Corrosion Science最新文献_第7页

A precipitation hardened austenitic stainless steel with excellent stress corrosion cracking resistance against high-temperature water 一种沉淀硬化奥氏体不锈钢，具有优异的抗高温水应力腐蚀开裂性能

IF 7.4 1区材料科学

Corrosion Science Pub Date : 2025-09-22 DOI: 10.1016/j.corsci.2025.113352

Yuhao Zhou , Huayan Hu , Cheng Peng , Jie Liu , Yihan Zhao , Xiaoqing Shang , Can Guo , Zhao Shen , Miao Song , Lefu Zhang , Kai Chen

{"title":"A precipitation hardened austenitic stainless steel with excellent stress corrosion cracking resistance against high-temperature water","authors":"Yuhao Zhou , Huayan Hu , Cheng Peng , Jie Liu , Yihan Zhao , Xiaoqing Shang , Can Guo , Zhao Shen , Miao Song , Lefu Zhang , Kai Chen","doi":"10.1016/j.corsci.2025.113352","DOIUrl":"10.1016/j.corsci.2025.113352","url":null,"abstract":"<div><div>High-strength steels are susceptible to stress corrosion cracking (SCC). We developed a precipitation-hardened austenitic stainless steel via laser powder bed fusion that unexpectedly resists SCC in high-temperature water. It features weak texture and equiaxed crystals around dendrites, resulting in near-isotropic SCC behavior. Solidification segregation during solidification forms TiAlNi<sub>2</sub> precipitates at cell boundaries. These nano-scale TiAlNi<sub>2</sub> precipitates undergo preferential corrosion, initiating intragranular cracks, but blunt SCC-tips cease at these precipitates. Ti, Al and Ni from TiAlNi<sub>2</sub> spontaneously diffuse along phase interfaces toward the SCC front, and nearby TiAlNi<sub>2</sub> reduce the strain concentration, both of which enhance the SCC re-passivation. Furthermore, the multilevel strain buffer forms ahead of the blunt SCC edge, creating compressive strain at SCC tips that hinders propagation. This study provides a new strategy to improve SCC resistance through precipitation at dislocation cell boundaries in additively manufactured alloys.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"257 ","pages":"Article 113352"},"PeriodicalIF":7.4,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145118246","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

Intestinal bacteria-accelerated corrosion of biodegradable Zn–Mg alloys: Composition-dependent degradation behavior 可生物降解锌镁合金的肠道细菌加速腐蚀：成分依赖性降解行为

IF 7.4 1区材料科学

Corrosion Science Pub Date : 2025-09-22 DOI: 10.1016/j.corsci.2025.113345

Zhong Li , Lue Wu , Qingxiang Yu , Zhangzhi Shi , Yuping Ren , Mingxing Zhang , Fuhui Wang , Luning Wang , Dake Xu

{"title":"Intestinal bacteria-accelerated corrosion of biodegradable Zn–Mg alloys: Composition-dependent degradation behavior","authors":"Zhong Li , Lue Wu , Qingxiang Yu , Zhangzhi Shi , Yuping Ren , Mingxing Zhang , Fuhui Wang , Luning Wang , Dake Xu","doi":"10.1016/j.corsci.2025.113345","DOIUrl":"10.1016/j.corsci.2025.113345","url":null,"abstract":"<div><div>Zinc-based alloys are promising biodegradable materials for gastrointestinal devices, yet their degradation behavior in the complex, microbe-rich intestinal environment remains poorly understood. In this study, the corrosion behavior and underlying mechanisms of pure extruded Zn, Zn–0.03Mg, and Zn–0.05Mg alloys were systematically investigated in the presence of two representative intestinal bacteria, <em>Lactobacillus acidophilus</em> and <em>Lactobacillus plantarum</em>. Microstructural analysis revealed that trace Mg addition significantly refined the grain size of Zn alloys. Mechanical testing demonstrated that the yield strength of Zn–Mg alloys increased by approximately 3-fold compared to pure Zn, with nearly double the elongation after fracture. Electrochemical measurements, hydrogen release tests, weight loss analysis, and surface characterization showed that microbial activity accelerated the corrosion rate by 3–5 times. Notably, Mg incorporation effectively suppressed corrosion under both sterile and microbial conditions. Mechanistic analysis revealed that the acidic environment generated by bacterial metabolism was the primary driver of enhanced degradation. This work establishes a “structure–property–corrosion” relationship, offering a theoretical foundation for the mechanical optimization and degradation control of zinc-based biodegradable implants for gastrointestinal applications.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"257 ","pages":"Article 113345"},"PeriodicalIF":7.4,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145154263","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

