Pub Date : 2025-01-10DOI: 10.1016/j.corsci.2025.112699
G.Y. Zhou , G.H. Cao , X.M. Dong , Z.H. Zhang
Rare earth (RE) doped casing steel subjected to a modified tempering treatment exhibited enhancement of strength and sulfide stress cracking (SSC) resistance. A double-cantilever beam method (in term of critical stress intensity factor: KISSC), was used to evaluate SSC susceptibility, where specimens were stressed and immersed in acidic solution containing H2S to simulate the real operating condition. Microstructural evolution and multiscale fractographic analyses were performed, the RE doped sample tempered at 710 °C achieved a higher yield strength of 794 MPa and a mean KISSC of 35.9 MPa∙m0.5, attributed to establishment of uniform tempered martensite structure with low dislocation density.
{"title":"Tailoring the mechanical property and sulfide stress corrosion cracking resistance of rare earth doped casing steel by tempering treatment","authors":"G.Y. Zhou , G.H. Cao , X.M. Dong , Z.H. Zhang","doi":"10.1016/j.corsci.2025.112699","DOIUrl":"10.1016/j.corsci.2025.112699","url":null,"abstract":"<div><div>Rare earth (RE) doped casing steel subjected to a modified tempering treatment exhibited enhancement of strength and sulfide stress cracking (SSC) resistance. A double-cantilever beam method (in term of critical stress intensity factor: K<sub>ISSC</sub>), was used to evaluate SSC susceptibility, where specimens were stressed and immersed in acidic solution containing H<sub>2</sub>S to simulate the real operating condition. Microstructural evolution and multiscale fractographic analyses were performed, the RE doped sample tempered at 710 °C achieved a higher yield strength of 794 MPa and a mean K<sub>ISSC</sub> of 35.9 MPa<strong>∙</strong>m<sup>0.5</sup>, attributed to establishment of uniform tempered martensite structure with low dislocation density.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"245 ","pages":"Article 112699"},"PeriodicalIF":7.4,"publicationDate":"2025-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143139203","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}
Pub Date : 2025-01-10DOI: 10.1016/j.corsci.2025.112700
Zihui Guo , Ming Liu , Yuan Ma , Hang Yu , Sirui Jing , Yu Yan
By studying several NiCoCr-based equiatomic medium-/high-entropy alloys (M/HEAs) with single face-centered cubic structures, in this work, we systematically investigated the key factors affecting the hydrogen embrittlement (HE) of these alloys, with particular emphasis on the deformation mechanism, hydrogen adsorption, hydrogen diffusion, and grain boundary chemistry. The FeNiCoCr HEA was significantly less susceptible to HE than the other alloys due to its lowest hydrogen concentration and the presence of Cr segregation. Mn alloying not only deteriorated the HE resistance but also greatly reduced the passivation film resistance in acidic media and chloride solutions.
{"title":"Hydrogen embrittlement and corrosion resistance of NiCoCr-based equimolar face-centered cubic medium-/high-entropy alloys","authors":"Zihui Guo , Ming Liu , Yuan Ma , Hang Yu , Sirui Jing , Yu Yan","doi":"10.1016/j.corsci.2025.112700","DOIUrl":"10.1016/j.corsci.2025.112700","url":null,"abstract":"<div><div>By studying several NiCoCr-based equiatomic medium-/high-entropy alloys (M/HEAs) with single face-centered cubic structures, in this work, we systematically investigated the key factors affecting the hydrogen embrittlement (HE) of these alloys, with particular emphasis on the deformation mechanism, hydrogen adsorption, hydrogen diffusion, and grain boundary chemistry. The FeNiCoCr HEA was significantly less susceptible to HE than the other alloys due to its lowest hydrogen concentration and the presence of Cr segregation. Mn alloying not only deteriorated the HE resistance but also greatly reduced the passivation film resistance in acidic media and chloride solutions.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"245 ","pages":"Article 112700"},"PeriodicalIF":7.4,"publicationDate":"2025-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143139859","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}
The influence of humic acid-mediated extracellular electron transfer (EET) of Shewanella putrefaciens CN32 in microbiologically influenced corrosion (MIC) on 304 stainless steel was investigated. Humic acid plays a key role in accelerating passive film degradation in the presence of S. putrefaciens CN32, with a concentration-dependent effect; but has no effect when alone. It facilitated the formation of larger biofilm and increased Fe and Cr dissolution, resulting in a thinner, weakened passive film and intensified pitting corrosion. In-situ scanning electrochemical microscopy demonstrated S. putrefaciens CN32 utilized humic acid to perform outward EET, injecting electrons into the passive film and accelerating MIC.
