{"title":"Enhanced corrosion resistance of TiAlMo alloy through solid state transformation driven by rapid solidification","authors":"Chonghao Sun, Haoran Li, Luyuan Li, 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 Ti<sub>50</sub>Al<sub>44</sub>Mo<sub>6</sub> 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<sup>-1</sup> 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><sub>2</sub> 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><sub>2</sub> 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}
Xiandong Su , Yiqing Chen , Hongyu San , Peng Gao , Bin Zhong , Kaizhi Sha , Lin Li , Fangfang Ai , Shengjie Zhang
{"title":"Formation mechanism and properties of superhydrophobic surface of ship plate steel","authors":"Xiandong Su , Yiqing Chen , Hongyu San , Peng Gao , Bin Zhong , Kaizhi Sha , Lin Li , Fangfang Ai , 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}
Jun Wang , Xiaobao Zhou , Yi Xie , Song Xu , Zelun Ouyang , Xuankai Wang , Dengke Li , Cong Li , Tangqing Wu
{"title":"Atmospheric corrosion of tin coating on T2 copper in Xiangtan, China","authors":"Jun Wang , Xiaobao Zhou , Yi Xie , Song Xu , Zelun Ouyang , Xuankai Wang , Dengke Li , Cong Li , 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<sup>−1</sup> 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. SnO<sub>2</sub> 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><sub>corr</sub> 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}
Ya Meng , San-xi Deng , Zhen-zhen Liu , Hui Xiang , Heng-shi Li , Yuan Wang , Yuan-Ming Yan , Jin-Feng Li , Rui-Feng Zhang
{"title":"Analyzing through-thickness corrosion homogeneity of stabilized AA5083 alloy after artificial sensitization","authors":"Ya Meng , San-xi Deng , Zhen-zhen Liu , Hui Xiang , Heng-shi Li , Yuan Wang , Yuan-Ming Yan , Jin-Feng Li , Rui-Feng Zhang","doi":"10.1016/j.corcom.2024.03.002","DOIUrl":"10.1016/j.corcom.2024.03.002","url":null,"abstract":"<div><div>Through-thickness corrosion homogeneity of stabilized AA5083 alloy thick plate was investigated. For the as-received stabilized plates, no differences in corrosion behavior are evident in the specimens from different sampling positions along the thickness direction. However, in the plates after sensitization, the specimen from the surface position (T/10, SP) exhibits the highest degree of sensitization (DoS) and stress corrosion cracking (SCC) susceptibility, indicating the through-thickness corrosion inhomogeneity. Compared with interlayer position (3T/10, IP) and center position (T/2, CP), the higher grain stored energy and richer high angle grain boundaries (HAGBs) in SP specimens promote the formation of <em>β</em> phases (Al<sub>3</sub>Mg<sub>2</sub>) during the sensitization process. It results in a high coverage of <em>β</em> phases in the SP specimen and therefore induces severe corrosion.</div></div>","PeriodicalId":100337,"journal":{"name":"Corrosion Communications","volume":"16 ","pages":"Pages 24-34"},"PeriodicalIF":0.0,"publicationDate":"2024-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141702408","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}
Ukashat Mamudu , Jose Hernandez Santos , Saviour A. Umoren , Mohamad Sahban Alnarabiji , Ren Chong Lim
{"title":"Investigations of corrosion inhibition of ethanolic extract of Dillenia suffruticosa leaves as a green corrosion inhibitor of mild steel in hydrochloric acid medium","authors":"Ukashat Mamudu , Jose Hernandez Santos , Saviour A. Umoren , Mohamad Sahban Alnarabiji , Ren Chong Lim","doi":"10.1016/j.corcom.2023.10.005","DOIUrl":"10.1016/j.corcom.2023.10.005","url":null,"abstract":"<div><p>The utilization of plant extracts as environmentally friendly corrosion inhibitors has garnered considerable interest in the field of metallic corrosion protection. The primary objective of this study was to explore a new approach for utilizing <em>Dillenia suffruticosa</em> leaves extract (DSLE) to provide corrosion protection for mild steel (MS) in a molar hydrochloric acid solution. The phytocompounds responsible for corrosion prevention were extracted using ethanol with Soxhlet apparatus. The effectiveness of the extract as a corrosion inhibitor was evaluated through gravimetric and electrochemical methods, along with surface analysis of the