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The golden alloy Cu-5Zn-5Al-1Sn: A multi-analytical surface characterization
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Chemistry, Surface and Corrosion Science. University of Science and Technology Beijing, China.
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Chemistry, Surface and Corrosion Science.
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Chemistry, Surface and Corrosion Science.
2018 (English)In: Corrosion Science, ISSN 0010-938X, E-ISSN 1879-0496, Vol. 131, p. 94-103Article in journal (Refereed) Published
Abstract [en]

The golden alloy Cu-5Zn-5Al-1Sn has found many applications because of its appearance and resistance to tarnishing. The microstructure and multi-component surface oxide of Cu-5Zn-5Al-1Sn have been investigated through a multi-analytical approach. Compared to commercial Cu metal, Cu-5Zn-5Al-1Sn has significantly smaller grains and higher fraction of coherent twin boundaries. The 5-10 nm thick oxide formed after diamond polishing has four identified sub-oxides all contributing to the overall corrosion resistance. Cu2O is mainly located in the outer part, followed by ZnO, SnO2 and Al2O3 closer to the alloy substrate. The latter three possess barrier properties, while Cu2O exhibits a more complex structure.

Place, publisher, year, edition, pages
Elsevier, 2018. Vol. 131, p. 94-103
Keyword [en]
Copper alloy, Cathodic reduction, GDOES, XPS, Atmospheric corrosion
National Category
Metallurgy and Metallic Materials
Identifiers
URN: urn:nbn:se:kth:diva-223276DOI: 10.1016/j.corsci.2017.11.014ISI: 000423649800009Scopus ID: 2-s2.0-85033800421OAI: oai:DiVA.org:kth-223276DiVA, id: diva2:1183775
Note

QC 20180219

Available from: 2018-02-19 Created: 2018-02-19 Last updated: 2018-02-19Bibliographically approved

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Chang, Tingru

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