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Corrosion Inhibition of Two Brass Alloys by Octadecanethiol in Humidified Air with Formic Acid
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Surface and Corrosion Science.
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Surface and Corrosion Science.ORCID iD: 0000-0002-4431-0671
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Surface and Corrosion Science.ORCID iD: 0000-0001-5180-9895
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2015 (English)In: Corrosion, ISSN 0010-9312, E-ISSN 1938-159X, Vol. 71, no 7, 908-917 p.Article in journal (Refereed) Published
Abstract [en]

Self-assembled monolayers of octadecanethiol (ODT) have previously shown to provide excellent corrosion inhibition on copper exposed to humidified air containing formic acid, mimicking indoor atmospheric corrosion. ODT layers are, however, much less efficient corrosion inhibitors for zinc. In this work, we elucidate the possibility of using ODT monolayers to inhibit corrosion of brass. Based on a quantitative analysis of corrosion products, we found that ODT provides equally good corrosion inhibition of single-phase Cu20Zn as of pure copper, retarding the transportation of corrosion stimulators to the brass surface. On double-phase Cu40Zn, however, local galvanic effects led to less efficient corrosion inhibition and more corrosion products than on Cu20Zn.

Place, publisher, year, edition, pages
2015. Vol. 71, no 7, 908-917 p.
Keyword [en]
atmospheric environments, atomic force microscopy, copper, corrosion inhibitor, interfacial effects, self-assembled, zinc
National Category
Corrosion Engineering
Identifiers
URN: urn:nbn:se:kth:diva-172494DOI: 10.5006/1648ISI: 000357516900010Scopus ID: 2-s2.0-84936945455OAI: oai:DiVA.org:kth-172494DiVA: diva2:848614
Note

QC 20150825

Available from: 2015-08-25 Created: 2015-08-25 Last updated: 2017-12-04Bibliographically approved

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Pan, JinshanLeygraf, Christofer

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