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Corrosion induced metal release from copper based alloys compared to their pure elements
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Corrosion Science.
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Corrosion Science.ORCID iD: 0000-0003-2206-0082
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Corrosion Science.ORCID iD: 0000-0002-2123-2201
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Corrosion Science.ORCID iD: 0000-0002-9453-1333
2008 (English)In: Corrosion Engineering, Science and Technology, ISSN 1478-422X, E-ISSN 1743-2782, Vol. 43, no 2, 134-141 p.Article in journal (Refereed) Published
Abstract [en]

Despite numerous studies on atmospheric corrosion of copper and copper based alloys, the corrosion induced release processes of individual alloy constituents suffer from significant knowledge gaps. This investigation comprises metal release rate measurements of copper, zinc and tin from some copper based alloys including brass (20 wt-% Zn) and bronze (6 wt-% Sn), and their pure alloying metals, copper, zinc and tin. Data have been generated during a 2.5 year urban field exposure in Stockholm, Sweden and parallel laboratory investigations in a specially designed rain chamber using artificial rain. Brass shows significantly lower annual release rates of both copper and zinc compared to pure metal sheets of its alloy constituents. Zinc is preferentially released compared to copper. Dezincification of brass occurs both at field and laboratory conditions, a process influenced by rain characteristics. Alloying with tin does not largely reduce the release rate of copper from bronze compared to pure copper. No measurable amount of tin is released from the bronze surface.

Place, publisher, year, edition, pages
2008. Vol. 43, no 2, 134-141 p.
Keyword [en]
atmospheric corrosion, metal release, copper, zinc, brass, bronze
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:kth:diva-38095DOI: 10.1179/174327808X286383ISI: 000257881900007OAI: oai:DiVA.org:kth-38095DiVA: diva2:436415
Note
14th Nordic Corrosion Congress Location: Copenhagen, DENMARK Date: MAY 13-15, 2007Available from: 2011-08-23 Created: 2011-08-22 Last updated: 2017-12-08Bibliographically approved

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Wallinder, Inger OdnevallHerting, GunillaLeygraf, Christofer

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