Valence-dependent TiO2 inhibition for enhancing oxidation resistance in Ti2AlC via Zr/Nb solid solution 通过Zr/Nb固溶体增强Ti2AlC的抗氧化能力

IF 7.4 1区材料科学

Corrosion Science Pub Date : 2025-09-22 DOI: 10.1016/j.corsci.2025.113351

Yuxi Xu , Guanshui Ma , Zhongchang Li , Yan Zhang , Anfeng Zhang , Zhenyu Wang , Aiying Wang

{"title":"Valence-dependent TiO2 inhibition for enhancing oxidation resistance in Ti2AlC via Zr/Nb solid solution","authors":"Yuxi Xu , Guanshui Ma , Zhongchang Li , Yan Zhang , Anfeng Zhang , Zhenyu Wang , Aiying Wang","doi":"10.1016/j.corsci.2025.113351","DOIUrl":"10.1016/j.corsci.2025.113351","url":null,"abstract":"<div><div>Ti<sub>2</sub>AlC, as a typical MAX phase material, combines the excellent properties of both metals and ceramics for protective coatings used in harsh high-temperature conditions. However, concurrent existence of TiO<sub>2</sub> (rutile) and Al<sub>2</sub>O<sub>3</sub> easily causes the rapid growth of oxide scales and poor oxidation durability. In this study, we explored the pivotal concept of vacancy-dependent Zr/Nb solid solution to improve the oxidation resistance of Ti<sub>2</sub>AlC coating through the comprehensive atomic-scale calculations and microstructural characterizations. Results showed that the incorporated Zr and Nb concentration was about 5.3 and 5.2 at.% in high-purity Ti<sub>2</sub>AlC coating, respectively, presenting the homogeneous substitutions for M-site Ti atoms within the nanolayered structure. Comparing with the pristine Ti<sub>2</sub>AlC coating, both Zr and Nb solid solution distinctly inhibited the growth of TiO<sub>2</sub> and simultaneously promoted a continuous Al<sub>2</sub>O<sub>3</sub> layer, enhancing oxidation resistance during 650 °C exposure. The density functional theory calculations revealed that either solid solution of Zr or Nb in Ti<sub>2</sub>AlC significantly increased Ti vacancy formation energy, suppressing the generation of Ti vacancies that are essential for Ti diffusion. In addition, the higher valence state of Nb<sup>5</sup><sup>+</sup> , compared to Zr<sup>4+</sup> constituent was found to be more effectively inhibiting the growth of non-protective TiO<sub>2</sub> film. This study elucidates the vacancy-dependent oxidation resistance of MAX phase coatings with solid solutions used for high-temperature fields.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"257 ","pages":"Article 113351"},"PeriodicalIF":7.4,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145154245","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

Unveiling the effects of oxidation on the microstructure and microchemistry of the oxygen-rich layer in a near-α Ti alloy 揭示了氧化对近α钛合金富氧层微观组织和微观化学的影响

IF 7.4 1区材料科学

Corrosion Science Pub Date : 2025-09-21 DOI: 10.1016/j.corsci.2025.113344

Yanhong Chang , Junyang He , Feilong Yang , Wenjun Lu , Yawen Zhao , Ruiwen Li , Bin Su , Anyi Yin

{"title":"Unveiling the effects of oxidation on the microstructure and microchemistry of the oxygen-rich layer in a near-α Ti alloy","authors":"Yanhong Chang , Junyang He , Feilong Yang , Wenjun Lu , Yawen Zhao , Ruiwen Li , Bin Su , Anyi Yin","doi":"10.1016/j.corsci.2025.113344","DOIUrl":"10.1016/j.corsci.2025.113344","url":null,"abstract":"<div><div>A combination of electro-probe microanalysis, transmission electron microscopy and atom probe tomography was employed to investigate the effects of high-temperature oxidation on the gradient of the microstructure and microchemistry of the oxygen-rich layer on a near-α Ti alloy, Ti6242s, with a bimodal microstructure. α<sub>2</sub> precipitation occurred within the oxygen-rich layer, more pronounced inside the primary α grains than within the secondary α laths. The degree of α<sub>2</sub> precipitation increases with increasing oxygen content, and the critical amount of oxygen triggering α<sub>2</sub> is ∼3 at. % in the primary α grains, and even higher within the secondary α laths. These values are far greater than the reported value, ∼0.6–0.75 at. %, for the bulk alloy. Heterogeneous Al segregation was observed within the secondary α laths while bcc-β phase persisted even at the very surface where the oxygen content was highest. These findings indicate that oxygen ingress accelerates precipitation of α<sub>2</sub> at elevated temperature, and faster O diffusion along the dislocations and boundaries stimulates heterogeneous Al segregation. The lower degree of ordering within the secondary α laths was probably owing to the lower Si content and Al supersaturation.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"257 ","pages":"Article 113344"},"PeriodicalIF":7.4,"publicationDate":"2025-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145118245","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 mechanisms of columnar/dense structure for Gd2Zr2O7 ceramics coatings with superior CMAS corrosion resistance 具有优异CMAS耐蚀性的Gd2Zr2O7陶瓷涂层柱状/致密结构的形成机理

