloys was evaluated in a corrosive 0.1 M KOH environment using <em>in situ</em> optical microscopy and <em>ex situ</em> surface analysis techniques, including X-ray Photoelectron Spectroscopy (XPS) and Time-of-Flight Secondary Ion Mass Spectrometry (ToF-SIMS) and a neutral environment containing chlorides. Findings revealed that the Cr<sub>2</sub>O<sub>3</sub>-coated samples exhibited significantly reduced reactivity, highlighting the excellent corrosion protection provided by the Cr<sub>2</sub>O<sub>3</sub> thin films. Although surface analysis revealed the presence of submicron defects within the Cr<sub>2</sub>O<sub>3</sub> layer, which could act as corrosion initiation sites, the occurrence of these defects was mitigated with increasing Cr<sub>2</sub>O<sub>3</sub> layer thickness. Additionally, after the corrosion test, an enrichment of copper and aluminum oxides at the layer surface was observed, suggesting preferential attack at intermetallic phases in corrosive environment.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"256 ","pages":"Article 113167"},"PeriodicalIF":7.4,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144613888","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
Effect of Heating Rates on Non-Isothermal and Isothermal Oxidation Behavior of Additive Friction Stir Deposited Nickel Base Superalloy IN625 升温速率对添加搅拌摩擦沉积镍基高温合金IN625非等温和等温氧化行为的影响
IF 7.4 1区 材料科学
Corrosion Science Pub Date : 2025-07-10 DOI: 10.1016/j.corsci.2025.113174
Shreyash M. Patil , KN Chaithanya Kumar , Madhavan Radhakrishnan , Shashank Sharma , Sameehan S. Joshi , Jitesh Kumar , Rajarshi Banerjee , Narendra B. Dahotre
{"title":"Effect of Heating Rates on Non-Isothermal and Isothermal Oxidation Behavior of Additive Friction Stir Deposited Nickel Base Superalloy IN625","authors":"Shreyash M. Patil ,&nbsp;KN Chaithanya Kumar ,&nbsp;Madhavan Radhakrishnan ,&nbsp;Shashank Sharma ,&nbsp;Sameehan S. Joshi ,&nbsp;Jitesh Kumar ,&nbsp;Rajarshi Banerjee ,&nbsp;Narendra B. Dahotre","doi":"10.1016/j.corsci.2025.113174","DOIUrl":"10.1016/j.corsci.2025.113174","url":null,"abstract":"<div><div>This study examined the effects of non-isothermal heating in air on formation of oxide layers on additive friction stir deposited (AFSD) IN625 as compared with the conventionally fabricated IN625 feed material. Oxidation kinetics and characteristics when heated to 1000 °C, at heating rates of 10, 100, and 1000 °C/min followed by isothermal holding at 1000 °C on the oxidation behavior and oxide species formation were evaluated in both feed and additive friction stir deposited IN625 alloy. The AFSD IN625 alloy experienced lower oxidation compared to the feed IN625 material under similar conditions due to the significantly smaller grains forming a uniform protective oxide layer during non-isothermal heating. Oxidation during isothermal heating followed a parabolic growth law in IN625 supporting Wagner’s oxidation theory. X-ray photoelectron spectroscopy and energy-dispersive X-ray spectroscopy studies revealed oxidation of almost all major alloying elements, with chromia being the predominant species. Interestingly, the formation of a continuous layer of NiO on top of chromia at 10 °C/min and 100 °C/min was observed in feed IN625, while in additive friction stir deposited discrete islands of NiO was formed. The material condition influenced the oxidation behavior while the evolution of oxides was influenced by the combined effects of heating rate and thermal kinetics. This experimental approach was designed to evaluate the material response to rapid, short-duration, and high-temperature oxidation, offering insights into the dynamic oxidation behavior of AFSD IN625 under varying thermal conditions.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"256 ","pages":"Article 113174"},"PeriodicalIF":7.4,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144596809","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 behavior and corrosion resistance mechanism of a multi-level heterogeneous lamellar structure eutectic high entropy alloy 多层非均相层状共晶高熵合金的腐蚀行为及耐蚀机理
IF 7.4 1区 材料科学
