Mechanism of corrosion protection of hot-dip aluminium–silicon coatings on steel studied by electrochemical depth profiling
•The in-depth electrochemical behaviour of aluminized steel is studied.•The outer free aluminium layer can cathodically protect the steel substrate.•The inner interdiffusion layers cannot cathodically protect the steel substrate.•Potential for cathodic protection depends on type of defect and enviro...
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| Veröffentlicht in: | Corrosion science 2013-11, Vol.76, p.325-336 |
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| creator | De Graeve, Iris Schoukens, Ine Lanzutti, Alex Andreatta, Francesco Alvarez-Pampliega, Ana De Strycker, Joost Fedrizzi, Lorenzo Terryn, Herman |
| description | •The in-depth electrochemical behaviour of aluminized steel is studied.•The outer free aluminium layer can cathodically protect the steel substrate.•The inner interdiffusion layers cannot cathodically protect the steel substrate.•Potential for cathodic protection depends on type of defect and environment.•Galvanic series of the sublayers and Volta potential series show similar trend.
The electrochemical behaviour of hot dip aluminium–silicon coatings on steel is studied in relation to the in-depth structure and composition, determined by SEM/EDX and EBSD. Progressive GDOES sputtering was used for electrochemical analysis using a micro-capillary three-electrode microcell in craters positioned in the various sublayers. Additionally, cross-sections were analyzed with SKPFM. Results show that the outer free aluminium layer of the coating is able to cathodically protect the underlying layers and substrate. Conversely, the interdiffusion layers are nobler than the steel. The galvanic series implies that cathodic protection will depend on the nature of the defect and the corrosion environment. |
| doi_str_mv | 10.1016/j.corsci.2013.07.005 |
| format | Article |
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The electrochemical behaviour of hot dip aluminium–silicon coatings on steel is studied in relation to the in-depth structure and composition, determined by SEM/EDX and EBSD. Progressive GDOES sputtering was used for electrochemical analysis using a micro-capillary three-electrode microcell in craters positioned in the various sublayers. Additionally, cross-sections were analyzed with SKPFM. Results show that the outer free aluminium layer of the coating is able to cathodically protect the underlying layers and substrate. Conversely, the interdiffusion layers are nobler than the steel. The galvanic series implies that cathodic protection will depend on the nature of the defect and the corrosion environment.</description><identifier>ISSN: 0010-938X</identifier><identifier>EISSN: 1879-0496</identifier><identifier>DOI: 10.1016/j.corsci.2013.07.005</identifier><identifier>CODEN: CRRSAA</identifier><language>eng</language><publisher>Kidlington: Elsevier Ltd</publisher><subject>Aluminized steel ; Aluminum ; Applied sciences ; Coatings ; Corrosion ; Corrosion environments ; Corrosion prevention ; Craters ; Depth profiling ; Electrochemical depth-profiling ; Exact sciences and technology ; GDOES ; Hot dip aluminizing ; Interdiffusion ; Metals. Metallurgy ; Micro-capillary cell ; Production techniques ; Protective coatings ; SKPFM ; Structural steels ; Surface treatment</subject><ispartof>Corrosion science, 2013-11, Vol.76, p.325-336</ispartof><rights>2013 Elsevier Ltd</rights><rights>2014 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c369t-a39036e81dbc13c455c289283c65e9f719e964e17fd4cf3fd77fdad0b8e2fd353</citedby><cites>FETCH-LOGICAL-c369t-a39036e81dbc13c455c289283c65e9f719e964e17fd4cf3fd77fdad0b8e2fd353</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0010938X13003004$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27901,27902,65306</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=27720445$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>De Graeve, Iris</creatorcontrib><creatorcontrib>Schoukens, Ine</creatorcontrib><creatorcontrib>Lanzutti, Alex</creatorcontrib><creatorcontrib>Andreatta, Francesco</creatorcontrib><creatorcontrib>Alvarez-Pampliega, Ana</creatorcontrib><creatorcontrib>De Strycker, Joost</creatorcontrib><creatorcontrib>Fedrizzi, Lorenzo</creatorcontrib><creatorcontrib>Terryn, Herman</creatorcontrib><title>Mechanism of corrosion protection of hot-dip aluminium–silicon coatings on steel studied by electrochemical depth profiling</title><title>Corrosion science</title><description>•The in-depth electrochemical behaviour of aluminized steel is studied.•The outer free aluminium layer can cathodically protect the steel substrate.•The inner interdiffusion layers cannot cathodically protect the steel substrate.•Potential for cathodic protection depends on type of defect and environment.•Galvanic series of the sublayers and Volta potential series show similar trend.
