Corrosion Science最新文献

{"title":"Oxygen-diffusion shielding: A novel mechanism governing the thermo-mechanical-oxidative behavior of C/SiC composites via In-situ CT","authors":"Yongsheng Gu ,&nbsp;Kangjia Liu ,&nbsp;Wenke Lu ,&nbsp;Zhijie Wang ,&nbsp;Xiaolong Li ,&nbsp;Yanfei Chen ,&nbsp;Daining Fang","doi":"10.1016/j.corsci.2026.113665","DOIUrl":"10.1016/j.corsci.2026.113665","url":null,"abstract":"<div><div>While numerous studies have examined C/SiC composites under ultra-high temperatures in air, inert, or vacuum atmospheres, the actual service environment of hypersonic vehicles features ultra-high temperatures and low pressure. To address this gap, we analyzed the residual mechanical properties, surface morphology, and pore-structure evolution of C/SiC composites after exposure to different temperatures, pressures, and loads. Mechanical testing, SEM, and in-situ CT were jointly employed. The results show that, when the temperature increases from 1200 °C to 1400 °C, the average residual strength and modulus exhibit increases of approximately 4 % and 18 %, respectively. Increasing pressure from 5 kPa to 15 kPa and 25 kPa leads to progressive reductions in residual strength by about 8 % and 30 %, while the residual modulus increases modestly by approximately 3 % and 12 %, indicating distinct controlling mechanisms. Notably, at 1200 °C and 5 kPa, an oxygen-diffusion shielding effect was observed: low loads enhance residual strength and modulus by closing pores and suppressing oxygen diffusion, whereas high loads reopen pores and accelerate crack-tip oxidation. In-situ CT analysis further reveals that porosity and fractal dimension decrease at low stress levels before increasing again with increasing stress. Based on these observations, an oxygen-diffusion shielding model that incorporates pore closure and fractal characteristics and a coupled thermo-mechanical-oxidation predictive expression was developed. It accurately captures the three-dimensional dependence of degradation on temperature, pressure, and load, and successfully predicts experimental results at 1400 °C under different loading conditions.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"262 ","pages":"Article 113665"},"PeriodicalIF":7.4,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146075757","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}

{"title":"Corrosion behavior of AA2024 aluminum alloy manufactured by solid state additive manufacturing – Additive friction stir deposition","authors":"Ziyu Li ,&nbsp;Dawei Guo ,&nbsp;Hongchang Qian ,&nbsp;Dawei Zhang ,&nbsp;Zhongyu Wu ,&nbsp;Qian Qiao ,&nbsp;Lap Mou Tam ,&nbsp;Chi Tat Kwok","doi":"10.1016/j.corsci.2026.113632","DOIUrl":"10.1016/j.corsci.2026.113632","url":null,"abstract":"<div><div>This study investigated the early-stage corrosion behavior of additive friction stir deposition (AFSD)-fabricated AA2024. The AFSD process reduced the grain size and the degree of particle clustering, fragmented the large constituent particles, and promoted the coarsening of the precipitate S-phase. Isolated and clustered particles presented distinct corrosion behavior. Isolated particles experienced localized attack at and around active particles, and a greater corrosion product coverage was found in AFSD made samples since the coarsening of precipitate S-phase provided extra active sites. Rings of corrosion products, typical features of stable pitting corrosion, were both observed on the feedstock and AFSD made alloys. However, stable pitting corrosion was less severe on AFSD fabricated specimen due to the weakening particle clustering.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"262 ","pages":"Article 113632"},"PeriodicalIF":7.4,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146006610","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}

{"title":"Dural roles of Ru on the corrosion resistance of Ti-0.5Ni-0.3Ta titanium alloy in the simulated environment for proton exchange membrane fuel cells: Passive film growth and micro-galvanic corrosion","authors":"Shu Zhu ,&nbsp;Guohao Liu ,&nbsp;Peng Zhou ,&nbsp;Bingxing Wang ,&nbsp;Bin Wang ,&nbsp;Yong Tian ,&nbsp;Huijun Liu","doi":"10.1016/j.corsci.2026.113669","DOIUrl":"10.1016/j.corsci.2026.113669","url":null,"abstract":"<div><div>The effect of Ru addition on regulating the microstructure and electrochemical stability of Ti-0.5Ni-0.3Ta alloy. Ru increases the α/β phase interfaces providing more nucleation sites for passive film. Furthermore, Ru reduces the diffusion flux of oxygen vacancies and replaces Ti atoms with Ru atoms to eliminate cation vacancies in the passive film. However, hydrolysis of Ru ions during passive film formation hinders heterogeneous nucleation. Additionally, Ru increases the potential difference between the α and β phases worsening the micro-galvanic corrosion. Ti-0.5Ni-0.3Ta-0.2Ru alloy has the best corrosion resistance, with a steady-state current density (0.15 μA/cm²) far below the DOE2025 standard (1 μA/cm²).</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"262 ","pages":"Article 113669"},"PeriodicalIF":7.4,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146075761","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}