{"title":"Accelerated degradation of stainless-steel passive film by humic acid-mediated extracellular electron transfer","authors":"Yuntian Lou , Shengyu He , Weiwei Chang , Hao Zhang , Jingzhi Yang , Hongchang Qian , Xiangping Hao , Dawei Zhang","doi":"10.1016/j.corsci.2025.112696","DOIUrl":"10.1016/j.corsci.2025.112696","url":null,"abstract":"<div><div>The influence of humic acid-mediated extracellular electron transfer (EET) of <em>Shewanella putrefaciens</em> CN32 in microbiologically influenced corrosion (MIC) on 304 stainless steel was investigated. Humic acid plays a key role in accelerating passive film degradation in the presence of <em>S. putrefaciens</em> CN32, with a concentration-dependent effect; but has no effect when alone. It facilitated the formation of larger biofilm and increased Fe and Cr dissolution, resulting in a thinner, weakened passive film and intensified pitting corrosion. In-situ scanning electrochemical microscopy demonstrated <em>S. putrefaciens</em> CN32 utilized humic acid to perform outward EET, injecting electrons into the passive film and accelerating MIC.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"245 ","pages":"Article 112696"},"PeriodicalIF":7.4,"publicationDate":"2025-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143139719","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}
Pub Date : 2025-01-09DOI: 10.1016/j.corsci.2025.112697
Junliang Xue , Wei Guo , Mingsheng Xia , Caiwang Tan , Jiaxin Shi , Yongxin Zhang , Zhandong Wan , Yulong Li , Hongqiang Zhang
This study employed the laser in-situ post-weld heat treatment process to achieve in-situ precipitation of carbides (IPC) in the hydrogen embrittlement (HE) sensitive zone of QP980 steels laser welded joints. In the original joint with hydrogen pre-charging, cleavage fracture occurred at the inter-critical heat affected zone (ICHAZ). The IPC process only caused carbides to precipitate in martensite of the ICHAZ. The IPC joint with hydrogen pre-charging (5 min) exhibited ductile fracture at the base material during the slow strain rate tensile test, and the total elongation HE sensitivity of the joint was reduced from 84.6 % to 13.7 %.
{"title":"In-situ precipitation of carbides significantly enhances the hydrogen embrittlement resistance of advanced high-strength steels welded joints","authors":"Junliang Xue , Wei Guo , Mingsheng Xia , Caiwang Tan , Jiaxin Shi , Yongxin Zhang , Zhandong Wan , Yulong Li , Hongqiang Zhang","doi":"10.1016/j.corsci.2025.112697","DOIUrl":"10.1016/j.corsci.2025.112697","url":null,"abstract":"<div><div>This study employed the laser <em>in-situ</em> post-weld heat treatment process to achieve <em>in-situ</em> precipitation of carbides (IPC) in the hydrogen embrittlement (HE) sensitive zone of QP980 steels laser welded joints. In the original joint with hydrogen pre-charging, cleavage fracture occurred at the inter-critical heat affected zone (ICHAZ). The IPC process only caused carbides to precipitate in martensite of the ICHAZ. The IPC joint with hydrogen pre-charging (5 min) exhibited ductile fracture at the base material during the slow strain rate tensile test, and the total elongation HE sensitivity of the joint was reduced from 84.6 % to 13.7 %.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"245 ","pages":"Article 112697"},"PeriodicalIF":7.4,"publicationDate":"2025-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143139722","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}
Pub Date : 2025-01-09DOI: 10.1016/j.corsci.2025.112690
Raphael F. Assumpção , Mariana Georges , Xiaolei Guo , Francisco W.C. Farias , Dagoberto B. Santos , Gerald S. Frankel , Dalila C. Sicupira
This study investigates the influence of the reverse martensitic transformation on the corrosion behavior of 2304 lean duplex stainless steel (LDSS) at low temperatures (400–600°C). The steel underwent cold rolling, followed by isochronal annealing for 0.5 h. Phase transformations and microstructures were analyzed using X-ray diffraction, scanning electron microscopy, and transmission electron microscopy. Corrosion resistance was evaluated using a syringe cell with cyclic potentiodynamic polarization in 0.6 M NaCl solution and double-loop electrochemical potentiokinetic reactivation in 0.5 M H2SO4 + 0.001 M KSCN solution. A bimodal breakdown potential behavior, associated with either pitting or transpassivity, was observed in the as-received (AR) and samples annealed at 400°C. Pitting in the AR sample was associated with Al–Mg–Si–Ca–O inclusions, while pitting on the samples annealed at 400°C was linked to local reduced passive film resistance. Severe cold rolling enhanced the pitting resistance of 2304 LDSS. Selective electrochemical etching revealed preferential corrosion at phase interfaces and within the austenite phase. Additionally, annealing at 500°C to 600°C led to a marked decrease in pitting resistance and increased sensitization. Electron backscatter diffraction analysis of the corroded pits in the annealed specimens indicated that pits tend to nucleate and grow in α′-martensite/austenite regions. The nanostructure formed during low-temperature reversion, characterized by dislocation-cell martensite with high dislocation density and stacking faults, may adversely affect corrosion resistance due to heterogeneities associated with alloying element redistribution.
