Corrosion Communications最新文献

{"title":"Effect of chloride ion content on pitting corrosion of dispersion-strengthened-high-strength steel","authors":"Ping Li,&nbsp;Min Du","doi":"10.1016/j.corcom.2022.03.005","DOIUrl":"10.1016/j.corcom.2022.03.005","url":null,"abstract":"<div><p>Chloride ion is an important corrosion factor in marine environment. Chloride ion has a small radius and strong permeability, which can destroy the oxide film on the surface of marine structural steel. The uneven adsorption of chloride ion on the metal surface will cause pitting corrosion. The effect of chloride ion content on pitting corrosion of the as-cast and heat-treated Dispersion-Strengthened-High-Strength (DSHS) steel was studied by electrochemical test, composition analysis and surface analysis. The results showed that high content of chloride ion reduced the content of dissolved oxygen in the solution, and the corrosion rate of DSHS steel was the slowest in 5.0 wt.% NaCl solution. In high content chloride ion solution, the formation of <em>α</em>-FeOOH was inhibited and the protection of corrosion products was weakened. Pitting corrosion of DSHS steel before and after heat treatment was the most serious in 2.0 wt.% NaCl solution. After heat treatment, grain size of DSHS steel decreased, and more dense and stable protective corrosion products were produced. Therefore, the induction and development of pitting corrosion of heat-treated DSHS steel were inhibited.</p></div>","PeriodicalId":100337,"journal":{"name":"Corrosion Communications","volume":"7 ","pages":"Pages 23-34"},"PeriodicalIF":0.0,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2667266922000469/pdfft?md5=893571dc0f801867bfb862871142d082&pid=1-s2.0-S2667266922000469-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73487687","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":"Evidence of hydrogen gas evolution accelerating the cathodic coating delamination","authors":"Chenrong Gu,&nbsp;Junying Hu,&nbsp;Xiankang Zhong","doi":"10.1016/j.corcom.2022.04.001","DOIUrl":"10.1016/j.corcom.2022.04.001","url":null,"abstract":"<div><p>For coated pipelines with cathodic protection, cathodic delamination has been recognized as one of the main causes of coating degradation. A thorough understanding of the cathodic delamination mechanism would benefit to pipeline integrity. The mechanism of local alkalization has been taken root in recent years, while the contribution of hydrogen gas evolution is still controversial. In this work, the mixed-potential theory was introduced to calculate the test time ratio of cathodic delamination, with or without hydrogen gas. The wire-beam electrode was also used to monitor the local electrochemical information. The results show that the hydrogen gas remarkably promotes the delamination process. For 100 <em>μ</em>m single layer epoxy coating, when the applied cathodic potential was −1.5 V (vs. SCE), the contribution of hydrogen gas is around 38.7%. The findings will help build a full understanding of cathodic delamination and provide new insight into its mitigation.</p></div>","PeriodicalId":100337,"journal":{"name":"Corrosion Communications","volume":"7 ","pages":"Pages 63-69"},"PeriodicalIF":0.0,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2667266922000366/pdfft?md5=65ad9fba740730c5188839d65511d0dd&pid=1-s2.0-S2667266922000366-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76758258","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":"Understanding the anti‐corrosion characteristics of a newly synthesized Schiff's base: an experimental and computational approach","authors":"Raman Kumar ,&nbsp;Gurmeet Singh","doi":"10.1016/j.corcom.2022.05.002","DOIUrl":"10.1016/j.corcom.2022.05.002","url":null,"abstract":"<div><p>This paper presents an economically viable and sustainable method to combat depletion of extensively used mild steel alloy in industries exposed to a stagnant 0.5 mol/L sulphuric acid (H₂SO₄) environment via a newly synthesized and characterized inhibitor namely 3-(2-amino-3-methylphenyl)imino)methyl)benzaldehyde (AMMB). The fabrication of this additive was performed at room temperature (298 K) using eco-friendly solvents and reactants. The highest protection efficiency recorded was 98.73% at 298 K temperature. Comprehensive nature of the corrosion inhibition mechanism was ascertained using state of the art electrochemical (galvanostatic polarization, LPR, and EIS) and morphological (ATR, AFM, SEM-EDS) studies. These investigations also revealed the formation of complexes between metal and inhibitor molecules. The complexes formed on the metal substrate encase the entire surface, which accounts for the observed high inhibition efficiency. The quantum mechanical modeling of AMMB molecule and temperature kinetics study supplemented the predicted results from preceding techniques.