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Micrographic account of antibacterial behaviors of copper-containing stainless steel 含铜不锈钢抗菌性能的显微照片
IF 7.4 1区 材料科学
Corrosion Science Pub Date : 2025-10-02 DOI: 10.1016/j.corsci.2025.113377
Zichen Hu , Guoteng Zhang , Xinxin Wei , Ke Tang , Bo Zhang , Dake Xu , Xiuliang Ma
{"title":"Micrographic account of antibacterial behaviors of copper-containing stainless steel","authors":"Zichen Hu ,&nbsp;Guoteng Zhang ,&nbsp;Xinxin Wei ,&nbsp;Ke Tang ,&nbsp;Bo Zhang ,&nbsp;Dake Xu ,&nbsp;Xiuliang Ma","doi":"10.1016/j.corsci.2025.113377","DOIUrl":"10.1016/j.corsci.2025.113377","url":null,"abstract":"<div><div>Copper-containing stainless steels are utilized in medical and food industries due to its superior antibacterial properties. Much attention has been paid either to the toxicity of copper ion or oxidative damage to cellular components through direct contact. Consequently ion-release and contact-killing are generally believed to be responsible for the primary antibacterial mechanisms. Nevertheless, the intrinsic correlation between copper ion release and contact-killing mechanisms, as well as the dynamic interaction processes governing bacterial responses to the alloyed copper element, remain unexplored. Here, utilizing aberration-corrected transmission electron microscopy and energy-dispersive X-ray spectroscopy analysis, we show that the presence of numerous copper particles surrounding planktonic cells with intact morphology. This provides compelling evidence for the observed suppression of cellular activity despite the significantly lower copper ion concentration compared to the established threshold. We propose that the inhibitory effect on planktonic bacteria may still involve contact-killing mechanism, and suggest sole reliance on contact-killing in copper-containing stainless steels might be insufficient for achieving effective killing efficacy. This work advances our understanding on the antibacterial mechanisms by introducing a dual-mechanism framework, moving beyond the conventional single-mechanism paradigm, and provides micrographic basis for enriching antibacterial theory through nanoscale interface engineering and bacterial response modulation.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"258 ","pages":"Article 113377"},"PeriodicalIF":7.4,"publicationDate":"2025-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145219452","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
Synergy in toughening: The comprehensive influence of nickel on microstructure and hydrogen embrittlement resistance of X65MH welds 增韧的协同作用:镍对X65MH焊缝组织及抗氢脆性能的综合影响
IF 7.4 1区 材料科学
Corrosion Science Pub Date : 2025-10-01 DOI: 10.1016/j.corsci.2025.113373
Zekun Yang , Zhanli Yang , Ziran Wang , Dakui Fei , Bing Lu , Hao Yuan , Yanyan Peng , Kai Xu
{"title":"Synergy in toughening: The comprehensive influence of nickel on microstructure and hydrogen embrittlement resistance of X65MH welds","authors":"Zekun Yang ,&nbsp;Zhanli Yang ,&nbsp;Ziran Wang ,&nbsp;Dakui Fei ,&nbsp;Bing Lu ,&nbsp;Hao Yuan ,&nbsp;Yanyan Peng ,&nbsp;Kai Xu","doi":"10.1016/j.corsci.2025.113373","DOIUrl":"10.1016/j.corsci.2025.113373","url":null,"abstract":"<div><div>Enhancing hydrogen embrittlement resistance is critical for pipelines constructed via high-heat-input Multi-wire submerged arc welding (Multi-wire SAW), a process known to induce microstructural degradation. This study demonstrates that a 1.48 wt% Ni addition to the welding wire effectively counteracts these detrimental effects in X65MH steel welds. The Ni-alloying strategy engineers a synergistic toughening microstructure characterized by a 12.21 % reduction in average grain size due to the promotion of fine acicular ferrite, and a 55.6 % increase in retained austenite, which serves as a beneficial hydrogen trap. Furthermore, Ni refines the grain boundary network, increasing the density of low-angle grain boundaries