{"title":"Reverse martensitic transformation on the corrosion behavior of a 2304 lean duplex stainless steel","authors":"Raphael F. Assumpção , Mariana Georges , Xiaolei Guo , Francisco W.C. Farias , Dagoberto B. Santos , Gerald S. Frankel , Dalila C. Sicupira","doi":"10.1016/j.corsci.2025.112690","DOIUrl":"10.1016/j.corsci.2025.112690","url":null,"abstract":"<div><div>This study investigates the influence of the reverse martensitic transformation on the corrosion behavior of 2304 lean duplex stainless steel (LDSS) at low temperatures (400–600°C). The steel underwent cold rolling, followed by isochronal annealing for 0.5 h. Phase transformations and microstructures were analyzed using X-ray diffraction, scanning electron microscopy, and transmission electron microscopy. Corrosion resistance was evaluated using a syringe cell with cyclic potentiodynamic polarization in 0.6 M NaCl solution and double-loop electrochemical potentiokinetic reactivation in 0.5 M H<sub>2</sub>SO<sub>4</sub> + 0.001 M KSCN solution. A bimodal breakdown potential behavior, associated with either pitting or transpassivity, was observed in the as-received (AR) and samples annealed at 400°C. Pitting in the AR sample was associated with Al–Mg–Si–Ca–O inclusions, while pitting on the samples annealed at 400°C was linked to local reduced passive film resistance. Severe cold rolling enhanced the pitting resistance of 2304 LDSS. Selective electrochemical etching revealed preferential corrosion at phase interfaces and within the austenite phase. Additionally, annealing at 500°C to 600°C led to a marked decrease in pitting resistance and increased sensitization. Electron backscatter diffraction analysis of the corroded pits in the annealed specimens indicated that pits tend to nucleate and grow in α′-martensite/austenite regions. The nanostructure formed during low-temperature reversion, characterized by dislocation-cell martensite with high dislocation density and stacking faults, may adversely affect corrosion resistance due to heterogeneities associated with alloying element redistribution.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"245 ","pages":"Article 112690"},"PeriodicalIF":7.4,"publicationDate":"2025-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143139725","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}
Pub Date : 2025-01-09DOI: 10.1016/j.corsci.2025.112692
Qiangsheng Dong , Cheng Wang , Yunsong Chen , Kun Qian , Xingxing Zhou , Xi Tan , Fujun Fan , Zhixin Ba , Chenglin Chu , Feng Xue , Jing Bai
A micro/nano-bilayer self-healing coating on Mg-2Zn alloy, designated as PEO-LDH-P, was composed of plasma electrolytic oxidation (PEO) layer as a physical barrier, Mg-Mn layered double hydroxide as a corrosion inhibitor container, and phosphate ion as a corrosion inhibitor. Nano-scale LDH was prepared on PEO-coated Mg alloy through reactions in MnCl2 and Mg(NO3)2 solutions, successively. The phosphate ions were not only loaded into LDH interlamination but also formed as micro-sheet MgHPO4 after soaking in Na2HPO4 solution. During Mg corrosion, phosphate ions were released from both LDH intercalation by anion exchange and MgHPO4 due to pH increase, endowing PEO-LDH-P coating with self-healing function.