{"title":"Reformation of protective oxide layers on artificially abraded surfaces of FeCrAl alloy during 4000 h exposure in flowing lead-bismuth eutectic","authors":"Masatoshi KONDO ,&nbsp;Yoshiki KITAMURA ,&nbsp;Atsushi KAWARAI ,&nbsp;Shigeru SAITO ,&nbsp;Hironari OBAYASHI","doi":"10.1016/j.corsci.2026.113646","DOIUrl":"10.1016/j.corsci.2026.113646","url":null,"abstract":"<div><div>The corrosion resistance of FeCrAl alloy APMT (Fe-21Cr-5Al-3Mo) in flowing lead-bismuth eutectic (LBE) was investigated by corrosion tests performed at 723 K using a non-isothermal forced convection loop. The oxygen concentration in flowing LBE was controlled at 1 × 10⁻⁶ wt%. No severe corrosion or erosion was detected on the specimens exposed to flowing LBE for 2000 h and 4000 h. Multiple oxide layers consisting of Fe-rich, Cr-rich and Al-rich sub-layers were formed in situ on the surface of APMT during the corrosion tests, which effectively suppressed corrosion and erosion. The oxide layers were intentionally removed by gentle abrasion prior to re-immersion and the specimens were then re-immersed in flowing LBE for an additional 2000 h. The oxide layers were spontaneously re-formed in situ on the abraded surface. This behavior indicates a self-healing capability. The results of micro-scratch tests indicated that the in-situ formed multiple oxide layers exhibited high adhesion strength in the shear direction after the 2000 h corrosion test. The α-Al₂O₃ layer pre-formed by oxidation in air at 1373 K remained adherent to the APMT specimen during exposure to flowing LBE for 2000 h. The adhesion strength of the α-Al₂O₃ layer in the shear direction was not degraded after the corrosion test.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"262 ","pages":"Article 113646"},"PeriodicalIF":7.4,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146075764","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}

{"title":"Inhibition of SRB-induced corrosion of X65 steel by Bacillus sp.: Microbial competition and biomineralized film formation","authors":"Jian Wang,&nbsp;Xueyan Shan,&nbsp;Min Du,&nbsp;Ting Xu,&nbsp;Zhiyu Tian,&nbsp;Chengjiao Jiao","doi":"10.1016/j.corsci.2026.113661","DOIUrl":"10.1016/j.corsci.2026.113661","url":null,"abstract":"<div><div>This study addressed the challenge of corrosion induced by sulfate-reducing bacteria (SRB) in oilfield produced water and proposed the use of the beneficial bacterium <em>Bacillus</em> sp. for corrosion control. The potential mechanisms through which <em>Bacillus</em> sp. inhibited SRB-induced corrosion were investigated, including competitive exclusion, production of microbial metabolites and biomineralization. The <em>Bacillus</em> sp. significantly inhibited SRB growth and reduced the production of corrosive sulfides. The microbial metabolites produced included numerous amino acid-based corrosion inhibitors and antimicrobial agents. Furthermore, the formation of biomineralized film effectively slowed down the corrosion process of SRB and possessed a certain self-repairing ability.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"262 ","pages":"Article 113661"},"PeriodicalIF":7.4,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146075759","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}