to create a more tortuous diffusion path for hydrogen. It also significantly reduces dislocation density (average Kernel Average Misorientation value decreased by 22.14 %) and induces a shift in martensite morphology within Martensitic-Austenitic(M-A) constituents from lath to twinned type. Crucially, transmission electron microscopy confirms that these enhancements stem from solid solution effects and modulated phase transformation kinetics, not precipitation strengthening. Consequently, the Ni-alloyed weld exhibits superior performance: the hydrogen embrittlement susceptibility index is reduced by 10.8 %, and the impact toughness loss rate after 48 h hydrogen charging decreases from 12.6 % to 10.1 %. Fractographic evidence reveals that this optimized microstructure suppresses hydrogen-induced cracking initiation and impedes crack propagation through extensive crack deflection and branching. This work provides a fundamental understanding of how a targeted Ni-alloying strategy can overcome the challenges of high-heat-input welding, offering a robust theoretical and experimental basis for designing next-generation, HE-resistant welding materials.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"258 ","pages":"Article 113373"},"PeriodicalIF":7.4,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145219453","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 Cr content on microstructural evolution, general corrosion and stress corrosion cracking of 42CrMo high-strength steel in simulated marine environment Cr含量对模拟海洋环境中42CrMo高强钢组织演变、一般腐蚀和应力腐蚀开裂的影响
IF 7.4 1区 材料科学
Corrosion Science Pub Date : 2025-09-30 DOI: 10.1016/j.corsci.2025.113367
Weipeng Ke, Wei Liao, Yichen Zhang, Chuangjie Fang, Xuesong Leng, Hongsheng Chen
{"title":"Effect of Cr content on microstructural evolution, general corrosion and stress corrosion cracking of 42CrMo high-strength steel in simulated marine environment","authors":"Weipeng Ke,&nbsp;Wei Liao,&nbsp;Yichen Zhang,&nbsp;Chuangjie Fang,&nbsp;Xuesong Leng,&nbsp;Hongsheng Chen","doi":"10.1016/j.corsci.2025.113367","DOIUrl":"10.1016/j.corsci.2025.113367","url":null,"abstract":"<div><div>The effect of Cr content on the microstructural evolution, general corrosion and stress corrosion cracking (SCC) behaviors of 42CrMo high-strength steel in simulated marine environment was investigated in this study. The results show that increasing the Cr content reduces the size of Cr-rich carbides while increasing their number density. Higher Cr content facilitates the progressive precipitation of intragranular M<sub>7</sub>C<sub>3</sub> and intergranular M<sub>23</sub>C<sub>6</sub> carbides. Although elevated Cr content can improve the mechanical properties and general corrosion resistance of 42CrMo high-strength steel, it simultaneously increases the SCC susceptibility in simulated marine environment. The enhanced corrosion resistance is primarily attributed to the formation of a continuous Cr-enriched passive film, coupled with corrosion products dominated by α-FeOOH. Together, they form a more compact and protective layer. However, the refined and densely distributed Cr-rich carbides act as reversible hydrogen traps with limited binding energy. This leads to localized hydrogen accumulation in the regions of stress concentration under tensile loading, which weakens the grain boundary cohesion and shifts the SCC fracture mode from ductile-dominated fracture at lower Cr content to hydrogen embrittlement-driven intergranular cracking at higher Cr content.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"258 ","pages":"Article 113367"},"PeriodicalIF":7.4,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145219451","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
Microstructural optimization enhances hydrogen embrittlement resistance in a 0.2C-6.8Mn medium manganese steel 组织优化提高了0.2C-6.8Mn中锰钢的抗氢脆性能
IF 7.4 1区 材料科学
Corrosion Science Pub Date : 2025-09-30 DOI: 10.1016/j.corsci.2025.113376