{"title":"Micro/nano-bilayer phosphate-loaded and dual stimuli-responsive self-healing coating on Mg alloy","authors":"Qiangsheng Dong , Cheng Wang , Yunsong Chen , Kun Qian , Xingxing Zhou , Xi Tan , Fujun Fan , Zhixin Ba , Chenglin Chu , Feng Xue , Jing Bai","doi":"10.1016/j.corsci.2025.112692","DOIUrl":"10.1016/j.corsci.2025.112692","url":null,"abstract":"<div><div>A micro/nano-bilayer self-healing coating on Mg-2Zn alloy, designated as PEO-LDH-P, was composed of plasma electrolytic oxidation (PEO) layer as a physical barrier, Mg-Mn layered double hydroxide as a corrosion inhibitor container, and phosphate ion as a corrosion inhibitor. Nano-scale LDH was prepared on PEO-coated Mg alloy through reactions in MnCl<sub>2</sub> and Mg(NO<sub>3</sub>)<sub>2</sub> solutions, successively. The phosphate ions were not only loaded into LDH interlamination but also formed as micro-sheet MgHPO<sub>4</sub> after soaking in Na<sub>2</sub>HPO<sub>4</sub> solution. During Mg corrosion, phosphate ions were released from both LDH intercalation by anion exchange and MgHPO<sub>4</sub> due to pH increase, endowing PEO-LDH-P coating with self-healing function.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"245 ","pages":"Article 112692"},"PeriodicalIF":7.4,"publicationDate":"2025-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143139207","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}
Pub Date : 2025-01-09DOI: 10.1016/j.corsci.2024.112620
Daxin Li , Zhihua Yang , Dechang Jia , Xiaoming Duan , Shengjin Wang , Qishuai Zhu , Yang Miao , Jiancun Rao , Yu Zhou
{"title":"Corrigendum to “Effects of boron addition on the high temperature oxidation resistance of dense SiBCN monoliths at 1500°C” [Corrosion Science 126 (2017) 10–25]","authors":"Daxin Li , Zhihua Yang , Dechang Jia , Xiaoming Duan , Shengjin Wang , Qishuai Zhu , Yang Miao , Jiancun Rao , Yu Zhou","doi":"10.1016/j.corsci.2024.112620","DOIUrl":"10.1016/j.corsci.2024.112620","url":null,"abstract":"","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"245 ","pages":"Article 112620"},"PeriodicalIF":7.4,"publicationDate":"2025-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143139205","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}
Pub Date : 2025-01-09DOI: 10.1016/j.corsci.2025.112698
Chunyi Han , Zhanbo Sun , Qin Zhang , Fanghai Xin , Zhaoyue Liu , Mingtian Li , Yangtao Zhou
The corrosion resistance of stainless steels exposed to humid environment is closely related to the surface oxide film. To date, the formation process and its correlation with the alloy defects are still unclear. The present study, using in-situ atomic-scale TEM characterization, reveals the growth process of oxide film on a fresh steel surface. The oxide formation involves the oxygen adsorption, the inward diffusion into alloy lattice, and the outward expansion of stable oxide film. The metal-oxide solid transformation is found to be promoted by the lattice strain of the alloy. The atomic structures of the oxides are imaged and analyzed.
{"title":"Atomic scale in-situ TEM observation of the lattice strain enhanced-oxide film growth on stainless steel","authors":"Chunyi Han , Zhanbo Sun , Qin Zhang , Fanghai Xin , Zhaoyue Liu , Mingtian Li , Yangtao Zhou","doi":"10.1016/j.corsci.2025.112698","DOIUrl":"10.1016/j.corsci.2025.112698","url":null,"abstract":"<div><div>The corrosion resistance of stainless steels exposed to humid environment is closely related to the surface oxide film. To date, the formation process and its correlation with the alloy defects are still unclear. The present study, using in-situ atomic-scale TEM characterization, reveals the growth process of oxide film on a fresh steel surface. The oxide formation involves the oxygen adsorption, the inward diffusion into alloy lattice, and the outward expansion of stable oxide film. The metal-oxide solid transformation is found to be promoted by the lattice strain of the alloy. The atomic structures of the oxides are imaged and analyzed.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"245 ","pages":"Article 112698"},"PeriodicalIF":7.4,"publicationDate":"2025-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143139860","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}
Pub Date : 2025-01-07DOI: 10.1016/j.corsci.2025.112675
Jingzhi Yang , Junsen Zhao , Xin Guo , Yami Ran , Zhongheng Fu , Hongchang Qian , Lingwei Ma , Patrick Keil , Arjan Mol , Dawei Zhang
The discovery of synergistic strategies effectively improves the corrosion inhibition capability of amino acids. However, the wide variety of amino acid formulations and the time-consuming nature of corrosion tests make combinatorial discovery challenging to achieve. Herein, a library of 70 amino acids was created and tested in a high-throughput manner. Benefiting from a vast amount of labeled data of amino acid formulations, an interpretable machine learning approach was used to reveal the contribution of molecular features to inhibition performance of amino acids and the synergisms in the optimal formulation. The synergism was verified by electrochemical tests and quantum chemical calculations.