corroded steel samples. This analysis involved the use of scanning electron microscopy (SEM) and Fourier-transformed infrared spectroscopy (FTIR) to examine the specimens with and without addition of the extract as inhibitor. The findings demonstrate that DSLE exhibits notable efficacy as a corrosion inhibitor for MS in an acidic environment. The inhibition efficiency (IE) demonstrates a positive correlation with the concentration of the extract, ultimately reaching a maximum value of 81.4 % at the optimum concentration of 1000 mg/L of the extract investigated. Potentiodynamic polarization data revealed that the DSLE functions as a mixed-type inhibitor.</p></div>","PeriodicalId":100337,"journal":{"name":"Corrosion Communications","volume":"15 ","pages":"Pages 52-62"},"PeriodicalIF":0.0,"publicationDate":"2024-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2667266924000355/pdfft?md5=e2568337e40a4cd5cf645fd1a9e6a806&pid=1-s2.0-S2667266924000355-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142040084","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}
Shengkai Shi , Zhengrong Ye , Xiaoshuang Li , Xuexu Xu , Weimin Zhao , Jianbo Sun
{"title":"Corrosion damages of nickel-based alloy G3 in 600 °C H2OCO2H2SH2 steam","authors":"Shengkai Shi , Zhengrong Ye , Xiaoshuang Li , Xuexu Xu , Weimin Zhao , Jianbo Sun","doi":"10.1016/j.corcom.2023.09.004","DOIUrl":"10.1016/j.corcom.2023.09.004","url":null,"abstract":"<div><p>Corrosion damage mechanisms of nickel-based alloy G3 at 600 °C with a mixture of H<sub>2</sub>O, CO<sub>2</sub>, H<sub>2</sub>S and H<sub>2</sub> were explored using ultra-high-temperature and high-pressure corrosion experiments, slow strain rate tensile tests and a series of microscopic characterization methods. Results unveil that G3 alloy exhibited a low corrosion rate on average. The corrosion product film consists of two layers – an inner layer of Cr<sub>2</sub>O<sub>3</sub> and an outer layer of a mixture of Ni<sub>3</sub>S<sub>2</sub> and Cr<sub>2</sub>O<sub>3</sub>. The material experienced plasticity losses of 49.5 % and 24.3 % after corrosion and aging, respectively. Precipitation of M<sub>23</sub>C<sub>6</sub> at grain boundary occurred after corrosion and aging, resulting in chromium depletion and intergranular corrosion within weak grain boundary regions, which reduced plasticity of G3 alloy.</p></div>","PeriodicalId":100337,"journal":{"name":"Corrosion Communications","volume":"15 ","pages":"Pages 42-51"},"PeriodicalIF":0.0,"publicationDate":"2024-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S266726692400029X/pdfft?md5=e74b983674a607a3eea75adc75fe96c4&pid=1-s2.0-S266726692400029X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141961938","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":"Development of prediction model for stress corrosion cracking probability in scratched alloy 690TT heat transfer tubes","authors":"","doi":"10.1016/j.corcom.2024.05.001","DOIUrl":"10.1016/j.corcom.2024.05.001","url":null,"abstract":"<div><div>This study investigated stress corrosion cracking (SCC) behavior of scratched areas across various depths and stress on alloy 690TT, through precise loading (252 samples in total) and SCC tests. Resultsindicate that SCC mainly initiates at the side walls of the scratch grooves rather than the bottom (sustains the highest stress level), given the low applied load stress about 13% of that at the bottom. Scratch depth is a more significant factor to SCC initiation in scratch groove than loading stress. A probabilistic model was established to predict SCC initiation induced by scratches of varyingdepths.</div></div>","PeriodicalId":100337,"journal":{"name":"Corrosion Communications","volume":"19 ","pages":"Pages 1-13"},"PeriodicalIF":0.0,"publicationDate":"2024-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141407854","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 various rolling deformations on the microstructure, mechanical properties, corrosion behavior, and cytocompatibility of biodegradable Zn-0.5Mn alloys","authors":"","doi":"10.1016/j.corcom.2024.04.001","DOIUrl":"10.1016/j.corcom.2024.04.001","url":null,"abstract":"<div><div>In this work, the effects of various rolling deformations on the microstructural evolution, mechanical