Corrosion Communications最新文献_第5页

Effects of dissolved oxygen on the corrosion-related unidentified deposit formed of 304 SS in the flow accelerated zone under the simulated secondary water chemistry 溶解氧对模拟二次水化学条件下 304 SS 在水流加速区形成的与腐蚀有关的不明沉积物的影响

Corrosion Communications Pub Date : 2024-05-24 DOI: 10.1016/j.corcom.2024.02.001

{"title":"Effects of dissolved oxygen on the corrosion-related unidentified deposit formed of 304 SS in the flow accelerated zone under the simulated secondary water chemistry","authors":"","doi":"10.1016/j.corcom.2024.02.001","DOIUrl":"10.1016/j.corcom.2024.02.001","url":null,"abstract":"<div><p>Effects of dissolved oxygen (DO) on the deposition characteristics of corrosion-related unidentified deposit (CRUD) were investigated by using 304 stainless steel micro-orifices. The main results indicate that the change of DO concentration resulted in a change of the composition of the outermost deposition layer. The DO concentration amplifies/diminishes the porosity in CRUD effect by changing the rate of ion transport. Meanwhile, the electrokinetic effect is weakened by the decrease of the thickness of the electric double layer, which is caused by the dissolution of Cr ions increased by increasing the DO concentration. Meanwhile, the chromium ion concentration increases with the dissolved oxygen concentration, which leads to a decrease in the thickness of the electric double layer, weakening the electrodynamic effect. The above results in the thickness and width of CRUD in the flow acceleration zone vary in varying degrees. This suggests that the deposition process of CRUD occurs under the mechanism of mass transfer and electrokinetic mechanism.</p></div>","PeriodicalId":100337,"journal":{"name":"Corrosion Communications","volume":"16 ","pages":"Pages 14-23"},"PeriodicalIF":0.0,"publicationDate":"2024-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2667266924000227/pdfft?md5=15db6b30ddbb71cc81a8cb8abcd3192b&pid=1-s2.0-S2667266924000227-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141134951","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}

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Importance of the autoclave testing parameters on the initial stage of corrosion under CO2-containing geothermal environments 高压釜试验参数对含二氧化碳地热环境下初期腐蚀的重要性

Corrosion Communications Pub Date : 2024-05-24 DOI: 10.1016/j.corcom.2023.10.004

{"title":"Importance of the autoclave testing parameters on the initial stage of corrosion under CO2-containing geothermal environments","authors":"","doi":"10.1016/j.corcom.2023.10.004","DOIUrl":"10.1016/j.corcom.2023.10.004","url":null,"abstract":"<div><p>Autoclave corrosion testing has been used for many years; however, few have studied the effect of its shortcomings on the formation of corrosion products and corrosion behaviour. In particular, understanding of these effects under high temperature and high pressure (HTHP) is rare. In this study, we highlighted the important parameters such as heating periods, flow rates and volume-to-surface ratios influencing carbon steel corrosion in the early stages. Especially, characterisation and protection behaviour of corrosion products associated with corrosion behaviour in the heating stage under the geothermal CO<sub>2</sub>-containing environment were systematically studied via mass loss, in-situ electrochemistry and surface analysis techniques. The roles of <span><math><msub><mi>p</mi><mrow><mi>C</mi><msub><mi>O</mi><mn>2</mn></msub></mrow></msub></math></span>, volume-to-surface ratio and flow rate influence the formation of the corrosion products in the early stage are also evaluated.</p></div>","PeriodicalId":100337,"journal":{"name":"Corrosion Communications","volume":"15 ","pages":"Pages 63-78"},"PeriodicalIF":0.0,"publicationDate":"2024-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2667266924000215/pdfft?md5=c613ad0b03290496d882762414b7f9d4&pid=1-s2.0-S2667266924000215-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141142749","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}

引用次数: 0

Electrically conductive and corrosion resistant coating on MgLi alloys, Part I: Chemical conversion coating 镁锂合金导电耐腐蚀涂层，第 I 部分：化学转化涂层

Corrosion Communications Pub Date : 2024-05-03 DOI: 10.1016/j.corcom.2023.08.007

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Influence of thermomechanical treatment on the corrosion behaviour of 2A97 Al-Cu-Li alloy 热机械处理对 2A97 Al-Cu-Li 合金腐蚀行为的影响

