Materials and Corrosion-werkstoffe Und Korrosion最新文献

{"title":"Atmospheric corrosion of AISI-1020 carbon steel in a very aggressive coastal zone of Havana, Cuba. Determination of corrosivity category using three ways of assessment","authors":"Abel Castañeda, Cecilia Valdés, Francisco Corvo, Ildefonso Pech, Rigoberto Marrero","doi":"10.1002/maco.202414380","DOIUrl":"10.1002/maco.202414380","url":null,"abstract":"<p>The Cuban coastal line is reported to be one of the most aggressive in the world. Three ways to estimate corrosivity category of the atmosphere were considered. The influence of meteorological parameters on chloride deposition rate <span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 \u0000 <mrow>\u0000 <mo>(</mo>\u0000 \u0000 <msub>\u0000 <mi>S</mi>\u0000 \u0000 <mi>d</mi>\u0000 </msub>\u0000 \u0000 <mo>)</mo>\u0000 </mrow>\u0000 </mrow>\u0000 <annotation> $({S}_{d})$</annotation>\u0000 </semantics></math> in saline solution form was considered as a first way. Corrosion rate <span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 \u0000 <mrow>\u0000 <mo>(</mo>\u0000 \u0000 <msub>\u0000 <mi>r</mi>\u0000 \u0000 <mtext>corr</mtext>\u0000 </msub>\u0000 \u0000 <mo>)</mo>\u0000 </mrow>\u0000 </mrow>\u0000 <annotation> $({r}_{text{corr}})$</annotation>\u0000 </semantics></math> calculated by dose response function is considered a second way. It was confirmed that atmospheric corrosion of AISI-1020 carbon steel is influenced by <span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 \u0000 <mrow>\u0000 <msub>\u0000 <mi>S</mi>\u0000 \u0000 <mi>d</mi>\u0000 </msub>\u0000 </mrow>\u0000 </mrow>\u0000 <annotation> ${S}_{d}$</annotation>\u0000 </semantics></math> and <span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 \u0000 <mrow>\u0000 <msub>\u0000 <mi>P</mi>\u0000 \u0000 <mi>d</mi>\u0000 </msub>\u0000 </mrow>\u0000 </mrow>\u0000 <annotation> ${P}_{d}$</annotation>\u0000 </semantics></math> in salt solution form. A critical <span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 \u0000 <mrow>\u0000 <msub>\u0000 <mi>S</mi>\u0000 \u0000 <mi>d</mi>\u0000 </msub>\u0000 </mrow>\u0000 </mrow>\u0000 <annotation> ${S}_{d}$</annotation>\u0000 </semantics></math> level from which <span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 \u0000 <mrow>\u0000 <msub>\u0000 <mi>r</mi>\u0000 \u0000 <mtext>corr</mtext>\u0000 </msub>\u0000 ","PeriodicalId":18225,"journal":{"name":"Materials and Corrosion-werkstoffe Und Korrosion","volume":"75 11","pages":"1549-1564"},"PeriodicalIF":1.6,"publicationDate":"2024-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141364942","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}

{"title":"Corrosion of some metallic materials embedded in gypsum","authors":"Gustavo Duffó,&nbsp;Jhon Torres-Ramirez,&nbsp;Silvia Fernandez,&nbsp;Silvia Farina","doi":"10.1002/maco.202414483","DOIUrl":"10.1002/maco.202414483","url":null,"abstract":"<p>In the construction area, as well as in the restoration of old and historical buildings, different metallic materials are frequently in contact with gypsum plaster. Due to the high porosity of gypsum plaster, and particularly in high relative humidity environments, the risk of corrosion exists. In the present work, carbon, galvanized and stainless steel, as well as copper, were embedded in gypsum plaster (with varying water/gypsum ratios) and exposed to different environmental conditions, and the corrosion rate was assessed by electrochemical techniques. Stainless steel showed very low corrosion rates, carbon and galvanized steel showed considerable corrosion rates, and copper showed moderate corrosion rates. The higher the humidity, the higher the corrosion rate, independently of the water/gypsum ratio. A comparison with results obtained for the same materials embedded in mortar was performed. Except for stainless steel, the corrosion rates obtained in gypsum are higher than those obtained in mortar, being this difference up to two orders of magnitude. The differences in the pH of both matrices explained the lower corrosion rates measured in mortar.</p>","PeriodicalId":18225,"journal":{"name":"Materials and Corrosion-werkstoffe Und Korrosion","volume":"75 11","pages":"1519-1527"},"PeriodicalIF":1.6,"publicationDate":"2024-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141367354","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}

