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How aluminium additions improve the performance of zinc-rich organic coatings 铝添加剂如何改善富锌有机涂料的性能
IF 1.6 4区 材料科学
Materials and Corrosion-werkstoffe Und Korrosion Pub Date : 2024-07-19 DOI: 10.1002/maco.202414529
Isehaq Al-Nafai, Katarzyna Rzeszutek, Stuart Lyon, Christopher Jones, Douglas Beaumont
{"title":"How aluminium additions improve the performance of zinc-rich organic coatings","authors":"Isehaq Al-Nafai,&nbsp;Katarzyna Rzeszutek,&nbsp;Stuart Lyon,&nbsp;Christopher Jones,&nbsp;Douglas Beaumont","doi":"10.1002/maco.202414529","DOIUrl":"10.1002/maco.202414529","url":null,"abstract":"<p>Novel sacrificial zinc-rich organic coatings, with varying additions of aluminium, were prepared and tested for anticorrosion performance. Electrochemical measurements (potential vs. time and electrochemical impedance spectroscopy) were carried out to investigate cathodic protection and barrier performance while neutral salt spray and immersion experiments tested long-term performance. Analytical scanning electron microscopy and X-ray diffraction were used to characterize coatings before and after testing. Formulations containing aluminium significantly outperformed the standard 100% zinc-rich coating with the greatest improvement occurring at 10%–15% aluminium by volume in the dry film. This improvement was caused by the dispersal of aluminium between zinc particles, which improved packing and enabled greater efficiency in zinc consumption resulting in extended galvanic protection times for steel substrates. The expected zinc corrosion product (basic zinc chloride, simonkolleite) was present within the coating as well as a Zn–Al layered doubled hydroxide. The latter's presence demonstrates that dissolution of aluminium contributed to the longevity of the galvanic action. The new Zn–Al formulations are extremely promising alternatives to standard zinc-rich epoxy coatings, significantly reducing zinc loading and increasing the sacrificial lifetime.</p>","PeriodicalId":18225,"journal":{"name":"Materials and Corrosion-werkstoffe Und Korrosion","volume":"76 1","pages":"53-70"},"PeriodicalIF":1.6,"publicationDate":"2024-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/maco.202414529","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141743162","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Investigating the corrosion behavior of as-cast Mg-Zn-Ca alloys with the same Zn/Ca atomic ratio by in situ observation 通过原位观测研究具有相同锌/钙原子比的铸态镁锌钙合金的腐蚀行为
IF 1.6 4区 材料科学
Materials and Corrosion-werkstoffe Und Korrosion Pub Date : 2024-07-17 DOI: 10.1002/maco.202414362
Ye Tian, Yixuan Shao, Qianqian Yu, Shilei Guo, Ruofei Dang, Yiming Du, Guanhong Zhu, Shaoyuan Lyu, Minfang Chen
{"title":"Investigating the corrosion behavior of as-cast Mg-Zn-Ca alloys with the same Zn/Ca atomic ratio by in situ observation","authors":"Ye Tian,&nbsp;Yixuan Shao,&nbsp;Qianqian Yu,&nbsp;Shilei Guo,&nbsp;Ruofei Dang,&nbsp;Yiming Du,&nbsp;Guanhong Zhu,&nbsp;Shaoyuan Lyu,&nbsp;Minfang Chen","doi":"10.1002/maco.202414362","DOIUrl":"10.1002/maco.202414362","url":null,"abstract":"<p>The alloying contents with the same Zn/Ca atomic ratio of 0.13 on the corrosion behavior of Mg-Zn-Ca (ZX) alloys were investigated. The second phases in ZX10, ZX20, ZX30, and ZX51 alloys were identical with a majority of Mg<sub>2</sub>Ca and very few Ca<sub>2</sub>Mg<sub>6</sub>Zn<sub>3</sub> and their distribution changed from isolated to continuous state in ZX30 and ZX51. ZX10 had the lowest corrosion rate of 0.55 mm/year after 168 h immersion in simulated body fluid solution due to the smallest number of sites of galvanic corrosion. The corrosion rate of ZX30 alloy was the highest (0.72 mm/year), while though ZX51 alloy had the most Mg<sub>2</sub>Ca, its corrosion rate was reduced to 0.69 mm/year, resulting from the small size and thin Mg<sub>2</sub>Ca. In situ microstructure observation demonstrated the high fraction Mg<sub>2</sub>Ca phase and continuous Mg<sub>2</sub>Ca with bulky size were the main reason for the fast corrosion rate.</p>","PeriodicalId":18225,"journal":{"name":"Materials and Corrosion-werkstoffe Und Korrosion","volume":"75 11","pages":"1472-1483"},"PeriodicalIF":1.6,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141746155","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