</p></div>","PeriodicalId":100337,"journal":{"name":"Corrosion Communications","volume":"7 ","pages":"Pages 51-62"},"PeriodicalIF":0.0,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2667266922000433/pdfft?md5=c9346877330c0a60ad5afd5657d0b8c8&pid=1-s2.0-S2667266922000433-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87797114","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":"Effect of heat treatment process on precipitation and corrosion resistance of S31254 super austenitic stainless steel containing cerium","authors":"Xiaoli Zhang, Maonian Xun, Jin-yao Ma, Xiaohong Liang, Cai-li Zhang, Hua-bing Li, Zhouhua Jiang, G. Fan, P. Han","doi":"10.1016/j.corcom.2022.06.001","DOIUrl":"https://doi.org/10.1016/j.corcom.2022.06.001","url":null,"abstract":"","PeriodicalId":100337,"journal":{"name":"Corrosion Communications","volume":"41 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91490476","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Tailoring hydrogen embrittlement resistance of pure Ni by grain boundary engineering","authors":"Qingqing Sun ,&nbsp;Jinhua Han ,&nbsp;Jiaxing Li ,&nbsp;Fahe Cao ,&nbsp;Shuai Wang","doi":"10.1016/j.corcom.2022.02.003","DOIUrl":"10.1016/j.corcom.2022.02.003","url":null,"abstract":"<div><p>By using thermo-mechanical processing, 99.996 wt.% pure Ni with different grain boundary characteristics were fabricated (Sample #1, 700 ℃ × 10 h + cold rolling reduction 50%+ 650 ℃ × 2 h; Sample #2, 700 ℃ × 10 h + cold rolling reduction 50%+ 900 ℃ × 5 min). Hydrogen embrittlement sensitivity of the two samples was determined by using high-pressure hydrogen charging, low strain rate tensile test and SEM fractography. Compared with Sample #1, hydrogen embrittlement index of Sample #2 increased from 0.52 to 0.71. The effects of grain size, grain boundary type and grain boundary curviness on hydrogen embrittlement of pure Ni were discussed. The results indicate that: 1) special grain boundaries including twin grain boundaries may have a marginal effect on tailoring hydrogen embrittlement resistance in pure Ni; 2) increasing grain boundary curviness is an effective way to improve hydrogen embrittlement resistance of Ni.</p></div>","PeriodicalId":100337,"journal":{"name":"Corrosion Communications","volume":"6 ","pages":"Pages 48-51"},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2667266922000342/pdfft?md5=2913583ce066f587b8052c37e8d72eab&pid=1-s2.0-S2667266922000342-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77359604","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":"A novel approach used to study the corrosion susceptibility of metallic materials at a dynamic seawater/air interface","authors":"Da-Hai Xia ,&nbsp;Yingchang Mao ,&nbsp;Yu Zhu ,&nbsp;Quan Yuan ,&nbsp;Cheng-Man Deng ,&nbsp;Wenbin Hu","doi":"10.1016/j.corcom.2022.03.001","DOIUrl":"10.1016/j.corcom.2022.03.001","url":null,"abstract":"<div><p>A novel device is constructed to study the localized corrosion susceptibility of 2024 aluminum alloy at a dynamic seawater/air interface. Corrosion in three distinct regions are identified: full immersion region, seawater/air interfacial region (alternant wet/dry region), and atmosphere region. The corrosion process in the interfacial region over time was studied by EIS and the corrosion product was characterized by SEM. Experimental results revealed that, a layer of intense and uniform corrosion product was formed on the seawater/air interfacial region, due to the oxygen enrichment in that region. Pitting corrosion was more severe in the full immersion region than that in the seawater/air interface, as verified by a lower charge transfer resistance and more severe pitting corrosion and intergranular corrosion extent.