Corrosion Science Pub Date : 2025-07-10 DOI: 10.1016/j.corsci.2025.113172
Hao Wu , Jun Xie , Huaiyu Yang , Qi Li , Hongyu Chai , Fengjiang Zhang , Zhaokuang Chu , Jingjing Liang , Guichen Hou , Jinguo Li , Yizhou Zhou , Xiaofeng Sun
{"title":"Corrosion behavior and corrosion resistance mechanism of a multi-level heterogeneous lamellar structure eutectic high entropy alloy","authors":"Hao Wu ,&nbsp;Jun Xie ,&nbsp;Huaiyu Yang ,&nbsp;Qi Li ,&nbsp;Hongyu Chai ,&nbsp;Fengjiang Zhang ,&nbsp;Zhaokuang Chu ,&nbsp;Jingjing Liang ,&nbsp;Guichen Hou ,&nbsp;Jinguo Li ,&nbsp;Yizhou Zhou ,&nbsp;Xiaofeng Sun","doi":"10.1016/j.corsci.2025.113172","DOIUrl":"10.1016/j.corsci.2025.113172","url":null,"abstract":"<div><div>The heterostructure design has been extensively utilized in eutectic high entropy alloys (EHEAs) to further improve their comprehensive mechanical properties. Nevertheless, the impact of heterostructure construction on the corrosion resistance of EHEAs remains unclear. In this study, the corrosion behavior of a multi-level heterogeneous lamellar structure (MHLS) EHEA was studied, and the effect of heterostructure design on the corrosion mechanism of the alloy was clarified. The results showed that the MHLS EHEA exhibited significantly improved corrosion resistance in 3.5 wt% NaCl solution compared to the as-cast EHEA. The enhanced performance was attributed to a more compact, chemically stable passive film with higher concentrations of corrosion-resistant elements and higher content of corrosion resistant oxides. These attributes arise from the numerous structural defects and the precipitation of fine FeCr-rich FCC phases within the B2 lamellae. The findings of the current work will provide a theoretical basis for the development and design of EHEAs with excellent strength-ductility matching ability and superior corrosion resistance.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"256 ","pages":"Article 113172"},"PeriodicalIF":7.4,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144655364","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 behavior of extra-high-purity type 316 austenitic stainless steel in a liquid lead–bismuth eutectic with oxygen saturation or low oxygen concentrations 超高纯度316型奥氏体不锈钢在含氧饱和或低氧浓度铅铋共晶液中的腐蚀行为
IF 7.4 1区 材料科学
Corrosion Science Pub Date : 2025-07-10 DOI: 10.1016/j.corsci.2025.113173
Eriko Irisawa, Chiaki Kato
{"title":"Corrosion behavior of extra-high-purity type 316 austenitic stainless steel in a liquid lead–bismuth eutectic with oxygen saturation or low oxygen concentrations","authors":"Eriko Irisawa,&nbsp;Chiaki Kato","doi":"10.1016/j.corsci.2025.113173","DOIUrl":"10.1016/j.corsci.2025.113173","url":null,"abstract":"<div><div>This study investigates the corrosion behavior of extra-high-purity 316 austenitic stainless steel (316EHP), characterized by reduced impurity segregation at grain boundaries, in liquid lead-bismuth eutectic (LBE) at 530°C. The research assesses (1) the resistance of 316EHP to intergranular oxidation in oxygen-saturated LBE, and (2) its dissolution corrosion resistance at low oxygen concentrations below the equilibrium oxygen potential of magnetite. In oxygen-saturated LBE, 316EHP formed protective, uniform oxide layers without severe intragranular oxidation. Compared with conventional 316 L stainless steel, enhanced Cr diffusion along 316EHP grain boundaries significantly improved resistance to intergranular oxidation. However, in low-oxygen LBE, 316EHP showed higher susceptibility to dissolution corrosion, with rapid intergranular attack and the formation of island-like ferritic particles. The results of this study suggest that it is more effective to increase the resistance to intergranular corrosion by adding elements such as Si, which promote the formation of protective oxide scales, than to simply increase the Cr content in SS.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"256 ","pages":"Article 113173"},"PeriodicalIF":7.4,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144632920","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
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