High-temperature oxidation of Cu–Al–Ni–Mn shape-memory alloy 铜-铝-镍-锰形状记忆合金的高温氧化
IF 1.6 4区 材料科学
Materials and Corrosion-werkstoffe Und Korrosion Pub Date : 2024-07-16 DOI: 10.1002/maco.202414438
Edelize Angélica Gomes, Renato Altobelli Antunes, Eric Marchezini Mazzer, Vanessa de Freitas Cunha Lins
{"title":"High-temperature oxidation of Cu–Al–Ni–Mn shape-memory alloy","authors":"Edelize Angélica Gomes,&nbsp;Renato Altobelli Antunes,&nbsp;Eric Marchezini Mazzer,&nbsp;Vanessa de Freitas Cunha Lins","doi":"10.1002/maco.202414438","DOIUrl":"10.1002/maco.202414438","url":null,"abstract":"<p>The isothermal oxidation behavior of the Cu-11.35Al-3.2Ni-3.5Mn (wt.%) shape-memory alloy (SMA) in the temperature range of 500–900°C in oxygen was studied using the thermogravimetric (TG) method. TG curve showed that the alloy has parabolic isothermal oxidation characteristics. The effect of oxidation on the surface morphology and chemical composition of the Cu–Al–Ni–Mn alloy was determined by scanning electron microscopy, energy-dispersive spectroscopy, and X-ray photoelectron spectroscopy (XPS) analyses. The oxidation rate of SMA increases up to 700°C, remains stable at 800°C, and increases again up to 900°C. The XPS analysis identified that the corrosion products mainly contained MnO<sub>2</sub>, MnO/Mn<sub>2</sub>O<sub>3</sub>, and Al<sub>2</sub>O<sub>3</sub>.</p>","PeriodicalId":18225,"journal":{"name":"Materials and Corrosion-werkstoffe Und Korrosion","volume":"75 11","pages":"1429-1437"},"PeriodicalIF":1.6,"publicationDate":"2024-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141743158","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Influence of mechanical grinding on the formation of native passive layers on aluminum alloys 机械研磨对铝合金原生被动层形成的影响
IF 1.6 4区 材料科学
Materials and Corrosion-werkstoffe Und Korrosion Pub Date : 2024-07-16 DOI: 10.1002/maco.202414503
Michael Schneider, Ulrike Langklotz, Laurence Kühne, Claudia Kutzer-Schulze
{"title":"Influence of mechanical grinding on the formation of native passive layers on aluminum alloys","authors":"Michael Schneider,&nbsp;Ulrike Langklotz,&nbsp;Laurence Kühne,&nbsp;Claudia Kutzer-Schulze","doi":"10.1002/maco.202414503","DOIUrl":"10.1002/maco.202414503","url":null,"abstract":"<p>Mechanical grinding creates mechanical as well as thermal stress in treated material and the so-called Beilby layer is formed. The present work investigates the influence of abrasive coarse grain size on the thickness and electrochemical behavior of the native oxide layer formed after the grinding process by using cyclovoltammetry. The difference in the native oxide layer thickness amounts to Δ<i>d</i> ≈ 0.5 nm under the surface conditions investigated. Additionally, an experimental design is introduced and tested, which allows the <i>operando</i> measuring of the temperature of the material during the grinding process. Estimates result in a thermal stress Δ<i>σ</i> between 0.8 and 1.3 MPa depending on the chosen grinding parameters and influence the subsequently formed oxide layer thickness.</p>","PeriodicalId":18225,"journal":{"name":"Materials and Corrosion-werkstoffe Und Korrosion","volume":"76 1","pages":"43-52"},"PeriodicalIF":1.6,"publicationDate":"2024-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/maco.202414503","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141743160","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Accelerated microbiologically influenced corrosion of copper by sulfate-reducing bacterium Desulfovibrio desulfovibrio 受硫酸盐还原菌脱硫弧菌影响的微生物对铜的加速腐蚀
IF 1.6 4区 材料科学
Materials and Corrosion-werkstoffe Und Korrosion Pub Date : 2024-07-16 DOI: 10.1002/maco.202414451