The electrochemical behaviour of hot dip aluminium–silicon coatings on steel is studied in relation to the in-depth structure and composition, determined by SEM/EDX and EBSD. Progressive GDOES sputtering was used for electrochemical analysis using a micro-capillary three-electrode microcell in craters positioned in the various sublayers. Additionally, cross-sections were analyzed with SKPFM. Results show that the outer free aluminium layer of the coating is able to cathodically protect the underlying layers and substrate. Conversely, the interdiffusion layers are nobler than the steel. The galvanic series implies that cathodic protection will depend on the nature of the defect and the corrosion environment.</description><subject>Aluminized steel</subject><subject>Aluminum</subject><subject>Applied sciences</subject><subject>Coatings</subject><subject>Corrosion</subject><subject>Corrosion environments</subject><subject>Corrosion prevention</subject><subject>Craters</subject><subject>Depth profiling</subject><subject>Electrochemical depth-profiling</subject><subject>Exact sciences and technology</subject><subject>GDOES</subject><subject>Hot dip aluminizing</subject><subject>Interdiffusion</subject><subject>Metals. Metallurgy</subject><subject>Micro-capillary cell</subject><subject>Production techniques</subject><subject>Protective coatings</subject><subject>SKPFM</subject><subject>Structural steels</subject><subject>Surface treatment</subject><issn>0010-938X</issn><issn>1879-0496</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2013</creationdate><recordtype>article</recordtype><recordid>eNp9kM2KFDEQx4O44Lj6Bh76InjpttLpr1wEWXRXWPGi4C1kKpWdDN2dMekW9iDsO_iGPonVzOLRS1Ik_w_qJ8QrCZUE2b09VhhTxlDVIFUFfQXQPhE7OfS6hEZ3T8UOQEKp1fD9mXie8xEAWAs78esz4cHOIU9F9AXHpJhDnItTigvhso38fohL6cKpsOM6hTms05-H3zmMAfkbo13CfJcLnvNCNPK5ukCu2N8XNHJIinigKaAdC0en5bCFe3bPdy_EhbdjppeP96X49vHD16ub8vbL9aer97clqk4vpVUaVEeDdHuUCpu2xXrQ9aCwa0n7XmrSXUOy965Br7zrebIO9gPV3qlWXYo351xu_rFSXswUMtI42pnimo1s-rZtGaVkaXOWIpPIibw5pTDZdG8kmI22OZozbbPRNtAbps22148NNvOiPtkZQ_7nrfu-hqbZdO_OOuJ1fwZKhpNoRnIhMSrjYvh_0V_6c5vk</recordid><startdate>20131101</startdate><enddate>20131101</enddate><creator>De Graeve, Iris</creator><creator>Schoukens, Ine</creator><creator>Lanzutti, Alex</creator><creator>Andreatta, Francesco</creator><creator>Alvarez-Pampliega, Ana</creator><creator>De Strycker, Joost</creator><creator>Fedrizzi, Lorenzo</creator><creator>Terryn, Herman</creator><general>Elsevier Ltd</general><general>Elsevier</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QF</scope><scope>7SE</scope><scope>8BQ</scope><scope>8FD</scope><scope>F28</scope><scope>FR3</scope><scope>JG9</scope></search><sort><creationdate>20131101</creationdate><title>Mechanism of corrosion protection of hot-dip aluminium–silicon coatings on steel studied by electrochemical depth profiling</title><author>De Graeve, Iris ; Schoukens, Ine ; Lanzutti, Alex ; Andreatta, Francesco ; Alvarez-Pampliega, Ana ; De Strycker, Joost ; Fedrizzi, Lorenzo ; Terryn, Herman</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c369t-a39036e81dbc13c455c289283c65e9f719e964e17fd4cf3fd77fdad0b8e2fd353</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2013</creationdate><topic>Aluminized steel</topic><topic>Aluminum</topic><topic>Applied sciences</topic><topic>Coatings</topic><topic>Corrosion</topic><topic>Corrosion environments</topic><topic>Corrosion prevention</topic><topic>Craters</topic><topic>Depth profiling</topic><topic>Electrochemical depth-profiling</topic><topic>Exact sciences and technology</topic><topic>GDOES</topic><topic>Hot dip