Corrosion Communications最新文献

{"title":"On the corrosion and passivity of Inconel alloy 625 in HNO3 solution","authors":"Khashayar Morshed-Behbahani,&nbsp;Ali Nasiri","doi":"10.1016/j.corcom.2024.02.003","DOIUrl":"10.1016/j.corcom.2024.02.003","url":null,"abstract":"<div><div>Exploring the passivity and electrochemical behavior of Inconel alloy 625 in nitric acid solution could open up possibilities for potential applications, either in bulk form or as claddings. Hence, this research investigates corrosion behavior and passivity of Inconel alloy 625 in nitric acid solutions of varying concentrations (0.01–1.00 mol/L) using a range of analytical techniques, including potentiodynamic polarization testing, chronoamperometry measurement, Mott-Schottky (MS) analysis, X-ray diffraction (XRD) approaches, and point defect modeling (PDM). Results demonstrate that corrosion current density does not necessarily decrease with increasing electrolyte concentration (Please check it out). Additionally, the alloy exhibits higher passive film transpassive potentials in more concentrated solutions. Potentiostatic polarization tests reveal an increase in steady-state current densities attributed to the passive films formed in more concentrated solutions. Lower electrolyte concentrations lead to the formation of more intact bilayered passive films. In this context, the formation of passive films is elucidated by examining the generation and annihilation of point defects. The semiconducting behavior of passive layers is further examined through XRD patterns and electrochemical properties. According to PDM, the diffusivity of point defects within the passive films and their respective donor densities can be closely correlated.</div></div>","PeriodicalId":100337,"journal":{"name":"Corrosion Communications","volume":"17 ","pages":"Pages 28-34"},"PeriodicalIF":0.0,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143429953","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"On electrochemical corrosion of mechano-activated and thermally processed AlxCryNiz 2D decagonal quasicrystalline structures and crystalline approximants","authors":"Meysam Amini ,&nbsp;Seyed Ali Tayebifard ,&nbsp;Irandokht Jahanian Bahnemiri","doi":"10.1016/j.corcom.2024.06.001","DOIUrl":"10.1016/j.corcom.2024.06.001","url":null,"abstract":"&lt;div&gt;&lt;div&gt;This article represents a pioneering study centered on the corrosion kinetics of untreated and thermally processed mechano-synthesized Al&lt;em&gt;&lt;sub&gt;x&lt;/sub&gt;&lt;/em&gt;Cr&lt;em&gt;&lt;sub&gt;y&lt;/sub&gt;&lt;/em&gt;Ni&lt;em&gt;&lt;sub&gt;z&lt;/sub&gt;&lt;/em&gt; two-dimensional decagonal quasicrystalline structure and crystalline approximants. It sheds light on the distinguished corrosion behavior of untreated and heat-treated mechano-synthesized Al&lt;sub&gt;72&lt;/sub&gt;Cr&lt;sub&gt;15&lt;/sub&gt;Ni&lt;sub&gt;13&lt;/sub&gt; and Al&lt;sub&gt;86&lt;/sub&gt;Cr&lt;sub&gt;12&lt;/sub&gt;Ni&lt;sub&gt;2&lt;/sub&gt; alloys, including a wide diversity of miscellaneous intermetallic phases. A comprehensive characterization was performed to analyze crystallographic structure and thermal characteristics of Al&lt;em&gt;&lt;sub&gt;x&lt;/sub&gt;&lt;/em&gt;Cr&lt;em&gt;&lt;sub&gt;y&lt;/sub&gt;&lt;/em&gt;Ni&lt;em&gt;&lt;sub&gt;z&lt;/sub&gt;&lt;/em&gt; powder particles. Electrochemical evaluations of the mechano-synthesized Al&lt;sub&gt;72&lt;/sub&gt;Cr&lt;sub&gt;15&lt;/sub&gt;Ni&lt;sub&gt;13&lt;/sub&gt; and Al&lt;sub&gt;86&lt;/sub&gt;Cr&lt;sub&gt;12&lt;/sub&gt;Ni&lt;sub&gt;2&lt;/sub&gt; specimens and their heat-treated counterparts were conducted under cyclic potentiodynamic polarization tests with 0.1 mol/L Na&lt;sub&gt;2&lt;/sub&gt;SO&lt;sub&gt;4&lt;/sub&gt; (pH=2) and 3.5 % NaCl (pH=8.5) electrolytes at room temperature, respectively. Al&lt;sub&gt;72&lt;/sub&gt;Cr&lt;sub&gt;15&lt;/sub&gt;Ni&lt;sub&gt;13&lt;/sub&gt; two-dimensional decagonal quasicrystalline phase was attained following 6 h mechano-synthesis and subsequent annealing treatment at 1035 °C. There is no evidence of quasicrystal formation in the