Lijuan Chen, Jialin Li, Bo Wei, Jin Xu, Cheng Sun
{"title":"Accelerated microbiologically influenced corrosion of copper by sulfate-reducing bacterium Desulfovibrio desulfovibrio","authors":"Lijuan Chen,&nbsp;Jialin Li,&nbsp;Bo Wei,&nbsp;Jin Xu,&nbsp;Cheng Sun","doi":"10.1002/maco.202414451","DOIUrl":"10.1002/maco.202414451","url":null,"abstract":"<p>The corrosion behavior and electrochemical damage mechanisms induced by sulfate-reducing bacteria (SRB) on copper (Cu) were investigated in this study. Electrochemical impedance spectroscopy revealed that SRB accelerated the corrosion of Cu, albeit with a mitigating effect observed due to the formation of a protective and dense biofilm. However, upon the rupture of this protective film, the corrosion tendency of Cu significantly increased. Surface analysis corroborated these findings, with the predominant corrosion product identified as Cu2S, a result further supported by thermodynamic calculations. The accelerated corrosion of Cu was primarily attributed to the physiological metabolism of SRB, which generates hydrogen sulfide as the principal agent driving corrosion processes.</p>","PeriodicalId":18225,"journal":{"name":"Materials and Corrosion-werkstoffe Und Korrosion","volume":"75 11","pages":"1495-1505"},"PeriodicalIF":1.6,"publicationDate":"2024-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141743159","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Archeological analogs for the lifetime prediction of the canister for spent nuclear fuel in the deep geological repository: Part II. Evolution of the corrosion rate over time 用于预测深层地质贮存库乏核燃料罐寿命的考古模拟：第二部分.腐蚀率随时间的变化
IF 1.6 4区 材料科学
Materials and Corrosion-werkstoffe Und Korrosion Pub Date : 2024-07-15 DOI: 10.1002/maco.202414521
Saqib Mukhtar, Richard Bureš, Miloslav Lhotka, Alžběta Danielisová, Drahomíra Malyková, Helena Březinová, Ludmila Barčáková, Šárka Šachlová, Vlastislav Kašpar, Václava Havlová, Jiří Němeček, Jan Stoulil
{"title":"Archeological analogs for the lifetime prediction of the canister for spent nuclear fuel in the deep geological repository: Part II. Evolution of the corrosion rate over time","authors":"Saqib Mukhtar,&nbsp;Richard Bureš,&nbsp;Miloslav Lhotka,&nbsp;Alžběta Danielisová,&nbsp;Drahomíra Malyková,&nbsp;Helena Březinová,&nbsp;Ludmila Barčáková,&nbsp;Šárka Šachlová,&nbsp;Vlastislav Kašpar,&nbsp;Václava Havlová,&nbsp;Jiří Němeček,&nbsp;Jan Stoulil","doi":"10.1002/maco.202414521","DOIUrl":"10.1002/maco.202414521","url":null,"abstract":"<p>This work focused on evaluating the evolution of the corrosion product layer and associated corrosion rates on archeological artifacts from 16 sites. Sites with clay soils and maximum waterlogging (pond bottoms and wetlands) were monitored. The corrosion products were evaluated by X-ray imaging, X-ray diffraction, scanning electron microscope, Brunauer–Emmett–Teller, and nanoindentation. Two stages of corrosion attack with slightly different mechanisms were observed. Corrosion rates observed at sites with continuous flooding show average corrosion rates of 0.4–1 μm.a<sup>−1</sup>. These values demonstrate a minimum service life of the container outer case of 15 × 10<sup>3</sup> years, which is several times longer than the required lifetime of the outer case.</p>","PeriodicalId":18225,"journal":{"name":"Materials and Corrosion-werkstoffe Und Korrosion","volume":"76 1","pages":"155-163"},"PeriodicalIF":1.6,"publicationDate":"2024-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141645941","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Contents: Materials and Corrosion. 7/2024 内容：材料与腐蚀。7/2024
IF 1.6 4区 材料科学
Materials and Corrosion-werkstoffe Und Korrosion Pub Date : 2024-07-04 DOI: 10.1002/maco.202470073