{"title":"Corrosion behavior in liquid lead of a novel FCC non-equiatomic high-entropy alloy capable of forming an alumina protective oxide scale","authors":"Roger Castellote-Alvarez ,&nbsp;David San-Martin ,&nbsp;Cesar Fernandez-Jimenez ,&nbsp;Jose A. Jimenez ,&nbsp;Christopher Petersson ,&nbsp;Esteban Urones-Garrote ,&nbsp;Peter Szakalos ,&nbsp;Isaac Toda-Caraballo","doi":"10.1016/j.corsci.2026.113651","DOIUrl":"10.1016/j.corsci.2026.113651","url":null,"abstract":"<div><div>This study presents the design, characterization and evaluation of corrosion resistance and mechanical integrity of a novel Co-free face-centered cubic (FCC) non-equiatomic Fe_33.5Ni_43.5Cr₁₁Mn₆Al₆ High-Entropy Alloy (HEA) for structural applications in Generation IV Lead-cooled Fast Reactors (LFRs). The alloy was engineered to form a protective Al-rich oxide scale. Liquid Metal Corrosion (LMC) tests were conducted in stagnant liquid Pb at 550 °C and 650 °C for 1150 h, under controlled oxygen concentrations ranging from 7.4·10⁻⁶ to 8.6·10⁻⁶ wt% at 550 °C, and from 4.5·10⁻⁵ to 3.6·10⁻⁴ wt% at 650 °C. Liquid Metal Embrittlement (LME) susceptibility was assessed via Slow Strain Rate Testing (SSRT) between 350 °C to 600 °C. LMC test results revealed bilayer oxide scale formation, with an inner amorphous alumina scale acting as an effective diffusion barrier and a complex outer Mn(Al,Fe,Cr)₂O₄ spinel prone to detachment. The alloy exhibited self-healing behavior, regenerating protective oxides in areas where Pb penetration took place. No signs of LME were observed up to 400 °C, with embrittlement onset occurring at 500 °C. Despite its high Ni content, which is typically detrimental in liquid Pb due to the its high solubility at elevated temperatures, leading to accelerated degradation, combined with low oxygen availability that hinders protective oxide formation and microstructural heterogeneities (oxide inclusions and local grain size variations), the alloy maintained excellent corrosion resistance and mechanical integrity. These results underscore the exceptional corrosion resistance of this non-equiatomic Fe_33.5Ni_43.5Cr₁₁Mn₆Al₆ HEA, positioning it as a highly promising candidate for high-temperature nuclear applications in Pb-cooled systems.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"262 ","pages":"Article 113651"},"PeriodicalIF":7.4,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146075766","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}

{"title":"Interfacial void formation and self-healing in oxide scales on Al-containing high-entropy alloy","authors":"Wenzhuo Gong ,&nbsp;Jiaqi Song ,&nbsp;Ya Cai ,&nbsp;Canying Cai ,&nbsp;Chenglong Lv ,&nbsp;Guangwen Zhou","doi":"10.1016/j.corsci.2026.113687","DOIUrl":"10.1016/j.corsci.2026.113687","url":null,"abstract":"<div><div>The exceptional high-temperature oxidation resistance of Al-containing high-entropy alloys (HEAs) is often attributed to the formation of a protective α-Al₂O₃ scale. However, the dynamic, atomic-scale mechanisms governing the stability of this scale—including interfacial void formation and the often-postulated but rarely visualized “self-healing” capacity—remain poorly understood. Herein, we reveal the complex evolution of the triple-layer oxide scale on an Al₁₀CoCrFeNi HEA through combined electron microscopy and diffraction study. We show that interfacial voids are an inherent consequence of the scaling process, originating from two distinct mechanisms: the Kirkendall effect at the interface between the γ-Al₂O₃/α-Al₂O₃ and alloy driven by cationic diffusion imbalance and volumetric contraction due to phase transformations at the Co-Cr-Fe-Ni spinel/Cr₂O₃ interface. Crucially, we provide microstructural evidence consistent with an intrinsic self-healing response. This process is driven by coupled inward diffusion of oxygen and outward diffusion of metal cations, leading to the in-situ formation of transient θ-Al₂O₃ and Co-Cr-Fe-Ni spinel that partially fill and seal the voids. These results provide atomic-scale insights into the phase evolution, defect formation, and self-repair of oxide scales in HEAs—highlighting pathways to enhance their oxidation resistance in extreme environments.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"262 ","pages":"Article 113687"},"PeriodicalIF":7.4,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146185275","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}

{"title":"Evolution of the early-stage corrosion behavior of 2 % Ni low-alloy steel in simulated marine atmosphere: Regulation by low chromium content","authors":"Bo Zhang,&nbsp;Jinhui Cui,&nbsp;Fulong Wang,&nbsp;Yipu Sun,&nbsp;Wei Liu","doi":"10.1016/j.corsci.2026.113685","DOIUrl":"10.1016/j.corsci.2026.113685","url":null,"abstract":"<div><div>The early-stage corrosion behavior of 2 wt% Ni (2Ni) low-alloy steel with low Cr additions in a simulated marine atmosphere was investigated. Results indicate that low-Cr content improves the overall corrosion resistance of 2Ni steel during the early-stage corrosion stage through a synergistic mechanism of \"microstructural regulation and rust layer optimization\". Specifically, low Cr content addition reduces the bainite start temperature, promoting bainite transformation and resulting in refined and homogenized granular bainite. This microstructural evolution helps alleviate residual stress accumulation in 2Ni steel and reduces its corrosion susceptibility. In the initial period before a protective rust layer forms, Cr can exist stably as the Cr₂O₃ oxide and promotes the transformation of γ-FeOOH to α-FeOOH. Moreover, Cr and Ni are found to co-enrich in the rust layer, where Cr further promotes the formation of more beneficial NiFe₂O₄. These changes collectively optimize the rust layer structure and phase composition, increase the charge transfer resistance at the rust/matrix interface, and enhance the early-stage corrosion resistance of 2Ni steel.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"262 ","pages":"Article 113685"},"PeriodicalIF":7.4,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146185276","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}