Al&lt;sub&gt;86&lt;/sub&gt;Cr&lt;sub&gt;12&lt;/sub&gt;Ni&lt;sub&gt;2&lt;/sub&gt; alloy system after 6 h mechano-synthesis and successive thermal processing at 445 and 570 °C. In this study, we conducted the first investigation into electrochemical performance of both Al&lt;sub&gt;72&lt;/sub&gt;Cr&lt;sub&gt;15&lt;/sub&gt;Ni&lt;sub&gt;13&lt;/sub&gt; and Al&lt;sub&gt;86&lt;/sub&gt;Cr&lt;sub&gt;12&lt;/sub&gt;Ni&lt;sub&gt;2&lt;/sub&gt; intermetallics. Both Al&lt;sub&gt;72&lt;/sub&gt;Cr&lt;sub&gt;15&lt;/sub&gt;Ni&lt;sub&gt;13&lt;/sub&gt; and Al&lt;sub&gt;86&lt;/sub&gt;Cr&lt;sub&gt;12&lt;/sub&gt;Ni&lt;sub&gt;2&lt;/sub&gt; alloys develop a protective passive film in 0.1 mol/L Na&lt;sub&gt;2&lt;/sub&gt;SO&lt;sub&gt;4&lt;/sub&gt; electrolyte. It was determined that 6 h mechano-synthesized Al&lt;sub&gt;72&lt;/sub&gt;Cr&lt;sub&gt;15&lt;/sub&gt;Ni&lt;sub&gt;13&lt;/sub&gt; sample, subjected to annealing at 1035 °C, stands out in the Al-Cr-Ni alloy systems for applications necessitating exceptional corrosion resistance, passivation behavior, and minimal susceptibility to pitting corrosion when compared to other tested counterparts. This alloy is characterized by a corrosion current density of 3.73 µA/cm&lt;sup&gt;2&lt;/sup&gt; and a corrosion potential of -0.16 V(vs. Ag/AgCl), revealing a remarkably stable passive film up to a current density of 0.02 A/cm&lt;sup&gt;2&lt;/sup&gt; and a potential of 2.41 V (vs. Ag/AgCl) within 0.1 mol/L Na&lt;sub&gt;2&lt;/sub&gt;SO&lt;sub&gt;4&lt;/sub&gt; medium. Likewise, it exhibited a drastically diminished corrosion current density of 11.65 µA/cm&lt;sup&gt;2&lt;/sup&gt; and a reduced corrosion potential of -0.27 V (vs. Ag/AgCl) within 3.5 % NaCl electrolyte, attributed to the formation of two-dimensional decagonal quasicrystalline phase and hexagonal &lt;em&gt;δ&lt;/em&gt;-Al&lt;sub&gt;3&lt;/sub&gt;Ni&lt;sub&gt;2&lt;/sub&gt; crystalline approximant at 1035 °C. It also encompassed a r","PeriodicalId":100337,"journal":{"name":"Corrosion Communications","volume":"17 ","pages":"Pages 44-56"},"PeriodicalIF":0.0,"publicationDate":"2024-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143453955","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence of friction stir processing (FSP) on arc directed energy deposited 316 L stainless steel: A corrosion science study","authors":"Khashayar Morshed-Behbahani ,&nbsp;Amir Hadadzadeh ,&nbsp;Adrian Gerlich ,&nbsp;Ali Nasiri","doi":"10.1016/j.corcom.2023.12.001","DOIUrl":"10.1016/j.corcom.2023.12.001","url":null,"abstract":"<div><div>Friction stir processing (FSP) was employed as a post-printing surface modification technique to enhance surface properties of arc-directed energy deposited 316 L austenitic stainless-steel parts. Corrosion properties and passivity of stir zone and base metal were investigated in 3.5 wt.% NaCl solution. Results reveal a gradual improvement in corrosion protection ability of formed passive film on the alloy's surface over time. Specifically, FSPed region exhibited superior passive behavior and uniform corrosion resistance compared to base metal. This improvement was attributed to a more homogeneous microstructure of stir zone, which hindered micro-galvanic coupling effect. However, it was observed that FSP-treatment did not effectively impede the propagation of pitting corrosion.</div></div>","PeriodicalId":100337,"journal":{"name":"Corrosion Communications","volume":"17 ","pages":"Pages 24-27"},"PeriodicalIF":0.0,"publicationDate":"2024-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143144211","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Grid-like micro/nano structured superhydrophobic surface of DH36 steel with efficient anti-icing performance through picosecond laser processing","authors":"Wei Wu ,&nbsp;Haixia Qi ,&nbsp;Xiaoqiu Chen ,&nbsp;Dongsheng Wang ,&nbsp;Zijing Wang ,&nbsp;Yanhua Lei ,&nbsp;Shibin Sun ,&nbsp;Xueting Chang","doi":"10.1016/j.corcom.2024.01.001","DOIUrl":"10.1016/j.corcom.2024.01.001","url":null,"abstract":"<div><div>Due to the high humidity and low temperature, icing problems of polar vessels are