IF 7.4 1区材料科学

Corrosion Science Pub Date : 2025-09-21 DOI: 10.1016/j.corsci.2025.113348

Bo Cheng , Guangbin Zheng , Dong Hou , Chengyun Ding , Qianqian Chu , Li Feng , Guosheng An , Xinjian Zhang , Lan Sun , Haoteng Sun , Wensheng Li

{"title":"Formation mechanisms of columnar/dense structure for Gd2Zr2O7 ceramics coatings with superior CMAS corrosion resistance","authors":"Bo Cheng , Guangbin Zheng , Dong Hou , Chengyun Ding , Qianqian Chu , Li Feng , Guosheng An , Xinjian Zhang , Lan Sun , Haoteng Sun , Wensheng Li","doi":"10.1016/j.corsci.2025.113348","DOIUrl":"10.1016/j.corsci.2025.113348","url":null,"abstract":"<div><div>Corrosion failure induced by calcium-magnesium-alumina-silicate (CMAS) deposits represents a predominant degradation mechanism in advanced thermal barrier coatings (TBCs) systems. In this study, a laser-based surface modification strategy was systematically investigated to reconfigure the microstructure of air plasma spray (APS) Gd₂Zr₂O₇ (GZO) coatings, with the aim of enhancing their resistance to CMAS corrosion. Numerical simulations revealed that laser power dictates microstructural transformations: a fully dense layer forms near the surface at 8 W; in contrast, at 12 W, honeycomb-like crystals are first nucleate at the bottom of the melt pool and grow upward, exhibiting a slight orientation bias in the laser scanning direction. Subsequently, a micro-columnar structure develops in the middle and upper regions of the melt pool. A parameter combination (laser power: 14 W, scan speed: 100 mm/s, line spacing: 0.02 mm, spot diameter: 0.5 mm) was selected to fabricate a hybrid surface texture, which consists of vertically aligned micro-columns (∼10 μm) atop a dense subsurface layer (∼15 μm). The resulting micro columnar and micro-nanocomposite structure conferred superior CMAS corrosion resistance, which is attributable to reduced CMAS wettability on the coating surface and limited CMAS infiltration into the coating interior. The synergistic effects of surface texturing and subsurface structural engineering provide new insights into the design of the corrosion-resistant TBCs via laser-induced phase-selective recrystallization.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"257 ","pages":"Article 113348"},"PeriodicalIF":7.4,"publicationDate":"2025-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145118249","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

New approaches to enhancing hydrogen permeation inhibition in pipeline steel through cationic surfactant-assisted adsorption of organic inhibitors and mechanistic understanding 通过阳离子表面活性剂辅助吸附有机抑制剂增强管道钢中氢渗透抑制的新方法及其机理的认识

