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The role of Sn on the long-term atmospheric corrosion of binary Cu-Sn bronze alloys in architecture
KTH Royal Institute of Technology, Sweden; University of Science and Technology Beijing, China.
KTH Royal Institute of Technology, Sweden.
Politecnico di Milano, Italy.
Avenida Universidad de Cadiz, Spain.
Show others and affiliations
2019 (English)In: Corrosion Science, ISSN 0010-938X, E-ISSN 1879-0496, Vol. 149, p. 54-67Article in journal (Refereed) Published
Abstract [en]

The role of Sn on the atmospheric corrosion performance of binary Cu-Sn bronze alloys (4–6 wt.% Sn) compared with Cu metal used in outdoor architecture is elucidated in terms of microstructure, native surface oxide composition, patina evolution, corrosion rates, appearance and metal release. Results are presented for non-exposed surfaces and surfaces exposed at different urban and marine sites in Europe up to 5 years and based on multi-analytical findings from microscopic, spectroscopic, electrochemical and chemical investigations. Alloying influenced the corrosion, aesthetic appearance and patina evolution, differently for urban and marine sites, whereas no effects were observed on the release pattern. © 2019 The Authors

Place, publisher, year, edition, pages
Elsevier Ltd , 2019. Vol. 149, p. 54-67
Keywords [en]
Aesthetic appearance, Atmospheric corrosion, Bronze, Metal release, Patina, Atmospheric chemistry, Binary alloys, Chemical analysis, Corrosion rate, Seawater corrosion, Urban growth, Exposed surfaces, Release pattern, Surface oxide, Copper corrosion
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-40463DOI: 10.1016/j.corsci.2019.01.002Scopus ID: 2-s2.0-85059532533OAI: oai:DiVA.org:ri-40463DiVA, id: diva2:1359931
Note

Funding details: China Scholarship Council; Funding text 1: The European Copper Institute, Brussels, Belgium and the Scandinavian Copper Development Association are highly acknowledged for financial support, providing material and giving valuable comments. We are also grateful to Oskar Karlsson and Mats Randelius at Swerea Kimab, Stockholm Sweden for help with SEM/EDS imaging and GDOES analyses. S. Jafarzadeh, J. Brunk and J. Sandberg, former PhD-students at KTH, are highly acknowledged for help with the field exposures. The authors would like to express their sincere gratitude to the China Scholarship Council for supporting Tingru Chang’s stay at KTH Royal Institute of Technology, Sweden. Appendix A

Available from: 2019-10-10 Created: 2019-10-10 Last updated: 2019-10-10Bibliographically approved

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