Corrosion Communications Pub Date : 2024-05-01 DOI: 10.1016/j.corcom.2023.10.003

引用次数: 0

Inhibition of the second phase precipitation and improvement of intergranular corrosion resistance by boron segregation at the grain boundary of S31254 superaustenitic stainless steel 通过在 S31254 超奥氏体不锈钢晶界处偏析硼来抑制第二相析出并提高晶间耐腐蚀性能

Corrosion Communications Pub Date : 2024-04-01 DOI: 10.1016/j.corcom.2023.08.006

Jian Wang , Zhiqiang Liu , Haiyu Tian , Peide Han , Yaiza Gonzalez-Garcia

{"title":"Inhibition of the second phase precipitation and improvement of intergranular corrosion resistance by boron segregation at the grain boundary of S31254 superaustenitic stainless steel","authors":"Jian Wang , Zhiqiang Liu , Haiyu Tian , Peide Han , Yaiza Gonzalez-Garcia","doi":"10.1016/j.corcom.2023.08.006","DOIUrl":"https://doi.org/10.1016/j.corcom.2023.08.006","url":null,"abstract":"<div><p>The inhibition of Mo segregation and phase precipitation is vital for improving the hot workability and corrosion resistance of superaustentic stainless steels (SASS). The boron non-equilibrium segregation of S31254 SASS was implemented through solid solution, air cooling, and diffusion at low-temperature treatment (SADT). The precipitation process and intergranular corrosion (IGC) of S31254 SASS with various boron distributions were researched at a sensitive temperature. The second phases were observed and identified by SEM and TEM. IGC susceptibility was evaluated by double-loop potentiodynamic reactivation (DL-EPR) measurements. The SADT treatment promoted more segregation of B at the grain boundary, leading to lower amounts of grain boundary precipitation before aging for 6 h. The decrease of <em>σ</em> phases in B-regulated samples enhances the IGC resistance, compared with the samples without B addition specimens.</p></div>","PeriodicalId":100337,"journal":{"name":"Corrosion Communications","volume":"15 ","pages":"Pages 1-12"},"PeriodicalIF":0.0,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2667266924000173/pdfft?md5=e73077da617af5d60cd017db6bbc9564&pid=1-s2.0-S2667266924000173-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141424490","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}

引用次数: 0

Improving the corrosion resistance of FeCrAl alloy in high temperature hydrogenated water through gaseous pre-oxidation 通过气态预氧化提高铁铬铝合金在高温氢化水中的耐腐蚀性能

Corrosion Communications Pub Date : 2024-03-30 DOI: 10.1016/j.corcom.2024.03.001

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Effects of TiC particles on tribological and corrosion resistance of PEO coating on TC4 alloy TiC 颗粒对 TC4 合金上 PEO 涂层的摩擦学和耐腐蚀性能的影响

Corrosion Communications Pub Date : 2024-03-26 DOI: 10.1016/j.corcom.2023.10.002

Yan Tang, Cui-Ping Yang, Qing-Qing Sun, Lian-Kui Wu, Fa-He Cao

引用次数: 0

Improvement in corrosion resistance of AZ91D Mg alloy in simulated body fluid by cerium-based/stearic acid composite coatings 铈基/硬脂酸复合涂层改善 AZ91D 镁合金在模拟体液中的耐腐蚀性能

Corrosion Communications Pub Date : 2024-03-13 DOI: 10.1016/j.corcom.2023.08.004

A.P. Loperena, S.B. Saidman, I.L. Lehr

引用次数: 0

Influence mechanism of different elements and alloy phases on the corrosion resistance of Zn-Al-Mg coated steel in the atmospheric environment: A review 元素和合金相对大气环境中 Zn-Al-Mg 涂层钢耐腐蚀性的影响机理：综述

Corrosion Communications Pub Date : 2024-03-01 DOI: 10.1016/j.corcom.2023.11.001

Xin He , Xun Zhou , Ting Shang , Wuhua Liu , Guangrui Jiang , Chao Liu , Xuequn Cheng , Xin Zhang , Xiaogang Li