{"title":"Contents: Materials and Corrosion. 7/2024","authors":"","doi":"10.1002/maco.202470073","DOIUrl":"https://doi.org/10.1002/maco.202470073","url":null,"abstract":"","PeriodicalId":18225,"journal":{"name":"Materials and Corrosion-werkstoffe Und Korrosion","volume":"75 7","pages":"826-829"},"PeriodicalIF":1.6,"publicationDate":"2024-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/maco.202470073","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141556673","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Cover Picture: Materials and Corrosion. 7/2024 封面图片：材料与腐蚀7/2024
IF 1.6 4区 材料科学
Materials and Corrosion-werkstoffe Und Korrosion Pub Date : 2024-07-04 DOI: 10.1002/maco.202470071
Grzegorz Smola, Richard Gawel, Zbigniew Grzesik
{"title":"Cover Picture: Materials and Corrosion. 7/2024","authors":"Grzegorz Smola,&nbsp;Richard Gawel,&nbsp;Zbigniew Grzesik","doi":"10.1002/maco.202470071","DOIUrl":"https://doi.org/10.1002/maco.202470071","url":null,"abstract":"<p><b>Cover:</b></p><p>A multi-layered microstructure of the sulfide scale formed on Al<sub>20</sub>Co<sub>25</sub>Cr<sub>25</sub>Ni<sub>25</sub>Si<sub>5</sub> high entropy alloy at 900°C and 1 kPa of sulfur partial pressure (a), and corresponding EDS maps of elements distribution in the outer, compact part of the sulfide scale (b).</p><p>More detailed information can be found in: <i>Grzegorz Smola, Richard Gawel, Zbigniew Grzesik</i>, Sulfidation behavior of an AlCoCrNiSi high entropy alloy, <i>Materials and Corrosion</i> <b>2024</b>, <i>75</i>, 830.\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":18225,"journal":{"name":"Materials and Corrosion-werkstoffe Und Korrosion","volume":"75 7","pages":"823"},"PeriodicalIF":1.6,"publicationDate":"2024-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/maco.202470071","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141556671","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Masthead: Materials and Corrosion. 7/2024 刊头：材料与腐蚀7/2024
IF 1.6 4区 材料科学
Materials and Corrosion-werkstoffe Und Korrosion Pub Date : 2024-07-04 DOI: 10.1002/maco.202470072
{"title":"Masthead: Materials and Corrosion. 7/2024","authors":"","doi":"10.1002/maco.202470072","DOIUrl":"https://doi.org/10.1002/maco.202470072","url":null,"abstract":"","PeriodicalId":18225,"journal":{"name":"Materials and Corrosion-werkstoffe Und Korrosion","volume":"75 7","pages":"825"},"PeriodicalIF":1.6,"publicationDate":"2024-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/maco.202470072","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141556672","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
RETRACTION: Fabrication of a superhydrophobic surface on al alloy 5052 via combined anodic oxidation and fluorination treatment 返回：通过阳极氧化和氟化联合处理在合金 5052 上制造超疏水表面
IF 1.6 4区 材料科学
Materials and Corrosion-werkstoffe Und Korrosion Pub Date : 2024-06-28 DOI: 10.1002/maco.202470611
{"title":"RETRACTION: Fabrication of a superhydrophobic surface on al alloy 5052 via combined anodic oxidation and fluorination treatment","authors":"","doi":"10.1002/maco.202470611","DOIUrl":"10.1002/maco.202470611","url":null,"abstract":"<p>RETRACTION: Lkhagvaa Telmenbayar, Tumur-Ochir Erdenebat, Minjung, Daejeong Yang, Ramu Adam Gopal, Dongjin Choi Fabrication of a superhydrophobic surface on Al alloy 5052via combined anodic oxidation and fluorination treatment, published in Materials and Corrosion, DOI 10.1002/maco.202012190. The above article, published online on 03 March 2021 in Wiley Online Library (wileyonlinelibrary.com), has been withdrawn by agreement between the journal JPM Regina Hagen, Author Dongjin Choi, and Wiley-VCH. The withdrawal has been agreed upon following that there was a minor problem with the materials authors used and they plan to resubmit after additional experiments. wileyonlinelibrary.com/journal/maco Materials and Corrosion. 2021;1–9.</p>","PeriodicalId":18225,"journal":{"name":"Materials and Corrosion-werkstoffe Und Korrosion","volume":"75 7","pages":"932"},"PeriodicalIF":1.6,"publicationDate":"2024-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/maco.202470611","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141551814","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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