IF 7.4 1区材料科学

Corrosion Science Pub Date : 2025-09-20 DOI: 10.1016/j.corsci.2025.113338

Zhi Wang , Shuohan Wang , Anthony Somers , Bob Varela , Mike Yongjun Tan

{"title":"New approaches to enhancing hydrogen permeation inhibition in pipeline steel through cationic surfactant-assisted adsorption of organic inhibitors and mechanistic understanding","authors":"Zhi Wang , Shuohan Wang , Anthony Somers , Bob Varela , Mike Yongjun Tan","doi":"10.1016/j.corsci.2025.113338","DOIUrl":"10.1016/j.corsci.2025.113338","url":null,"abstract":"<div><div>Hydrogen permeation inhibition using organic inhibitors is considered to be a promising approach to protecting pipeline steels from hydrogen embrittlement. However, the effectiveness of existing inhibitors remains insufficient for practical industrial applications. This study investigates the enhancement of hydrogen permeation inhibition in API X65 pipeline steel using new compounds synthesised through the combination of a cationic surfactant with environmentally friendly anionic organic inhibitors, specifically cetyltrimethylammonium (CTA<sup>+</sup>) with trans-4-hydroxycinnamate (4OHcinn<sup>-</sup>) and trans-4-ethoxycinnamate (4EtOcinn<sup>-</sup>). While the individual components, cetyltrimethylammonium bromide (CTAB) and sodium 4-hydroxycinnamate (Na-4OHcinn), exhibited low hydrogen permeation inhibition efficiency with values below 20 %, the synthesised compounds CTA-4OHcinn and CTA-4EtOcinn achieved significantly higher inhibition efficiencies of 65 % and 80 %, respectively. The inhibition efficiency enhancement mechanism was investigated using electrochemical and surface analytical techniques, including the advanced methods of local electrochemical impedance spectroscopy and atom probe tomography for probing inhibitor film coverage characteristics and nanometre scale three-dimensional element distribution. The addition of these inhibitors during hydrogen charging was found to result in the formation of compact surface inhibitor films, with the significantly improved hydrogen permeation inhibition efficiency attributed to micelle-assisted adsorption of anionic organic inhibitors. These results show the prospective of developing high efficiency hydrogen inhibition inhibitors by combining cationic surfactants with environmentally friendly anionic inhibitors to mitigate hydrogen ingress in steels.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"257 ","pages":"Article 113338"},"PeriodicalIF":7.4,"publicationDate":"2025-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145154248","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

On the corrosion of a nano-oxide dispersion strengthened CoCrNi medium entropy alloy prepared by laser powder bed fusion 激光粉末床熔合法制备纳米氧化物弥散强化CoCrNi介质熵合金的腐蚀研究

IF 7.4 1区材料科学

Corrosion Science Pub Date : 2025-09-20 DOI: 10.1016/j.corsci.2025.113341

Mingyang Li , Yao Qiu , Nick Birbilis , Adam Taylor , Ross K.W. Marceau , Cunshuai Zhang , Yu Yan , Jing Liu

引用次数: 0

Alloy 304HCu in advanced ultra-supercritical steam: Exploring the early oxidation mechanism, oxide scale structure and the effect of steam pressure 304HCu合金在先进超超临界蒸汽中的早期氧化机理、氧化垢结构及蒸汽压力的影响

IF 7.4 1区材料科学

Corrosion Science Pub Date : 2025-09-20 DOI: 10.1016/j.corsci.2025.113339

C. Sundaresan, Bhagwat Ghule , Dandapani Vijayshankar, V.S. Raja

{"title":"Alloy 304HCu in advanced ultra-supercritical steam: Exploring the early oxidation mechanism, oxide scale structure and the effect of steam pressure","authors":"C. Sundaresan, Bhagwat Ghule , Dandapani Vijayshankar, V.S. Raja","doi":"10.1016/j.corsci.2025.113339","DOIUrl":"10.1016/j.corsci.2025.113339","url":null,"abstract":"<div><div>Alloy 304HCu was exposed to a simulated advanced ultra-supercritical steam (AUSC) environment at 650 ℃, 31 MPa, for various time durations ranging up to a maximum of 600 h. The nature of early-stage oxidation and the evolution of oxide scales over time were studied in detail through complementary characterization techniques. Additionally, a 100-hour test at 650 ℃, 25 MPa, was carried out to validate the effect of steam pressure on oxidation. The alloy initially formed a thin Cr-rich oxide, which later broke down primarily due to Cr volatilization and gave rise to thick, dual-layered oxides comprising an outer magnetite and an internal oxidation zone (IOZ). The IOZ was made up of alternating regions of Fe-Cr solid solution spinel and metallic (Ni, Cu, Fe)-rich phase as a result of the low oxygen activity within the IOZ and the selective oxidation phenomenon. The unoxidized (Ni, Cu, Fe)-rich phase does not seem to offer any resistance to the growth of the internal oxide front. AUSC steam was found to cause severe oxidation compared to supercritical steam reported in the literature, and the role of steam pressure towards the same was experimentally validated. The results are important in light of the alloy’s proposed usage in the global AUSC program.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"257 ","pages":"Article 113339"},"PeriodicalIF":7.4,"publicationDate":"2025-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145154413","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