Zhongqian Cao , Juanping Xu , Weiguo Li , Jinxu Li
{"title":"Microstructural optimization enhances hydrogen embrittlement resistance in a 0.2C-6.8Mn medium manganese steel","authors":"Zhongqian Cao ,&nbsp;Juanping Xu ,&nbsp;Weiguo Li ,&nbsp;Jinxu Li","doi":"10.1016/j.corsci.2025.113376","DOIUrl":"10.1016/j.corsci.2025.113376","url":null,"abstract":"<div><div>This study investigates the effect of microstructural optimization on the hydrogen embrittlement (HE) resistance of a 0.2C-6.8Mn medium-Mn steel produced by hot rolling and intercritical annealing (HRA). Introducing cold rolling followed by secondary annealing (CR5A, CR20A) effectively tailored the microstructure, significantly reducing HE susceptibility without compromising strength or ductility. The HRA sample exhibited a typical lath shaped initial microstructure with an austenite fraction of 35.2 vol%. However, it showed a severe hydrogen-induced elongation loss of up to 76.1 % in slow strain rate tensile testing after hydrogen charging. This degradation is mainly attributed to the premature initiation and rapid propagation of hydrogen-induced intergranular cracks, promoted by sharp prior-austenite grain boundaries and low austenite stability. In contrast, the CR20A sample—subjected to 20 % cold rolling and short-time secondary annealing—showed a reduced austenite content (27.1 vol%). Nonetheless, weakened prior-austenite grain boundaries and markedly enhanced austenite stability promoted tortuous propagation and branching of hydrogen-induced cracks, thereby mitigating HE susceptibility. Furthermore, the higher initial dislocation density in CR20A suppressed hydrogen accumulation at phase boundaries, ultimately reducing its elongation loss to 43.9 %.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"258 ","pages":"Article 113376"},"PeriodicalIF":7.4,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145263763","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
Simulation of multiphase flow in wet natural gas offshore pipelines to assess top-of-the-line corrosion risks: A case study 海上湿天然气管道中多相流的模拟以评估管道顶部腐蚀风险:一个案例研究
IF 7.4 1区 材料科学
Corrosion Science Pub Date : 2025-09-30 DOI: 10.1016/j.corsci.2025.113371
Nader Kamali , Mehdi Javidi , Hossein Ali Pakravan , Peyman Keshavarz
{"title":"Simulation of multiphase flow in wet natural gas offshore pipelines to assess top-of-the-line corrosion risks: A case study","authors":"Nader Kamali ,&nbsp;Mehdi Javidi ,&nbsp;Hossein Ali Pakravan ,&nbsp;Peyman Keshavarz","doi":"10.1016/j.corsci.2025.113371","DOIUrl":"10.1016/j.corsci.2025.113371","url":null,"abstract":"<div><div>Offshore wet gas pipelines are susceptible to Top-of-the-Line Corrosion (TLC), particularly under sour service conditions. This study introduces a validated thermo-hydraulic simulation framework that incorporates In-Line Inspection (ILI) data to assess TLC risks and support monitoring-based mitigation strategies. Numerical modeling of three operational 32-inch pipelines demonstrates that temperature exerts a greater influence on sour TLC than water condensation. Pipelines A and B, with inlet temperatures of 60–70 °C, exhibited no corrosion near the inlets despite high condensation rates, which is attributed to the stability of protective FeS films. Severe TLC occurred downstream, with up to 20 % wall loss after 4.5 years, where wall temperatures decreased to 30–55 °C. Pipeline C, operating at a 56 °C inlet temperature, experienced immediate TLC, confirmed by ILI data, up to 12 % wall loss. The study identifies a critical threshold of 0.4 mg/L water content for corrosion initiation. The model facilitates monitoring by creating corrosion susceptibility maps, risk-based inspection schedules, and highlighting areas prone to TLC. Recommended mitigation methods include maintaining isolations, deploying vapor-phase inhibitors when isolations are not feasible, and prioritizing inspections in segments where conditions exceed critical thresholds. This integrated modeling and inspection approach provides a quantitative basis for predictive TLC management and improved pipeline integrity programs.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"258 ","pages":"Article 113371"},"PeriodicalIF":7.4,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145219456","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