{"title":"Combinatorial discovery and investigation of the synergism of green amino acid corrosion inhibitors: Integrating high-throughput experiments and interpretable machine learning approach","authors":"Jingzhi Yang , Junsen Zhao , Xin Guo , Yami Ran , Zhongheng Fu , Hongchang Qian , Lingwei Ma , Patrick Keil , Arjan Mol , Dawei Zhang","doi":"10.1016/j.corsci.2025.112675","DOIUrl":"10.1016/j.corsci.2025.112675","url":null,"abstract":"<div><div>The discovery of synergistic strategies effectively improves the corrosion inhibition capability of amino acids. However, the wide variety of amino acid formulations and the time-consuming nature of corrosion tests make combinatorial discovery challenging to achieve. Herein, a library of 70 amino acids was created and tested in a high-throughput manner. Benefiting from a vast amount of labeled data of amino acid formulations, an interpretable machine learning approach was used to reveal the contribution of molecular features to inhibition performance of amino acids and the synergisms in the optimal formulation. The synergism was verified by electrochemical tests and quantum chemical calculations.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"245 ","pages":"Article 112675"},"PeriodicalIF":7.4,"publicationDate":"2025-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143139861","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}
Pub Date : 2025-01-07DOI: 10.1016/j.corsci.2025.112676
Pengfei Du , Yikun Xie , Yujie Qiang , Xianghong Li , Shuduan Deng
Corrosion inhibition in severe acidic environments remains a significant challenge for industrial applications. Here, we introduce the Unified Interfacial Reaction Coefficient (), a novel parameter designed to capture the complex synergistic effects of Tobacco Stem Extract (TSE)/KI in H₂SO₄ media. offers a unified framework by integrating key electrochemical parameters such as charge transfer resistance and double-layer capacitance, providing a deeper understanding of the interfacial reactions. Quantum calculations provided additional insights into the molecular interactions at the steel interface. This study positions as a robust tool for advancing corrosion science and designing sustainable inhibitors for industrial applications.
{"title":"Tobacco stem extract/KI as a sustainable synergistic inhibitor for the corrosion of steel in H₂SO₄ media: Proposal and application of an advanced impedance parameter","authors":"Pengfei Du , Yikun Xie , Yujie Qiang , Xianghong Li , Shuduan Deng","doi":"10.1016/j.corsci.2025.112676","DOIUrl":"10.1016/j.corsci.2025.112676","url":null,"abstract":"<div><div>Corrosion inhibition in severe acidic environments remains a significant challenge for industrial applications. Here, we introduce the Unified Interfacial Reaction Coefficient (<span><math><msub><mrow><mi>U</mi></mrow><mrow><mi>IRC</mi></mrow></msub></math></span>), a novel parameter designed to capture the complex synergistic effects of Tobacco Stem Extract (TSE)/KI in H₂SO₄ media. <span><math><msub><mrow><mi>U</mi></mrow><mrow><mi>IRC</mi></mrow></msub></math></span> offers a unified framework by integrating key electrochemical parameters such as charge transfer resistance and double-layer capacitance, providing a deeper understanding of the interfacial reactions. Quantum calculations provided additional insights into the molecular interactions at the steel interface. This study positions <span><math><msub><mrow><mi>U</mi></mrow><mrow><mi>IRC</mi></mrow></msub></math></span> as a robust tool for advancing corrosion science and designing sustainable inhibitors for industrial applications.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"245 ","pages":"Article 112676"},"PeriodicalIF":7.4,"publicationDate":"2025-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143139862","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}
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