inevitable. Superhydrophobic surfaces possess excellent passive anti-icing properties owing to their outstanding water repellent ability. However, in literature, most methods for preparing anti-icing surfaces are complicated and environmentally unfriendly, making them unsuitable for surface protection of polar ships. In this paper, a simple laser etching method was used to prepare superhydrophobic anti-icing surface on DH36 steel, especially for polar ships. Contact angle of the prepared superhydrophobic surface was about 161°, and sliding angle was only 3° Meanwhile, icing time was 13.4 times longer than that of untreated steel surface. In addtion, such superhydrophobicity remains after 10 icing and de-icing cycles. Adequate surface roughness and adsorption of low surface energy substances in vacuum drying furnaces provide excellent hydrophobicity on this surface. No organic coating was used in this research, which could be applied to the anti-icing in polar environments with strict environmental protection requirements, providing a new idea for clean and green anti-icing technology for polar ships.</div></div>","PeriodicalId":100337,"journal":{"name":"Corrosion Communications","volume":"19 ","pages":"Pages 28-37"},"PeriodicalIF":0.0,"publicationDate":"2024-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143388218","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Accurate recognition of micromorphology images of epoxy coatings for deep-sea environments based on a deep learning super-resolution method","authors":"JiaQi Pan ,&nbsp;Furou Liu ,&nbsp;Jia Feng ,&nbsp;Fandi Meng ,&nbsp;Yufan Chen ,&nbsp;Jianning Chi ,&nbsp;Zelan Li ,&nbsp;Jie Li ,&nbsp;Li Liu","doi":"10.1016/j.corcom.2024.07.002","DOIUrl":"10.1016/j.corcom.2024.07.002","url":null,"abstract":"<div><div>Crack initiation and extension occur in organic coatings during service in deep-sea environments. However, when extracting detailed crack information from SEM images of epoxy mica coatings at different time periods in a simulated deep-sea fluid-hydraulic environment, uninteresting background regions are treated equally, resulting in unnecessary computational redundancy. To address the relatively blurred edges and unclear textures of SEM images, a crack image super-resolution network based on global mixed attention (GMA-net) is proposed for application to SEM images of organic coatings. The recognition results of the images processed with GMA-net were compared with those of the original images and the images processed with bicubic method, respectively. The results show that this method not only refrains from destroying the clarity of the original images but also greatly outperforms bicubic method in terms of precision, recall, mAP50 and mPA50–95, which are improved by approximately 23.1 %, 32.4 %, 36.4 % and 26.7 %, respectively. This method effectively highlights the details and improves the recognition accuracy of the edge texture with the aim of providing a good basis for subsequent recognition and even lifetime prediction studies.</div></div>","PeriodicalId":100337,"journal":{"name":"Corrosion Communications","volume":"19 ","pages":"Pages 14-27"},"PeriodicalIF":0.0,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143164914","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of irradiation and stress on crack initiation behavior of 316SS flux thimble tubes in PWR environment","authors":"Yichen Bao ,&nbsp;Xiaolei Yang ,&nbsp;Fanjiang Meng ,&nbsp;Yizhong Yang ,&nbsp;Qibao Chu ,&nbsp;Mi Wang ,&nbsp;Anders Jenssen","doi":"10.1016/j.corcom.2024.07.001","DOIUrl":"10.1016/j.corcom.2024.07.001","url":null,"abstract":"<div><p>Irradiation assisted stress corrosion cracking (IASCC) behavior and irradiated microstructural features of cold-worked 316 stainless steel flux thimble tube specimens were investigated in 340 °C simulated PWR primary water. It covers three dose levels (∼40, ∼60 and ∼100 dpa) and five stress levels (35%, 40%, 50%, 60% and 70% of irradiated yield strength at high temperature. Crack initiation in highly irradiated materials occurred rapidly in 33 failed