aluminizing</topic><topic>Interdiffusion</topic><topic>Metals. Metallurgy</topic><topic>Micro-capillary cell</topic><topic>Production techniques</topic><topic>Protective coatings</topic><topic>SKPFM</topic><topic>Structural steels</topic><topic>Surface treatment</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>De Graeve, Iris</creatorcontrib><creatorcontrib>Schoukens, Ine</creatorcontrib><creatorcontrib>Lanzutti, Alex</creatorcontrib><creatorcontrib>Andreatta, Francesco</creatorcontrib><creatorcontrib>Alvarez-Pampliega, Ana</creatorcontrib><creatorcontrib>De Strycker, Joost</creatorcontrib><creatorcontrib>Fedrizzi, Lorenzo</creatorcontrib><creatorcontrib>Terryn, Herman</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Aluminium Industry Abstracts</collection><collection>Corrosion Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>ANTE: Abstracts in New Technology & Engineering</collection><collection>Engineering Research Database</collection><collection>Materials Research Database</collection><jtitle>Corrosion science</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>De Graeve, Iris</au><au>Schoukens, Ine</au><au>Lanzutti, Alex</au><au>Andreatta, Francesco</au><au>Alvarez-Pampliega, Ana</au><au>De Strycker, Joost</au><au>Fedrizzi, Lorenzo</au><au>Terryn, Herman</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Mechanism of corrosion protection of hot-dip aluminium–silicon coatings on steel studied by electrochemical depth profiling</atitle><jtitle>Corrosion science</jtitle><date>2013-11-01</date><risdate>2013</risdate><volume>76</volume><spage>325</spage><epage>336</epage><pages>325-336</pages><issn>0010-938X</issn><eissn>1879-0496</eissn><coden>CRRSAA</coden><abstract>•The in-depth electrochemical behaviour of aluminized steel is studied.•The outer free aluminium layer can cathodically protect the steel substrate.•The inner interdiffusion layers cannot cathodically protect the steel substrate.•Potential for cathodic protection depends on type of defect and environment.•Galvanic series of the sublayers and Volta potential series show similar trend.
The electrochemical behaviour of hot dip aluminium–silicon coatings on steel is studied in relation to the in-depth structure and composition, determined by SEM/EDX and EBSD. Progressive GDOES sputtering was used for electrochemical analysis using a micro-capillary three-electrode microcell in craters positioned in the various sublayers. Additionally, cross-sections were analyzed with SKPFM. Results show that the outer free aluminium layer of the coating is able to cathodically protect the underlying layers and substrate. Conversely, the interdiffusion layers are nobler than the steel. The galvanic series implies that cathodic protection will depend on the nature of the defect and the corrosion environment.</abstract><cop>Kidlington</cop><pub>Elsevier Ltd</pub><doi>10.1016/j.corsci.2013.07.005</doi><tpages>12</tpages></addata></record> |
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| source | Elsevier ScienceDirect Journals |
| subjects | Aluminized steel Aluminum Applied sciences Coatings Corrosion Corrosion environments Corrosion prevention Craters Depth profiling Electrochemical depth-profiling Exact sciences and technology GDOES Hot dip aluminizing Interdiffusion Metals. Metallurgy Micro-capillary cell Production techniques Protective coatings SKPFM Structural steels Surface treatment |
| title | Mechanism of corrosion protection of hot-dip aluminium–silicon coatings on steel studied by electrochemical depth profiling |
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