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Study of mixed flowing gas exposure of copper

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Show simple item record Reid, M. Punch, Jeff Garfias-Mesias, L.F Shannon, K Belochapkine, Serguei Tanner, David A. 2013-12-03T14:39:36Z 2013-12-03T14:39:36Z 2008
dc.description peer-reviewed en_US
dc.description.abstract This paper describes the results of copper coupons exposed to a class III mixed flowing gas environment (MFG) following the guidelines given by the Battelle Laboratory and the International Electrotechnical Commission for environmental testing. Corrosion products were studied in detail using scanning electron microscope, energy dispersive X-ray spectroscopy (EDS), X-ray diffraction (XRD), focused ion beam (FIB), secondary ion mass spectroscopy (SIMS), and transmission electron microscope. The weight gain measured after each exposure was compared with the weight gain calculated from the cathodic reduction of the corrosion layers and cross sectioning using an FIB. The result shows a relatively good correlation between the measured and the calculated experimental values of weight gain. As expected, within the first week, the different corrosion layers thickened until they formed a thick layer that became the determining step for further growth. After several days of exposure the Cu coupons developed a complex multilayered structure consisting of cuprous oxide (Cu2S), cupric oxide (CuO), copper sulfide (Cu2S), covellite (CuS), and evidence of antlerite (3CuO SO3 2H(2)O). No Cl-containing corrosion products were identified using XRD. However, EDS and SIMS analysis showed that Cl was distributed throughout the corrosion products, indicating that although Cl is inside the corrosion products, it is not part of the crystalline structure. Also, this suggests that Cl plays an important role in accelerating the corrosion of Cu during exposure to the MFG class III test. (c) 2008 The Electrochemical Society. en_US
dc.language.iso eng en_US
dc.publisher Electrochemical Society en_US
dc.relation.ispartofseries Journal of Electrochemical Society;155 (4), C147-C153
dc.rights All copies, paper or electronic, or other use of the Work in any form must include the following notice: “© The Electrochemical Society, Inc. 2008. All rights reserved. Except as provided under U.S. copyright law, this work may not be reproduced, resold, distributed, or modified without the express permission of The Electrochemical Society (ECS). The archival version of this work was published in Journal of Electrochemical Society, 2008, 155(4), C147-C153, en_US
dc.subject H2S en_US
dc.subject pre-plated leadframes en_US
dc.subject corrosion products en_US
dc.subject creep corrosion en_US
dc.subject gold en_US
dc.subject air en_US
dc.subject sulfide en_US
dc.subject patina en_US
dc.subject H2S en_US
dc.title Study of mixed flowing gas exposure of copper en_US
dc.type info:eu-repo/semantics/article en_US
dc.type.supercollection all_ul_research en_US
dc.type.supercollection ul_published_reviewed en_US 2013-11-29T16:30:24Z
dc.description.version PUBLISHED
dc.contributor.sponsor SFI en_US
dc.relation.projectid 10/CE3/I405 en_US
dc.rights.accessrights info:eu-repo/semantics/openAccess en_US
dc.internal.rssid 1135772
dc.internal.copyrightchecked Yes
dc.description.status peer-reviewed

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