</p></div>","PeriodicalId":100337,"journal":{"name":"Corrosion Communications","volume":"6 ","pages":"Pages 62-66"},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2667266922000135/pdfft?md5=a751b941240e965b975f3b31479ef41e&pid=1-s2.0-S2667266922000135-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79373272","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":"Oxidation behaviors of the rotary friction welded joints of HT700 superalloy in saturated water steam at 700 ℃","authors":"Chunlin Huang ,&nbsp;Jintao Lu ,&nbsp;Ming Zhu ,&nbsp;Yaxin Xu ,&nbsp;Boshuai Li ,&nbsp;Yongli Zhou ,&nbsp;Jinyang Huang","doi":"10.1016/j.corcom.2021.11.008","DOIUrl":"https://doi.org/10.1016/j.corcom.2021.11.008","url":null,"abstract":"<div><p>The oxidation behavior of welded joints with or without heat-treatment of HT700 alloy was studied in 700 ℃ saturated water vapor with regards to oxidation kinetics, oxide film composition, and microstructure. The results show that the oxide film compositions of the as-welded joints and heat-treated welded joints were basically the same. The oxide film is composed of a small amount of iron oxide, NiCr₂O₄, and a large amount of Cr₂O₃ from the outer layer to the inner layer, with a small amount of internal oxidation products Al₂O₃. At the beginning of the oxidation process, the double layer oxide film grew at the same time, so that the as-welded joint had better performance in the later stage of oxidation. The formation of a continuous internal oxidation layer was later in heat-treated welded joints as compared to the as-welded joint, resulting in a larger thickness of the oxide film. The oxidation behavior of the welded seams in different regions of as-welded state and heat treatment state after welding displayed the following characteristics: small grain size, thin oxide film, and the weld fusion line with thin oxide film.</p></div>","PeriodicalId":100337,"journal":{"name":"Corrosion Communications","volume":"6 ","pages":"Pages 40-47"},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2667266922000251/pdfft?md5=15cb4811996a961c8e962bcacd19bd61&pid=1-s2.0-S2667266922000251-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"137408561","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":"Finite element analysis on temperature field and stress distribution of thermal barrier coatings by laser modification and CMAS corrosion","authors":"Jiayi Feng ,&nbsp;Jing Wu ,&nbsp;Lei Guo ,&nbsp;Hexin Guo","doi":"10.1016/j.corcom.2021.12.002","DOIUrl":"10.1016/j.corcom.2021.12.002","url":null,"abstract":"<div><p>Laser glazing to produce a modified layer on the surface of thermal barrier coatings (TBCs) is a promising method to alleviate calcium-magnesium-alumina-silicate (CMAS) attacks to coatings. In this study, finite element analysis is carried out to investigate the temperature field and stress distribution of TBCs after the laser glazing process and the modified TBCs after CMAS corrosion. Results revealed that along the direction of laser scanning, the principal stress was in a tensile state, which increased along the direction of the laser spot movement; while perpendicular to the laser scanning direction, the maximum principal stress appeared at the interface between the glazed layer and the unmodified coating, where could be a potential danger zone for crack initiation and coating spallation. For the modified TBCs with CMAS attack, in regions that are located in the range of 0–6 mm along the radial direction, the radial stress and maximum principal stress were high (∼1094 MPa), and the coating edge had complex shear stress state; as a result, these areas were easy to crack.