Materials and Corrosion最新文献_第4页

Effect of WC content on microstructure and properties of CrFeMoNiTi(WC)x high‐entropy alloys composite coatings prepared by selective laser melting WC含量对选择性激光熔化制备CrFeMoNiTi(WC)x高熵合金复合涂层组织和性能的影响

Materials and Corrosion Pub Date : 2022-05-31 DOI: 10.1002/maco.202213228

Desheng Li, Ke Chen, X. Fu, Zixuan Hua

{"title":"Effect of WC content on microstructure and properties of CrFeMoNiTi(WC)x high‐entropy alloys composite coatings prepared by selective laser melting","authors":"Desheng Li, Ke Chen, X. Fu, Zixuan Hua","doi":"10.1002/maco.202213228","DOIUrl":"https://doi.org/10.1002/maco.202213228","url":null,"abstract":"To improve the surface properties of Q235 carbon steels, CrFeMoNiTi(WC)x high‐entropy alloy composite coatings were fabricated via selective laser melting. The microstructure, wear resistance, and corrosion resistance of the composite coatings were studied. Spherical or near‐spherical tungsten carbide (WC) particles are dispersively distributed in the coatings, resulting in the appearance of obvious WC and TiW2C phases. And the composite coatings mainly consist of body‐centered cubic (BCC) and face‐centered cubic (FCC). When x ≤ 0.3, the addition of WC enhances the BCC diffraction peak. Microhardness of the composite coatings with WC increases and is much higher than that of the substrate (280.6 HV0.1). The hardness of the CrFeMoNiTi(WC)0.3 (1005.1 HV0.1) is the highest among the composite coatings. The retained WC particles and BCC acted as load bearers during the friction process, which reduces the wear loss of the composite coating. Also, the anodic protection caused by the corrosion‐resistant WC particles and BCC greatly improves the ability of the composite coatings to resist NaCl attack. Hence, CrFeMoNiTi(WC)0.3 exhibited the optimum wear resistance and corrosion resistance.","PeriodicalId":18223,"journal":{"name":"Materials and Corrosion","volume":"93 1","pages":"1676 - 1686"},"PeriodicalIF":0.0,"publicationDate":"2022-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73929163","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}

引用次数: 1

Corrosion protection of Zn–Al–Mg‐coated steel by a layered double hydroxide conversion layer 双层氢氧化物转化层对Zn-Al-Mg涂层钢的防腐作用

Materials and Corrosion Pub Date : 2022-05-31 DOI: 10.1002/maco.202213097

Tobias Holzner, G. Luckeneder, B. Strauß, M. Valtiner

{"title":"Corrosion protection of Zn–Al–Mg‐coated steel by a layered double hydroxide conversion layer","authors":"Tobias Holzner, G. Luckeneder, B. Strauß, M. Valtiner","doi":"10.1002/maco.202213097","DOIUrl":"https://doi.org/10.1002/maco.202213097","url":null,"abstract":"Conversion layers produced on an industrial scale are typically based on phosphates or chromates and involve toxicological and environmental problematic treatment solutions and waste. Concerning this matter, layered double hydroxide (LDH)‐based conversion layers prepared by the process described in our study offer a promising alternative where the treatment solution comes with no environmental or toxicological concerns. The corrosion protection of Zn–Al–Mg (ZM)‐coated steel by an in situ grown LDH conversion layer is investigated by potentiodynamic polarization measurements, linear polarization resistance determination, neutral salt spray test and mass loss test. An LDH layer formation time as short as 30 s considerably improves the corrosion resistance of ZM‐coated steel in electrochemical testing as well as in industrially relevant corrosion testing under chloride‐containing atmospheres. With prolonged LDH formation times, further improvement in corrosion protection is obtained. The significantly increased corrosion resistance of ZM‐coated steel after the industrially feasible treatment time of 30 s makes LDH‐based conversion layers a promising candidate for novel industrially viable conversion layers, with enhanced corrosion performance and environmentally benign as well as sustainable chemistry.","PeriodicalId":18223,"journal":{"name":"Materials and Corrosion","volume":"3 1","pages":"1657 - 1665"},"PeriodicalIF":0.0,"publicationDate":"2022-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88527946","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}

引用次数: 2

Influence of corrosion behavior of X80 steel in silty soil containing composite sodium salt based on orthogonal test 基于正交试验的X80钢在含复合钠盐粉质土中腐蚀行为的影响