specimens at high-stress level. A clear dose dependence for IASCC initiation was observed. The susceptibility to IASCC initiation reached saturation around 40–60 dpa. Fracture surface of different dose level O-ring specimens showed that intergranular cracking was the main fracture mode. Discrete slip steps were observed on intergranular fractured regions of each dose level specimens, which is associated as evidence of dislocation channeling. A threshold stress level which was close to 30% yield strength was determined on various testing results from literature and this study. Data scatter was observed for those results from different studies but all agreed on that the failure rate increases with stress level and neutron dose.</p></div>","PeriodicalId":100337,"journal":{"name":"Corrosion Communications","volume":"16 ","pages":"Pages 1-13"},"PeriodicalIF":0.0,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2667266924000422/pdfft?md5=e6c4edc8a36c0c5d245f7f5b3de69748&pid=1-s2.0-S2667266924000422-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142232673","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Polymers and their composites for corrosion inhibition application: Development, advancement, and future scope–A critical review","authors":"Himanshi Bairagi ,&nbsp;Priya Vashishth ,&nbsp;Gopal Ji ,&nbsp;Sudhish Kumar Shukla ,&nbsp;Eno E. Ebenso ,&nbsp;Bindu Mangla","doi":"10.1016/j.corcom.2023.10.006","DOIUrl":"10.1016/j.corcom.2023.10.006","url":null,"abstract":"<div><p>In the last decades, corrosion control of metals and their alloys has been of environmental, aesthetic, economic, and technical importance. Ecologically acceptable, environment-friendly, and readily available corrosion inhibitors are one of the best options for protecting metals against corrosion. In this regard, use of polymers for inhibiting metallic corrosion is an authentic and acceptable practice, with a low environmental threat. Polymers may be used as composites, blends, or isolation for optimal inhibitory effects. Inhibition efficiencies of corrosion inhibitors were determined using mass loss, electrochemical impedance spectroscopy, potentiodynamic polarization techniques, etc. The present study gives the idea about natural, synthetic, and conducting polymers and their utilization for corrosion inhibition applications. Effects of halide ions as additives or surfactants on their anticorrosion performances are also discussed. Polymeric materials as coatings are reviewed to align with recent research interests, such as cost-effectiveness, environment friendliness, and self-healing products, which are more convenient to synthesize and use in future applications.</p></div>","PeriodicalId":100337,"journal":{"name":"Corrosion Communications","volume":"15 ","pages":"Pages 79-94"},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2667266924000410/pdfft?md5=3463766d62239900e0d4f4b8edb60208&pid=1-s2.0-S2667266924000410-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142129335","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhanced corrosion resistance of TiAlMo alloy through solid state transformation driven by rapid solidification","authors":"Chonghao Sun,&nbsp;Haoran Li,&nbsp;Luyuan Li,&nbsp;Ying Ruan","doi":"10.1016/j.corcom.2023.09.005","DOIUrl":"10.1016/j.corcom.2023.09.005","url":null,"abstract":"<div><div>Rapid solidification of undercooled liquid Ti₅₀Al₄₄Mo₆ alloy was realized by electromagnetic levitation. Primary (<em>β</em>Ti) dendrite grew rapidly from melt with decreasing temperature. As undercooling increased, nucleation rate and growth driving force of primary (<em>β</em>Ti) dendrites increased. Growth velocity of primary (<em>β</em>Ti) dendrite increased significantly, reaching 13.5 m·s^-1 at the maximum undercooling (233 K). After solidification, primary (<em>β</em>Ti) dendrite decomposed simultaneously through <em>β</em>→<em>α</em>→<em>α</em>₂ transformation and martensite transformation <em>β</em>→<em>γ</em>. Homogeneity of solute distribution in primary (<em>β</em>Ti) phase affects the solid-state phase transformation