On the morphology and composition of κ-phases on localized corrosion in wire arc additive manufacturing nickel aluminum bronze 电弧增材制造镍铝青铜中κ相的形态和组成对局部腐蚀的影响

IF 7.4 1区材料科学

Corrosion Science Pub Date : 2025-09-20 DOI: 10.1016/j.corsci.2025.113343

Ayda Shahriari , Sajad Shakerin , Nick Birbilis , Mohsen Mohammadi

{"title":"On the morphology and composition of κ-phases on localized corrosion in wire arc additive manufacturing nickel aluminum bronze","authors":"Ayda Shahriari , Sajad Shakerin , Nick Birbilis , Mohsen Mohammadi","doi":"10.1016/j.corsci.2025.113343","DOIUrl":"10.1016/j.corsci.2025.113343","url":null,"abstract":"<div><div>This study explores the influence of κ-phase morphology and chemical composition upon localized corrosion in wire arc additively manufactured (WAAM) nickel aluminum bronze (NAB). In addition to electrochemical analyses, the study utilized focused ion beam (FIB) milling, scanning transmission electron microscopy (TEM), and x-ray microanalysis to examine microstructural features in WAAM-NAB samples after exposure to a chloride-containing environment. It was determined that κ-phases exhibited so-called ‘cathodic’ behavior relative to the α-phase; however, their nobility was affected not only by composition, but also by morphology. Notably, elongated κ-phases - despite being Ni-Al-rich - promoted localized corrosion, which is associated with their increased interfacial area. Work function and chemical potential analyses support that phase morphology can have a key role in localized corrosion. This work highlights the critical role of microstructure in governing corrosion mechanisms in WAAM-fabricated alloys and the key insights provided by characterization at the nanoscale.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"257 ","pages":"Article 113343"},"PeriodicalIF":7.4,"publicationDate":"2025-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145118247","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

Si and Y co-alloying for superior LBE corrosion resistance through tailored interphases 通过定制的界面相，Si和Y共合金化具有优异的LBE耐腐蚀性

IF 7.4 1区材料科学

Corrosion Science Pub Date : 2025-09-20 DOI: 10.1016/j.corsci.2025.113337

Wenyao Li , Jin Zhou , Weichen Zhang , Hao Ren , Jun Zhang , Wei Fang , Xiaoxin Zhang , Qingzhi Yan , Tao Guo , Yang He , Lijie Qiao

{"title":"Si and Y co-alloying for superior LBE corrosion resistance through tailored interphases","authors":"Wenyao Li , Jin Zhou , Weichen Zhang , Hao Ren , Jun Zhang , Wei Fang , Xiaoxin Zhang , Qingzhi Yan , Tao Guo , Yang He , Lijie Qiao","doi":"10.1016/j.corsci.2025.113337","DOIUrl":"10.1016/j.corsci.2025.113337","url":null,"abstract":"<div><div>Liquid metal corrosion has long been a critical threat to the safe operation of lead-cooled fast neutron reactors (LFRs) since the 1950s. In preventing such a degradation mode in the ferrite-martensite (F-M) steel—a commonly-used structure material in reactor core, the alloying elements of Si or Y are reported to be useful presumably due to the rapid formation of a dense oxide scale on the steel surface. Herein, we demonstrate a synergy of Si and Y in alleviating corrosion of the F-M steels in the liquid lead-bismuth eutectic at 600 °C. Atomic-scale characterizations indicate that, while Si introduces primarily SiO<sub>2</sub> pockets within the spinel layer, Y further prompts the SiO<sub>2</sub> and Cr<sub>2</sub>O<sub>3</sub> formation at the interface of the oxide scale and the steel substrate, leading to unique interphase structure featuring amorphous SiO<sub>2</sub> and nanocrystalline Cr<sub>2</sub>O<sub>3</sub> composite. In contrast to the scenario of the baseline steel, this dual-phase layer can significantly reduce the mass transfer and ameliorate the damage tolerance of the oxide||matrix interface. The attendant corrosion rate drop reaches up to ∼67 %. The findings demonstrate the synergistic effects of Si and Y in alleviating corrosion of F-M steels in simulated working conditions of advanced LFR, shedding lights on tackling corrosion through tailored interphases.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"257 ","pages":"Article 113337"},"PeriodicalIF":7.4,"publicationDate":"2025-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145108988","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