Biodegradable LiZn4 intermetallic alloy for orthopedic applications 用于骨科的可生物降解的LiZn4金属间合金
IF 7.4 1区 材料科学
Corrosion Science Pub Date : 2025-09-30 DOI: 10.1016/j.corsci.2025.113370
Peng-Zhao Xia , Chao Zhou , Zhang-Zhi Shi , Jin-Ling Sun , Zi-Lin Li , Sheng-Lian Yao , Hai-Jun Zhang , Xin-Fu Gu , Lu-Ning Wang
{"title":"Biodegradable LiZn4 intermetallic alloy for orthopedic applications","authors":"Peng-Zhao Xia ,&nbsp;Chao Zhou ,&nbsp;Zhang-Zhi Shi ,&nbsp;Jin-Ling Sun ,&nbsp;Zi-Lin Li ,&nbsp;Sheng-Lian Yao ,&nbsp;Hai-Jun Zhang ,&nbsp;Xin-Fu Gu ,&nbsp;Lu-Ning Wang","doi":"10.1016/j.corsci.2025.113370","DOIUrl":"10.1016/j.corsci.2025.113370","url":null,"abstract":"<div><div>Intermetallic compounds (IMCs) exhibiting high strengths and appropriate degradation rates remain scarcely available. We develop a novel biodegradable LiZn<sub>4</sub>-IMC demonstrating a degradation rate of 0.21 mm/year and a high strength of 438 MPa, which exhibits potential for orthopedic applications. In 0.9 % NaCl solution, the degradation products comprise water-soluble Li<sup>+</sup> and Zn<sup>2+</sup> ions, as well as depositions of Zn(OH)<sub>2</sub>, ZnO, and Zn<sub>5</sub>(CO<sub>3</sub>)<sub>2</sub>(OH)<sub>6</sub>. With the extension of time, pitting corrosion due to dealloying of Li transitions to uniform corrosion. The synergistic action of Li<sup>+</sup>/Zn<sup>2+</sup> ions endows the IMC with favorable biocompatibility and excellent antibacterial properties.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"258 ","pages":"Article 113370"},"PeriodicalIF":7.4,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145264111","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
Unraveling the effect of annealing temperature on the pitting corrosion behavior of NbC-reinforced CoCrFeNi high entropy alloy 揭示了退火温度对nbc增强CoCrFeNi高熵合金点蚀行为的影响
IF 7.4 1区 材料科学
Corrosion Science Pub Date : 2025-09-30 DOI: 10.1016/j.corsci.2025.113375
Heng Chen , Yunhua Huang , Lin Lu , Xiaogang Li
{"title":"Unraveling the effect of annealing temperature on the pitting corrosion behavior of NbC-reinforced CoCrFeNi high entropy alloy","authors":"Heng Chen ,&nbsp;Yunhua Huang ,&nbsp;Lin Lu ,&nbsp;Xiaogang Li","doi":"10.1016/j.corsci.2025.113375","DOIUrl":"10.1016/j.corsci.2025.113375","url":null,"abstract":"<div><div>A systematic investigation of the influence of annealing temperature together with ∼0.3 at% Nb microalloying on the pitting corrosion behavior of NbC-reinforced CoCrFeNi high entropy alloys is presented in this work. Results indicate that Nb microalloying enhanced the pitting corrosion resistance by incorporating Nb oxides and more Cr<sub>2</sub>O<sub>3</sub> into the passive film. However, coarse complex carbides considerably precipitated at lower annealing temperature triggered galvanically induced pitting corrosion. By contrast, elevated temperature rendered the alloy superior corrosion resistance, attributed to the absence of coarse carbides and higher content of dissolved NbC which promoted the formation of less defective and thicker passive film.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"258 ","pages":"Article 113375"},"PeriodicalIF":7.4,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145219454","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
High surface quality electrochemical machining of powder metallurgy superalloys: A solvent-driven electrochemical approach across broad current densities 粉末冶金高温合金的高表面质量电化学加工:一种溶剂驱动的电化学方法,跨越宽电流密度
IF 7.4 1区 材料科学