properties, corrosion behavior, and cytocompatibility of Zn-0.5Mn alloys were studied. When the rolling deformation is 85 %, the microstructure of the Zn-0.5Mn alloy becomes dendritic after repeated heating. Besides the distribution at the grain boundary, MnZn<sub>13</sub> started to be distributed in the intracrystalline. Meanwhile, the mechanical properties of the Zn-0.5Mn alloy reached the best. Its corrosion behavior under various rolling deformations was characterized by electrochemical and immersion tests. Results show that the alloy with 85 % rolling deformation has a slower corrosion rate in the early stage and a faster corrosion rate in the later stage. Cytocompatibility results show that a high concentration of rolled Zn-0.5Mn alloy extract has slight toxicity to MC3T3-E1 cells. After dilution, the alloy with 85 % rolling deformation shows the best cytocompatibility.</div></div>","PeriodicalId":100337,"journal":{"name":"Corrosion Communications","volume":"18 ","pages":"Pages 1-18"},"PeriodicalIF":0.0,"publicationDate":"2024-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141405226","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}
Rui Liu , Rui Zhang , Yu Cui , Aidi Wang , Fandi Meng , Li Liu , Fuhui Wang
{"title":"Failure mechanism of Al-Zn-In sacrificial anode under the synergic action of water pressure and fluid in the extreme deep-sea environment","authors":"Rui Liu , Rui Zhang , Yu Cui , Aidi Wang , Fandi Meng , Li Liu , Fuhui Wang","doi":"10.1016/j.corcom.2023.07.002","DOIUrl":"10.1016/j.corcom.2023.07.002","url":null,"abstract":"<div><p>Corrosion failure of sacrificial anodes in extreme deep-sea environment is a key problem in metal protection technology. This study investigated the failure mechanism of the Al-Zn-In sacrificial anode under the synergic action of water pressure and fluid flow, by microstructure characterization and finite element analysis. The results exhibit that water pressure promotes the dissolution of Al-Zn-In alloy near the precipitates that are enriched at the grain boundaries. The flow amplifies the promoting effect of the pressure on anodic dissolution by inhibiting the formation of corrosion layers, and it accelerates the mass loss by mechanically aggressing the aluminum matrix. The synergic effect of water pressure and fluid flow results in a rapid degradation in the extreme deep-sea environment.</p></div>","PeriodicalId":100337,"journal":{"name":"Corrosion Communications","volume":"14 ","pages":"Pages 39-48"},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S266726692400015X/pdfft?md5=555b3b5ff1914835535fe81bb98f608e&pid=1-s2.0-S266726692400015X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140404648","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":"Corrosion of underground infrastructures under metro-induced stray current: A review","authors":"Chengtao Wang , Guojin Qin","doi":"10.1016/j.corcom.2023.08.005","DOIUrl":"10.1016/j.corcom.2023.08.005","url":null,"abstract":"<div><p>Corrosion poses a significant risk to critical infrastructures. Practice indicates that metro-induced stray current corrosion is a significant threat to underground infrastructures, which may be an obstacle to expanding the subway transportation network. The present study employed bibliometric analysis to capture the evolution of research progress, gaps, and future directions in this field. A comprehensive review was conducted on the mechanisms of stray current corrosion in subway systems and its detrimental effects on track infrastructure. Commentaries emphasized the importance of incorporating measures to address stray current corrosion into the construction, design, and planning of subway projects. Specific recommendations were put forth for governments, industries, and research institutions, encompassing policy considerations, safety measures, economic factors, and technological advancements.</p></div>","PeriodicalId":100337,"journal":{"name":"Corrosion Communications","volume":"14 ","pages":"Pages 23-38"},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2667266924000161/pdfft?md5=68c45c68c30d77b2a6838eddcfbb1dcc&pid=1-s2.0-S2667266924000161-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140406419","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}