</p></div>","PeriodicalId":100337,"journal":{"name":"Corrosion Communications","volume":"6 ","pages":"Pages 29-39"},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2667266922000275/pdfft?md5=60c5eac4a1a41a6a493cd686cb68cb22&pid=1-s2.0-S2667266922000275-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78346334","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":"Some fundamental understandings of Zn-injection water chemistry on material corrosion in pressurized water reactor primary circuit","authors":"Xinqiang Wu,&nbsp;Xiahe Liu,&nbsp;Ziyu Zhang,&nbsp;Jibo Tan,&nbsp;En-Hou Han,&nbsp;Wei Ke","doi":"10.1016/j.corcom.2021.12.004","DOIUrl":"10.1016/j.corcom.2021.12.004","url":null,"abstract":"<div><p>The optimization of water chemistry in pressurized water reactor (PWR) primary circuit is one of the most effective ways to achieve both safety and economy for operating PWR nuclear power plants (NPPs). Special attention has been paid to fundamental research and engineering application of Zn-injection water chemistry (ZWC) in PWR primary circuit in recent years in China due to the rapid development of nuclear power. The present paper mainly reports the status of PWR NPPs in China and some fundamental understandings of ZWC on material corrosion. Effects of temperature (<em>T</em>), pH at <em>T</em> value, Zn concentration, Zn-injection sequence and lasting time on electrochemical corrosion behavior, oxide film characteristic and stress corrosion cracking (SCC) susceptibility of nuclear-grade austenitic alloys were investigated. A modified point defect model was used to discuss the effects of ZWC on the oxide films in high-temperature pressurized water. Some water chemistry parameters in PWR primary coolant system are proposed for mitigating corrosion and SCC of nuclear-grade austenitic alloys.</p></div>","PeriodicalId":100337,"journal":{"name":"Corrosion Communications","volume":"6 ","pages":"Pages 52-61"},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2667266922000354/pdfft?md5=31333503d4caa64cd2bc5d3958655928&pid=1-s2.0-S2667266922000354-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90653288","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":"In vitro degradation and biocompatibility of vitamin C loaded Ca-P coating on a magnesium alloy for bioimplant applications","authors":"Xue-Mei Wang ,&nbsp;Guan-Jie Lu ,&nbsp;Lan-Yue Cui ,&nbsp;Cheng-Bao Liu ,&nbsp;M. Bobby Kannan ,&nbsp;Fen Zhang ,&nbsp;Shuo-Qi Li ,&nbsp;Yu-Hong Zou ,&nbsp;Rong-Chang Zeng","doi":"10.1016/j.corcom.2022.03.004","DOIUrl":"10.1016/j.corcom.2022.03.004","url":null,"abstract":"<div><p>Molecular recognition was utilized to fabricate bioinspired calcium phosphate (Ca-P) coating on bioabsorbable magnesium alloys through small biomolecules such as Vitamin C (VC). Ca-P and VC hybrid coating (Ca-P_VC) was successfully fabricated on AZ31 Mg alloy. The surface morphology and chemical composition of the coatings were investigated using SEM, XRD, and FTIR together with XPS. The results showed that the Ca-P_VC coating was composed of bamboo leaf-like Ca-P particles with a thickness of about three times that of the Ca-P coating. The surface roughness of the Ca-P_VC coating (1.12 ± 0.12 μm) was lower than that (3.14 ± 1.93 μm) of Ca-P coating, suggesting the formation of refined Ca-P particles resulting from the VC addition. The corrosion resistance of the coated samples was characterized via electrochemical polarization, impedance spectroscopy, and immersion hydrogen evolution tests. The cell toxicity of the coated samples was evaluated utilizing mouse MC3T3-E1 pre-osteoblasts. The charge transfer resistance (<em>R</em>_ct) of the Ca-P_VC coated alloy increased as compared to the bare and Ca-P coated alloy samples. The Ca-P_VC coated alloy exhibited minimal corrosion current density (1.36 × 10⁻⁶ A cm⁻²), which is one order of magnitude lower in comparison to that of the Ca-P coated alloy. These results confirm that VC addition greatly enhanced the coating resistance on AZ31 Mg alloy. It was also noticed that the Ca-P_VC coated samples rapidly induced the formation of apatite after immersion in Hank's solution. VC was mainly transformed to L-Threonic acid, which facilitated the nucleation process of the Ca-P_VC coating and significantly increased the thickness, density, and bonding strength of the coating. With enhanced corrosion resistance property and excellent biocompatibility, Ca-P_VC coating has great potential for application in biodegradable Mg-based alloys.</p></div>","PeriodicalId":100337,"journal":{"name":"Corrosion Communications","volume":"6 ","pages":"Pages 16-28"},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S266726692200024X/pdfft?md5=9f8bdc1f251df0da211b0a9a01e0aa1a&pid=1-s2.0-S266726692200024X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86178874","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}