{"title":"Contents: Materials and Corrosion. 6/2024","authors":"","doi":"10.1002/maco.202470063","DOIUrl":"https://doi.org/10.1002/maco.202470063","url":null,"abstract":"","PeriodicalId":18225,"journal":{"name":"Materials and Corrosion-werkstoffe Und Korrosion","volume":"75 6","pages":"690-693"},"PeriodicalIF":1.8,"publicationDate":"2024-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/maco.202470063","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141245939","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}

{"title":"Masthead: Materials and Corrosion. 6/2024","authors":"","doi":"10.1002/maco.202470062","DOIUrl":"https://doi.org/10.1002/maco.202470062","url":null,"abstract":"","PeriodicalId":18225,"journal":{"name":"Materials and Corrosion-werkstoffe Und Korrosion","volume":"75 6","pages":"689"},"PeriodicalIF":1.8,"publicationDate":"2024-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/maco.202470062","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141245991","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}

{"title":"Cover Picture: Materials and Corrosion. 6/2024","authors":"Dominique Thierry,&nbsp;Dan Persson,&nbsp;Nathalie LeBozec","doi":"10.1002/maco.202470061","DOIUrl":"https://doi.org/10.1002/maco.202470061","url":null,"abstract":"<p><b>Cover:</b></p><p>SEM-EDS elemental images of cross section of AZ185 after 6 years exposure in Brest.</p><p>More detailed information can be found in: <i>Dominique Thierry, Dan Persson and Nathalie LeBozec</i>, Long Term Atmospheric Corrosion Rates of Zn55Al Coated Steel, <i>Materials and Corrosion</i> <b>2024</b>, <i>75</i>, 694.\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 6","pages":"687"},"PeriodicalIF":1.8,"publicationDate":"2024-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/maco.202470061","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141245990","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}

{"title":"Hot corrosion behavior of Mo–9.0Si–8.0B","authors":"Katharina Beck,&nbsp;Till König,&nbsp;Abigail Case,&nbsp;Ceyhun Oskay,&nbsp;Mathias C. Galetz","doi":"10.1002/maco.202414347","DOIUrl":"10.1002/maco.202414347","url":null,"abstract":"<p>In recent years, interest in Mo-based alloys has increased significantly due to their promising high-temperature behavior and their possible uses for industrial high-temperature applications such as within turbines. An important corrosion mechanism in turbines is the sulfate salt-induced attack of the structural materials, known as hot corrosion. Therefore, the Type I and II hot corrosion behavior of Mo–9.0Si–8.0B was investigated at 700°C and 900°C for 24 and 100 h. The Mo-based alloy showed severe degradation, but not by sulfates. Thus, the underlying hot corrosion mechanism through molybdate fluxing, which is accompanied by Mo oxide evaporation, is discussed in detail. At the higher temperature, the MoO₃ evaporation becomes predominant, leaving behind a Si-glass with molybdate inclusions.</p>","PeriodicalId":18225,"journal":{"name":"Materials and Corrosion-werkstoffe Und Korrosion","volume":"75 12","pages":"1600-1609"},"PeriodicalIF":1.6,"publicationDate":"2024-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/maco.202414347","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141172302","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}

{"title":"Effect of DBSA-doped PANI on the corrosion protection performance of GO/epoxy coatings","authors":"Xiaoling Liu,&nbsp;Yingjun Zhang,&nbsp;Chao Shi,&nbsp;Baojie Dou,&nbsp;Mingshun Liu","doi":"10.1002/maco.202414308","DOIUrl":"10.1002/maco.202414308","url":null,"abstract":"<p>In this study, the anticorrosion effect of polyaniline doped with dodecyl benzene sulfonic acid (PANI-DBSA) in graphene oxide (GO)/epoxy coating is investigated. PANI-DBSA is effectively synthesized on the surface of GO via chemical polymerization, and its properties are investigated via a series of characterization methods. The PANI-DBSA/GO hybrid exhibits improved compatibility with organic resin. The anticorrosion performance of PANI-DBSA/GO coatings is assessed through water absorption tests, electrochemical impedance spectroscopy measurements, and adhesion strength tests. The results indicate that PANI reduces the water absorption of GO, and the favorable compatibility of PANI-DBSA/GO with epoxy resin minimizes coating defects and enhances the interfacial blocking for diffusion electrolytes. In this work, the PANI has no active function such as passivating the metal surface, it just serves to shield the hydrophilic GO surface and to improve compatibility between GO and the epoxy, attributing its low pigment content.</p>","PeriodicalId":18225,"journal":{"name":"Materials and Corrosion-werkstoffe Und Korrosion","volume":"75 10","pages":"1331-1347"},"PeriodicalIF":1.6,"publicationDate":"2024-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141059763","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}