{"title":"Unraveling corrosion and tribocorrosion mechanisms of stainless steel in chloride/bromide media: The dual role of corrosion products","authors":"Yingpeng Zhang ,&nbsp;Zheng Wang ,&nbsp;Yalan Zhang ,&nbsp;Lei Li ,&nbsp;Peng Guo ,&nbsp;Aiying Wang","doi":"10.1016/j.corsci.2026.113643","DOIUrl":"10.1016/j.corsci.2026.113643","url":null,"abstract":"<div><div>Stainless steel components often face corrosion and tribocorrosion in various halide environments, as seen in applications like seawater plunger pumps, chemical agitators, and valves. Chloride (Cl^-) and bromide (Br^-) ions both degrade the corrosion and tribocorrosion resistance of stainless steel, yet their relative aggressiveness remains debated. Therefore, this study systematically compared the damage behavior of stainless steel in different halide environments using combined electrochemical and tribological techniques. Electrochemical corrosion analysis revealed Cl^- exhibited greater propensity than Br^- to displace oxygen within the Cr₂O₃ passive film and had a stronger penetration ability (smaller radius), rendering stainless steel more susceptible to pitting corrosion in Cl^- solutions. Resultant pits were larger, deeper, and more densely distributed. However, accumulated corrosion products such as Fe_xO_y inhibited Cl^- penetration, yielding a lower <em>I</em>_corr in Cl^- (3.58 ×10⁻⁹ A/cm²) versus Br^- solutions (8.87 ×10⁻⁹ A/cm²). Under tribocorrosion, copious Cl^--derived corrosion products acted as abrasive third bodies, exacerbating material loss versus Br^- environments, while wear-induced surface activation concurrently accelerated corrosion rates. This synergistic wear-corrosion interaction significantly elevated degradation, with corrosion-enhanced wear dominating material removal. Thus, while Cl^- more readily disrupted the Cr₂O₃ passive film, static corrosion products conferred protection via a “corrosion-product barrier” effect; under tribocorrosion, however, these protective oxides transformed into abrasive particles, amplifying degradation through mechano-electrochemical synergy.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"262 ","pages":"Article 113643"},"PeriodicalIF":7.4,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146006611","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}

{"title":"4D evolution of corrosion fatigue crack initiation and growth behavior in high-strength Al alloy by in situ synchrotron X-ray tomography","authors":"Ni Ao ,&nbsp;Songquan Tang ,&nbsp;Xu Zhang ,&nbsp;Yanan Fu ,&nbsp;Shengchuan Wu","doi":"10.1016/j.corsci.2026.113634","DOIUrl":"10.1016/j.corsci.2026.113634","url":null,"abstract":"<div><div>Visual observation of the entire life cycle during corrosion fatigue loading for Al alloys provides valuable insights into the underlying damage mechanisms. In this study, the full-field spatial-temporal evolution of corrosion fatigue, encompassing corrosion pit initiation, pit growth, pit-to-crack transition, crack growth and final fracture, is recorded by <em>in situ</em> synchrotron X-ray tomography. By integrating microstructural characterizations, this work offers a novel perspective on the corrosion fatigue damage mechanism of Al alloys. The geometrical morphology of corrosion pits strongly governs their subsequent evolution. Some corrosion pits own regular and uniform morphologies, while others, which ultimately become fatal pits, develop complex geometrical shapes due to interactions with constituent particles and voids in the material interior. The pit-to-crack transition is characterized by a repetitive process of crack tip growth followed by preferential dissolution of the sharp tip at the bottom of the pits. During the corrosion fatigue crack growth stage, a significant number of hydrogen bubbles are observed between crack surfaces, confirming the hybrid damage mechanism of hydrogen embrittlement (HE) and anodic dissolution (AD). The observed “growth-blunting-growth” behavior of the crack tip indicates that the corrosion fatigue crack growth rate is determined by a balance between the accelerating effects of HE and AD and the decelerating effect of AD-induced tip blunting.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"262 ","pages":"Article 113634"},"PeriodicalIF":7.4,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146075765","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}