mode. Solid-state phase transition was mainly dominated by diffusion-controlled <em>β</em>→<em>α</em>→<em>α</em>₂ transformation at small undercooling. Solid-state phase transition gradually was dominated by displacive martensite transformation at deep undercoolings, and corresponding microstructure was mainly characterized by more refined martensite needles. The refined microstructure and martensite transformation domination contributed to the formation of passivation films with improved corrosion resistance. Moreover, this weakens micro-galvanic effect, significantly reduces size of pits, maintains corrosion scales over pits to effectively alleviate the corrosion process, and consequently enhances corrosion resistance.</div></div>","PeriodicalId":100337,"journal":{"name":"Corrosion Communications","volume":"16 ","pages":"Pages 35-42"},"PeriodicalIF":0.0,"publicationDate":"2024-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142657425","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Formation mechanism and properties of superhydrophobic surface of ship plate steel","authors":"Xiandong Su ,&nbsp;Yiqing Chen ,&nbsp;Hongyu San ,&nbsp;Peng Gao ,&nbsp;Bin Zhong ,&nbsp;Kaizhi Sha ,&nbsp;Lin Li ,&nbsp;Fangfang Ai ,&nbsp;Shengjie Zhang","doi":"10.1016/j.corcom.2023.11.003","DOIUrl":"10.1016/j.corcom.2023.11.003","url":null,"abstract":"<div><div>Superhydrophobic surface of ship plate steel was constructed by chemical etching and low surface energy modification. Formation mechanism and properties of the superhydrophobic surface were investigated through SEM, FT-IR, electrochemical analysis and anti-icing evaluation. Corrosion and dissolution of ferrite creates a high-roughness surface with a micro-nano composite structure, and a monomolecular layer of low surface energy material covers steel surface through chelation coordination of stearic acid and Fe, which endows ship plate steel surface with superhydrophobicity. Compared with bare steel, the superhydrophobic surface shows high corrosion resistance, while 75.2% of surface icing is prevented, achieving the purpose of anti-water, anti-icing and corrosion resistance of ship plate steel. In addtion, the simple and cost-effective preparation technique is conducive to large-scale industrial applications in the future.</div></div>","PeriodicalId":100337,"journal":{"name":"Corrosion Communications","volume":"16 ","pages":"Pages 43-51"},"PeriodicalIF":0.0,"publicationDate":"2024-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141844819","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Atmospheric corrosion of tin coating on T2 copper in Xiangtan, China","authors":"Jun Wang ,&nbsp;Xiaobao Zhou ,&nbsp;Yi Xie ,&nbsp;Song Xu ,&nbsp;Zelun Ouyang ,&nbsp;Xuankai Wang ,&nbsp;Dengke Li ,&nbsp;Cong Li ,&nbsp;Tangqing Wu","doi":"10.1016/j.corcom.2024.02.002","DOIUrl":"10.1016/j.corcom.2024.02.002","url":null,"abstract":"<div><div>Atmospheric corrosion of tin coating on copper was explored to understand the differences in corrosion behavior between the skyward and earthward surfaces of the tin coating. Results show that average corrosion rate of the tin coating was 0.578 ± 0.051 and 1.137 ± 0.166 µm·y⁻¹ after one year and two years of exposure in Xiangtan, China, respectively. Corrosion rate of the tin coating during the second year of exposure was higher than that during the first year. SnO₂ was the main corrosion product of the tin coating. Localized corrosion vulnerabilty of the skyward surface was higher than that of the earthward surface during the first year of exposure, but it became lower than the latter during the second year. During the first year of exposure, <em>i</em>_corr values of the skyward and earthward surfaces were relatively low, but they sharply increased during the second year of exposure.</div></div>","PeriodicalId":100337,"journal":{"name":"Corrosion Communications","volume":"16 ","pages":"Pages 52-60"},"PeriodicalIF":0.0,"publicationDate":"2024-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141853448","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}