Corrosion Science Pub Date : 2025-09-30 DOI: 10.1016/j.corsci.2025.113374
Jun Yin , Zhao Han , Xiao-long Fang
{"title":"High surface quality electrochemical machining of powder metallurgy superalloys: A solvent-driven electrochemical approach across broad current densities","authors":"Jun Yin ,&nbsp;Zhao Han ,&nbsp;Xiao-long Fang","doi":"10.1016/j.corsci.2025.113374","DOIUrl":"10.1016/j.corsci.2025.113374","url":null,"abstract":"<div><div>Electrolyte composition critically influences the electrochemical corrosion behavior of powder metallurgy superalloys, directly impacting machined surface quality. This study investigates ethylene glycol as a substitute for water, and reveals distinct differences in the electrochemical dissolution, in particular phase-specific dissolution behavior of René 104, when using aqueous versus ethylene glycol-based electrolytes. Polarization curves, open circuit potential, electrochemical impedance spectroscopy, and current efficiency tests are employed to elucidate passive film composition, valence state distribution, and formation mechanisms in different electrolytes. In addition, a point defect model is introduced to explain passivation film growth. Results show René 104 lacks a stable passivation region in aqueous solutions, leading to high ion mobility and defect formation rates. The primary <span><math><msubsup><mrow><mi>γ</mi></mrow><mrow><mi>p</mi></mrow><mrow><mo>′</mo></mrow></msubsup></math></span> phase, having a higher potential, preferentially dissolves, resulting in a porous, honeycomb-like surface. In contrast, ethylene glycol’s high viscosity and complexation ability reduce defect migration and dissolution rates, resulting in the formation of a denser, more stable passive film. This slower <span><math><msubsup><mrow><mi>γ</mi></mrow><mrow><mi>p</mi></mrow><mrow><mo>′</mo></mrow></msubsup></math></span> phase dissolution yields a smoother surface. Moreover, in the NaCl ethylene glycol solution, surface roughness after dissolution remains unaffected by current density. A dedicated experiment further confirms that NaCl in ethylene glycol facilitates high surface quality machining of René 104. Ethylene glycol-based electrolytes offer a practical route to achieve high-quality, precision machining of powder metallurgy superalloys, such as René 104, with improved surface stability and process robustness.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"258 ","pages":"Article 113374"},"PeriodicalIF":7.4,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145219449","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
Estimating standard adsorption Gibbs energy from corrosion inhibition efficiencies: A case of multilayer adsorption 从缓蚀效率估计标准吸附吉布斯能:多层吸附的一个例子
IF 7.4 1区 材料科学
Corrosion Science Pub Date : 2025-09-29 DOI: 10.1016/j.corsci.2025.113323
Anton Kokalj
{"title":"Estimating standard adsorption Gibbs energy from corrosion inhibition efficiencies: A case of multilayer adsorption","authors":"Anton Kokalj","doi":"10.1016/j.corsci.2025.113323","DOIUrl":"10.1016/j.corsci.2025.113323","url":null,"abstract":"<div><div>In corrosion inhibition studies, the standard adsorption Gibbs energy is often estimated from <span><math><mrow><mi>c</mi><mo>/</mo><mi>θ</mi></mrow></math></span> versus <span><math><mi>c</mi></math></span> plots, where <span><math><mi>c</mi></math></span> is the inhibitor concentration and <span><math><mi>θ</mi></math></span> is the surface coverage. In doing so, inhibition efficiency (<span><math><mi>η</mi></math></span>) is assumed to be a good approximation of surface coverage, i.e., <span><math><mrow><mi>θ</mi><mo>≈</mo><mi>η</mi></mrow></math></span>. Consequently, adsorption is effectively treated as monolayer adsorption, since inhibition efficiency is, by definition, confined to values below one. However, there is no fundamental physical reason why adsorption on flat surfaces should be limited to a monolayer. For this reason, a model that maps multilayer