Materials and Corrosion Pub Date : 2022-05-05 DOI: 10.1002/maco.202213150

Yuting Wang, P. Han, Funan Sun, Ruizhen Xie, X. Bai, B. He, Xiaoyuan Wang

{"title":"Influence of corrosion behavior of X80 steel in silty soil containing composite sodium salt based on orthogonal test","authors":"Yuting Wang, P. Han, Funan Sun, Ruizhen Xie, X. Bai, B. He, Xiaoyuan Wang","doi":"10.1002/maco.202213150","DOIUrl":"https://doi.org/10.1002/maco.202213150","url":null,"abstract":"The corrosion law of X80 steel in silty soils with different contents of sodium chloride and sodium sulfate is studied at different temperatures by using an orthogonal test group of three factors and three levels L9 (34) in conjunction with the results of electrochemical impedance spectroscopy, polarization curve, and microscopic images. The steel corrosion rate increases with the silty soil temperature. The presence of SO42− in silty soil inhibits corrosion in X80 steel. The corrosion mechanism involves competition between Cl− and SO42− for adsorption sites: SO42− ions occupy some corrosion pits, and FeS and other corrosion products are generated and adhere to the surface of the corrosion pits, inhibiting further reaction. A range analysis of the fitted electrochemical impedance spectra and polarization curves of X80 steel shows that the temperature has the strongest effect on the corrosion of X80 steel, followed by the Cl− content, whereas the SO42− content has the least effect. The lowest corrosion rate is found for a silty soil Cl− content of 0.3%, a SO42− content of 2.0%, and a temperature of −20°C.","PeriodicalId":18223,"journal":{"name":"Materials and Corrosion","volume":"55 1","pages":"1644 - 1656"},"PeriodicalIF":0.0,"publicationDate":"2022-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75208208","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}

引用次数: 0

Understanding the role of Ti addition on the corrosion and passive film characteristics of Nb stabilized AISI 347 weld 了解Ti对Nb稳定AISI 347焊缝腐蚀及钝化膜特性的影响

Materials and Corrosion Pub Date : 2022-05-04 DOI: 10.1002/maco.202213158

Dikshant Malhotra, A. S. Shahi

{"title":"Understanding the role of Ti addition on the corrosion and passive film characteristics of Nb stabilized AISI 347 weld","authors":"Dikshant Malhotra, A. S. Shahi","doi":"10.1002/maco.202213158","DOIUrl":"https://doi.org/10.1002/maco.202213158","url":null,"abstract":"A multipass multilayer weld pad was fabricated on AISI 347 base metal with filler combinations of AISI 321 and AISI 347, to understand the role of Ti addition on metallurgical, corrosion, and passive film characteristics of the AISI 347 weld. Weld layers with Nb content of 0.53 wt.%, 0.47 wt.%, 0.23 wt.% and Ti of 0 wt.%, 0.21 wt.%, 0.33 wt.%, respectively, were extracted from fabricated weld pad. Selected weld metal compositions were subjected to thermal aging at 750°C for 24 h to investigate the influence of varying precipitation induced in these welds. Ti addition in AISI 347 weld showed lower enrichment of C and Cr at dendritic regions resulting in reduced Cr depletion, lower sensitization, enhanced pitting potential, and repassivation ability compared to conventional Nb stabilized AISI 347 weld. Passive film characteristics studied by electrochemical impedance spectroscopy and X‐ray photoelectron spectroscopy depicted formation of more protective, and dense passive film with higher Cr, Ni, and O concentrations for Ti added AISI 347 weld relative to conventional ones. Therefore, Ti addition via the use of Ti stabilized filler in the Nb stabilized AISI 347 weld proved to be efficient in enhancing its corrosion performance by forming a more protective passive oxide film.","PeriodicalId":18223,"journal":{"name":"Materials and Corrosion","volume":"39 1","pages":"1701 - 1716"},"PeriodicalIF":0.0,"publicationDate":"2022-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90149348","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}

引用次数: 2

Corrosion performance of powder‐coated aluminum profiles with increased trace element content 随着微量元素含量的增加，粉末涂层铝型材的腐蚀性能

Materials and Corrosion Pub Date : 2022-05-04 DOI: 10.1002/maco.202213173

Alexander Lutz, Malgorzata Chojak Halseid, I. De Graeve

引用次数: 2

Long‐term low‐temperature hot corrosion of PTA welded René 41 superalloy under marine‐like conditions 类似海洋条件下PTA焊接ren<s:1> 41高温合金的长期低温热腐蚀

Materials and Corrosion Pub Date : 2022-05-03 DOI: 10.1002/maco.202213053

Christian Hempel, M. Mandel, C. Schimpf, L. Krüger

引用次数: 0

Dynamic and localized microelectrochemical approaches to evaluate the corrosion resistance of newly developed lean duplex stainless steel alloys 动态和局部微电化学方法评价新开发的贫双相不锈钢合金的耐蚀性