{"title":"Influence mechanism of different elements and alloy phases on the corrosion resistance of Zn-Al-Mg coated steel in the atmospheric environment: A review","authors":"Xin He , Xun Zhou , Ting Shang , Wuhua Liu , Guangrui Jiang , Chao Liu , Xuequn Cheng , Xin Zhang , Xiaogang Li","doi":"10.1016/j.corcom.2023.11.001","DOIUrl":"10.1016/j.corcom.2023.11.001","url":null,"abstract":"<div><p>Sacrificial metallic coatings are an effective strategy for mitigating corrosion in steel operating in industrial environments. This review article focuses on examining the protection mechanism of zinc-aluminum-magnesium (Zn-Al-Mg) coatings on steel substrates. Specifically, it investigates the effects of various elements and their corrosion products on the corrosion resistance of Zn-Al-Mg coatings. Furthermore, this review summarizes the formation mechanisms of various specialized corrosion modes that occur following the corrosion of Zn-Al-Mg coatings, based on previous experimental findings. It also includes suggestions for further research areas that could contribute to the development of highly corrosion-resistant and long-lasting coatings. These suggestions are based on published laboratory and field test results available in literature.</p></div>","PeriodicalId":100337,"journal":{"name":"Corrosion Communications","volume":"13 ","pages":"Pages 49-59"},"PeriodicalIF":0.0,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2667266924000057/pdfft?md5=c55d351c526e679a51caf6eb459e2a96&pid=1-s2.0-S2667266924000057-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139872366","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}

引用次数: 0

High-performance Cr2AlC MAX phase coatings for ATF application: Interface design and oxidation mechanism 用于 ATF 应用的高性能 Cr2AlC MAX 相涂层：界面设计和氧化机制

Corrosion Communications Pub Date : 2024-03-01 DOI: 10.1016/j.corcom.2023.10.001

Zhongchang Li , Zhenyu Wang , Guanshui Ma , Rende Chen , Wei Yang , Kaihang Wang , Peiling Ke , Aiying Wang

{"title":"High-performance Cr2AlC MAX phase coatings for ATF application: Interface design and oxidation mechanism","authors":"Zhongchang Li , Zhenyu Wang , Guanshui Ma , Rende Chen , Wei Yang , Kaihang Wang , Peiling Ke , Aiying Wang","doi":"10.1016/j.corcom.2023.10.001","DOIUrl":"10.1016/j.corcom.2023.10.001","url":null,"abstract":"<div><p>Surface-modified Zr-based alloy (ZIRLO) claddings with advanced ceramic coatings are increasingly required for accident-tolerant fuel (ATF) systems in light-water reactors. Cr<sub>2</sub>AlC MAX phase coatings are promising for this purpose owing to their remarkable properties combining radiation/oxidation/corrosion resistance. However they are suffering from weak interface compatibility to ZIRLO substrate and poor structural densities for long-term services. Herein, we fabricated densely high-purity Cr<sub>2</sub>AlC MAX phase coatings with uniquely designed Cr/CrC<em><sub>x</sub></em> interfacial layers. The oxidation behavior of the coatings was focused under steam environments at 1000–1200 °C. Results showed that Cr<sub>2</sub>AlC coatings exhibited an oxidation mass gain of 8.9 mg/cm<sup>2</sup> and an oxide thickness of 680 nm after oxidation at 1200 °C for 30 min, which were about 10% and 0.5% of ZIRLO substrate, respectively. Based on microstructural evolutions, the embedded interfacial layers significantly suppressed the rapid diffusion of Al in Cr<sub>2</sub>AlC coatings to the substrate and the premature delamination of oxidized coatings. Particularly, the formed oxides were identified as dense yet pure <em>α</em>-Al<sub>2</sub>O<sub>3</sub>, which endowed the protection against further oxidation and excellent resistance to high-temperature steam corrosion.</p></div>","PeriodicalId":100337,"journal":{"name":"Corrosion Communications","volume":"13 ","pages":"Pages 27-36"},"PeriodicalIF":0.0,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2667266924000021/pdfft?md5=f0855541aacb9c6e95c55808f3292523&pid=1-s2.0-S2667266924000021-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139688040","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}

引用次数: 0