{"title":"Corrosion performance of different alloys exposed to HTL conditions—A screening study","authors":"Daniel Blücher,&nbsp;Torstein Lange,&nbsp;Judit Sandquist,&nbsp;Inge Saanum,&nbsp;Mikko Uusitalo","doi":"10.1002/maco.202414415","DOIUrl":"10.1002/maco.202414415","url":null,"abstract":"<p>The corrosion and material evaluation study in (a) water-based simulated black liquor and (b) water-based simulated black liquor at super-critical conditions was successful. The conclusion from the testing program was that the most resistant alloy for the defined conditions is the chromium-rich carbon steel candidate P91 (UNS K91560). This is a type of creep strength-enhanced ferritic alloy, which is steel designed to retain strength at high temperatures. The P91 abbreviation represents the material's chemical composition, that is, 9 wt% chromium (Cr) and 1 wt% molybdenum (Mo). Further work is required to conclude the corrosion resistance for the P91 quality at supercritical conditions in the welded condition and to better understand caustic corrosion mechanisms.</p>","PeriodicalId":18225,"journal":{"name":"Materials and Corrosion-werkstoffe Und Korrosion","volume":"75 10","pages":"1258-1271"},"PeriodicalIF":1.6,"publicationDate":"2024-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/maco.202414415","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141059796","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}

{"title":"High-temperature KCl-induced corrosion of high Cr and Ni alloys investigated by in-situ diffraction","authors":"Phillip Kingsbery,&nbsp;Anna M. Manzoni,&nbsp;P. Suarez Ocaño,&nbsp;D. M. Többens,&nbsp;C. Stephan-Scherb","doi":"10.1002/maco.202314224","DOIUrl":"10.1002/maco.202314224","url":null,"abstract":"<p>High-temperature KCl-induced corrosion in laboratory air was observed in situ utilizing X-ray diffraction. High Cr-containing model alloys (Fe-13Cr, Fe-18Cr-12Ni, and Fe-25Cr-20Ni) were coated with KCl and exposed to dry air at 560°C. KCl-free alloys were studied in the equivalent atmosphere as a reference. After exposure to KCl-free environments, all alloys showed the formation of very thin oxide layers, indicating good corrosion resistance. In contrast, KCl-bearing alloys showed distinct damage after exposure.</p>","PeriodicalId":18225,"journal":{"name":"Materials and Corrosion-werkstoffe Und Korrosion","volume":"75 10","pages":"1272-1281"},"PeriodicalIF":1.6,"publicationDate":"2024-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/maco.202314224","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141059861","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}

{"title":"Patina formation and diffuse dispersion of alloying metals from weathering steels at urban atmospheric conditions—A combined laboratory and field investigation","authors":"Gunilla Herting,&nbsp;Esa Virolainen,&nbsp;Inger Odnevall","doi":"10.1002/maco.202414430","DOIUrl":"10.1002/maco.202414430","url":null,"abstract":"<p>The increasing use of weathering steels (WS) has raised concerns regarding the diffuse emission of alloying elements. This research paper investigates the release of iron (Fe) and the alloying elements (Cr), copper (Cu), manganese (Mn) and nickel (Ni) from two commercially available WS at urban field conditions in Stockholm, Sweden, during 1 year and in the laboratory at simulated urban conditions. The amount of released metals is evaluated and compared with recommended levels of metals in drinking water and the formation and evolution of the protective patina is studied in parallel to assess the influence on the metal release process. Only minor amounts of the alloying elements are released and is only linked to the outermost surface composition of the patina during the very beginning of the exposure. The released amounts are found to be lower compared with the corresponding levels recommended by the World Health Organisation for drinking water.</p>","PeriodicalId":18225,"journal":{"name":"Materials and Corrosion-werkstoffe Und Korrosion","volume":"75 10","pages":"1282-1296"},"PeriodicalIF":1.6,"publicationDate":"2024-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/maco.202414430","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141059811","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}