Materials and Corrosion Pub Date : 2022-05-03 DOI: 10.1002/maco.202213174

Arumugam Madhan Kumar, I. Toor

{"title":"Dynamic and localized microelectrochemical approaches to evaluate the corrosion resistance of newly developed lean duplex stainless steel alloys","authors":"Arumugam Madhan Kumar, I. Toor","doi":"10.1002/maco.202213174","DOIUrl":"https://doi.org/10.1002/maco.202213174","url":null,"abstract":"A combination of scanning microelectrochemical techniques along with the conventional electrochemical approaches is explored to attain insight information on the localized corrosion on the newly developed lean duplex stainless steel (LDSS) alloys. The obtained results from dynamic electrochemical impedance spectroscopic (DEIS) tests explained the beneficial role of different alloying elements on the passive and transpassive regions of the investigated LDSS alloys in a 3.5% NaCl solution. The scanning vibrating electrode technique (SVET) was effective in examining the anodic and cathodic regions on the corroding LDSS, whereas the scanning electrochemical microscopy (SECM) technique was employed to explore the localized corrosion sites on LDSS in NaCl solution. The acquired SVET results revealed a reduction in the susceptibility of the newly developed alloys to localized corrosion concerning their composition, accounting for the enhanced corrosion resistance. The obtained result from conventional and scanning microelectrochemical techniques obviously revealed the LDSS alloy with the composition of Fe–16Cr–2Ni–2Mn–1Mo exhibited higher localized corrosion resistance in NaCl solution.","PeriodicalId":18223,"journal":{"name":"Materials and Corrosion","volume":"14 1","pages":"1687 - 1700"},"PeriodicalIF":0.0,"publicationDate":"2022-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90666169","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}

引用次数: 2

Effect of preaging temperature on microstructure evolution, mechanical and corrosion behavior of RRA‐treated high‐zinc 7068 alloy 预温对RRA处理高锌7068合金组织演变、力学和腐蚀行为的影响

Materials and Corrosion Pub Date : 2022-05-03 DOI: 10.1002/maco.202213196

Ankur Kumar, G. Chaudhari, S. Nath

{"title":"Effect of preaging temperature on microstructure evolution, mechanical and corrosion behavior of RRA‐treated high‐zinc 7068 alloy","authors":"Ankur Kumar, G. Chaudhari, S. Nath","doi":"10.1002/maco.202213196","DOIUrl":"https://doi.org/10.1002/maco.202213196","url":null,"abstract":"Mechanical and corrosion behavior of high‐strength, high‐zinc (>7 wt%) containing 7068 aluminum alloy is investigated after employing different retrogression and reaging (RRA) treatments. The effect of preaging conditions on the distribution of copper, zinc, and magnesium, the volume fraction of η′ phase, and the width of precipitate free zones (PFZ) have been investigated. Microstructural and compositional features characterized by scanning electron microscope‐energy dispersive spectroscopy, scanning transmission electron microscope, and differential scanning calorimetry are correlated with hardness and corrosion performance. The localized attack is manifested in the dissolution of second phase precipitates which occurs from selective leaching of magnesium and aluminum. A combination of two opposite effects, that is, the presence of nobler, high‐copper grain boundary precipitates and microgalvanic effect of PFZ along with the distribution of alloying elements, that is, Cu, Zn, and Mg govern the electrochemical behavior of RRA‐treated 7068 alloy. Optimum preaging and RRA conditions are identified for this high‐zinc 7xxx series alloy.","PeriodicalId":18223,"journal":{"name":"Materials and Corrosion","volume":"6 1","pages":"1586 - 1603"},"PeriodicalIF":0.0,"publicationDate":"2022-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87516644","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}

引用次数: 2

Tannic acid‐copper metal‐organic frameworks decorated graphene oxide for reinforcement of the corrosion protection of waterborne epoxy coatings 单宁酸-铜金属-有机框架装饰氧化石墨烯，用于增强水性环氧涂料的防腐性能

Materials and Corrosion Pub Date : 2022-05-02 DOI: 10.1002/maco.202213189

Li Cheng, Peimin Hou, Chengbao Liu

{"title":"Tannic acid‐copper metal‐organic frameworks decorated graphene oxide for reinforcement of the corrosion protection of waterborne epoxy coatings","authors":"Li Cheng, Peimin Hou, Chengbao Liu","doi":"10.1002/maco.202213189","DOIUrl":"https://doi.org/10.1002/maco.202213189","url":null,"abstract":"Waterborne anticorrosion coatings have aroused tremendous attention in the metal protection field due to their environmentally friendly properties. However, the limited barrier performance and poor resistance to corrosive species severely impede its practical applications. Herein, tannic acid‐copper metal‐organic framework (TA‐Cu) was first synthesized via oxidative coordination and then assembled with graphene oxide to obtain TA‐Cu‐decorated graphene oxide (TAG), which was utilized to improve the anticorrosion performance of waterborne epoxy (WEP) coatings. Electrochemical measurements demonstrated that the impermeability of WEP has been significantly enhanced with the incorporation of TAG. Meanwhile, local electrochemical impedance spectroscopy tests indicated that the corrosion reaction at defected region can be effectively suppressed, presenting an active anticorrosion function. The protection mechanisms are attributed to (1) TA‐Cu contributed to the dispersion of graphene oxide in WEP and impeded the intrusion of aggressive ions and (2) the coordination and adsorption of TA on steel inhibited the redox process and corrosion extension.","PeriodicalId":18223,"journal":{"name":"Materials and Corrosion","volume":"13 1","pages":"1666 - 1675"},"PeriodicalIF":0.0,"publicationDate":"2022-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74586398","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}

引用次数: 2

Masthead: Materials and Corrosion. 5/2022 报头:材料与腐蚀。5/2022

Materials and Corrosion Pub Date : 2022-05-01 DOI: 10.1002/maco.202270052

引用次数: 0