surface coverage to inhibition efficiency is developed based on a few reasonable physical assumptions. It is shown that multilayer adsorption reduces the slope of the <span><math><mrow><mi>c</mi><mo>/</mo><mi>η</mi></mrow></math></span> versus <span><math><mi>c</mi></math></span> curve — widely interpreted as the <span><math><mrow><mi>c</mi><mo>/</mo><mi>θ</mi></mrow></math></span> curve due to the <span><math><mrow><mi>θ</mi><mo>≈</mo><mi>η</mi></mrow></math></span> approximation — and leads to a more pronounced curvature compared to the monolayer case. While the bending at low concentrations resembles that caused by repulsive lateral interactions, the overall curvature remains a distinct feature of multilayer adsorption. However, it is argued that in experiments — where only a limited number of data points are typically obtained — these features are often not distinctive enough to allow multilayer identification. This helps explain why the <span><math><mrow><mi>θ</mi><mo>≈</mo><mi>η</mi></mrow></math></span> approximation, which implicitly assumes monolayer adsorption, has been so widely accepted and used.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"258 ","pages":"Article 113323"},"PeriodicalIF":7.4,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145264110","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 a lubricant-infused slippery surface under magnetic fields 注入润滑油的光滑表面在磁场作用下的腐蚀行为
IF 7.4 1区 材料科学
Corrosion Science Pub Date : 2025-09-29 DOI: 10.1016/j.corsci.2025.113366
Baojian Hu , Tengfei Xiang , Linjing Cui , Peng Qin , Xin Jin , Hairun Yu , Shihong Zhang
{"title":"Corrosion behavior of a lubricant-infused slippery surface under magnetic fields","authors":"Baojian Hu ,&nbsp;Tengfei Xiang ,&nbsp;Linjing Cui ,&nbsp;Peng Qin ,&nbsp;Xin Jin ,&nbsp;Hairun Yu ,&nbsp;Shihong Zhang","doi":"10.1016/j.corsci.2025.113366","DOIUrl":"10.1016/j.corsci.2025.113366","url":null,"abstract":"<div><div>The corrosion mechanisms of solid slippery surfaces (SSS) under externally applied magnetic field (MF) were investigated, with particular emphasis on elucidation of the synergistic interplay between magnetic gradient forces and Lorentz forces in influencing electrochemical degradation processes. Firstly, a multi-level micro/nanostructured superhydrophobic nickel coating (SNC) with excellent waterproof properties was successfully fabricated through electro-deposition and fluorosilane modification. Subsequently, SSS was prepared using a PDMS-paraffin composite lubricating layer. Electrochemical tests and surface characterization were undertaken under gradient MF (0 T, 0.1 T, 0.2 T), complemented by COMSOL Multiphysics coupling simulations. Experimental results reveal that increasing the MF strength can accelerate the corrosion rate: the corrosion current density rises from 1.218 × 10⁻⁷ mA/cm² (0 T) to 1.508 × 10⁻⁶ mA/cm² (0.2 T), while the impedance modulus decreases from 10<sup>4.75</sup> to 10<sup>4.4</sup>, indicating reduced charge-transfer resistance. The surface morphology evolves from sparse corrosion products at 0 T to dense clusters at 0.2 T, with a roughness increasing from 74.8 nm (peak) to 176.9 nm, accompanied by the formation of high-valence oxides. The mechanism involves Lorentz force-driven ion convection and magnetic gradient force-induced localized formation of corrosion cells, which collectively promote anodic dissolution and cathodic reactions. This work preliminarily investigates the interfacial corrosion behavior of slippery coatings under magnetic field exposure, providing theoretical references for optimizing long-term protective coatings in marine engineering equipment and magnetic devices.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"257 ","pages":"Article 113366"},"PeriodicalIF":7.4,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145216334","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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