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The Kinetics and Mechanism of Atmospheric Corrosion Occurring on Tin and Iron-Tin Intermetallic Coated Steels: II. Filiform Corrosion

N. Wint, H. N. McMurray, G. Williams, A. C. A. de Vooys, Geraint Williams Orcid Logo, Hamilton McMurray, Natalie Wint Orcid Logo

Journal of The Electrochemical Society, Volume: 163, Issue: 2, Pages: C1 - C6

Swansea University Authors: Geraint Williams , Hamilton McMurray , Natalie Wint

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DOI (Published version): 10.1149/2.1081514jes

Abstract

This paper describes a systematic study into the initiation and propagation of filiform corrosion (FFC) on pure iron, pure tin and industrially important tin and iron-tin intermetallic (FeSn and FeSn2) coatings for packaging steels, as a function of coating weight. The time-dependent extent of FFC w...

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Published in: Journal of The Electrochemical Society
ISSN: 0013-4651 1945-7111
Published: 2016
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URI: https://cronfa.swan.ac.uk/Record/cronfa35064
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spelling 2017-09-07T12:07:29.3474158 v2 35064 2017-08-30 The Kinetics and Mechanism of Atmospheric Corrosion Occurring on Tin and Iron-Tin Intermetallic Coated Steels: II. Filiform Corrosion 0d8fc8d44e2a3c88ce61832f66f20d82 0000-0002-3399-5142 Geraint Williams Geraint Williams true false 56fc1b17ffc3bdf6039dc05c6eba7f2a Hamilton McMurray Hamilton McMurray true false 5be5dcc4b97c78b3063e258add4fff5c 0000-0002-9229-5728 Natalie Wint Natalie Wint true false 2017-08-30 MTLS This paper describes a systematic study into the initiation and propagation of filiform corrosion (FFC) on pure iron, pure tin and industrially important tin and iron-tin intermetallic (FeSn and FeSn2) coatings for packaging steels, as a function of coating weight. The time-dependent extent of FFC was determined optically. FFC was not observed on pure tin or tin coatings but was found to propagate at significantly reduced rates on the FeSn and FeSn2 intermetallic coatings, when compared to pure iron. An explanation of the findings is given, firstly, in terms of the open circuit potential (OCP) and the extent to which polarity of the galvanic corrosion cell formed between relevant phases permits FFC propagation, and secondly in terms of the relative susceptibility of the various phases to anodic dissolution. It is concluded that even when FFC is feasible thermodynamically, propagation rates may be negligible due to the low activity for anodic dissolution of tin and iron-tin intermetallics. Journal Article Journal of The Electrochemical Society 163 2 C1 C6 0013-4651 1945-7111 31 12 2016 2016-12-31 10.1149/2.1081514jes COLLEGE NANME Materials Science and Engineering COLLEGE CODE MTLS Swansea University 2017-09-07T12:07:29.3474158 2017-08-30T14:56:41.1338906 College of Engineering Engineering N. Wint 1 H. N. McMurray 2 G. Williams 3 A. C. A. de Vooys 4 Geraint Williams 0000-0002-3399-5142 5 Hamilton McMurray 6 Natalie Wint 0000-0002-9229-5728 7 0035064-30082017145842.pdf wint2015.pdf 2017-08-30T14:58:42.8170000 Output 867599 application/pdf Version of Record true 2017-08-30T00:00:00.0000000 false eng
title The Kinetics and Mechanism of Atmospheric Corrosion Occurring on Tin and Iron-Tin Intermetallic Coated Steels: II. Filiform Corrosion
spellingShingle The Kinetics and Mechanism of Atmospheric Corrosion Occurring on Tin and Iron-Tin Intermetallic Coated Steels: II. Filiform Corrosion
Geraint, Williams
Hamilton, McMurray
Natalie, Wint
title_short The Kinetics and Mechanism of Atmospheric Corrosion Occurring on Tin and Iron-Tin Intermetallic Coated Steels: II. Filiform Corrosion
title_full The Kinetics and Mechanism of Atmospheric Corrosion Occurring on Tin and Iron-Tin Intermetallic Coated Steels: II. Filiform Corrosion
title_fullStr The Kinetics and Mechanism of Atmospheric Corrosion Occurring on Tin and Iron-Tin Intermetallic Coated Steels: II. Filiform Corrosion
title_full_unstemmed The Kinetics and Mechanism of Atmospheric Corrosion Occurring on Tin and Iron-Tin Intermetallic Coated Steels: II. Filiform Corrosion
title_sort The Kinetics and Mechanism of Atmospheric Corrosion Occurring on Tin and Iron-Tin Intermetallic Coated Steels: II. Filiform Corrosion
author_id_str_mv 0d8fc8d44e2a3c88ce61832f66f20d82
56fc1b17ffc3bdf6039dc05c6eba7f2a
5be5dcc4b97c78b3063e258add4fff5c
author_id_fullname_str_mv 0d8fc8d44e2a3c88ce61832f66f20d82_***_Geraint, Williams
56fc1b17ffc3bdf6039dc05c6eba7f2a_***_Hamilton, McMurray
5be5dcc4b97c78b3063e258add4fff5c_***_Natalie, Wint
author Geraint, Williams
Hamilton, McMurray
Natalie, Wint
author2 N. Wint
H. N. McMurray
G. Williams
A. C. A. de Vooys
Geraint Williams
Hamilton McMurray
Natalie Wint
format Journal article
container_title Journal of The Electrochemical Society
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container_issue 2
container_start_page C1
publishDate 2016
institution Swansea University
issn 0013-4651
1945-7111
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college_str College of Engineering
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hierarchy_top_title College of Engineering
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hierarchy_parent_title College of Engineering
department_str Engineering{{{_:::_}}}College of Engineering{{{_:::_}}}Engineering
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description This paper describes a systematic study into the initiation and propagation of filiform corrosion (FFC) on pure iron, pure tin and industrially important tin and iron-tin intermetallic (FeSn and FeSn2) coatings for packaging steels, as a function of coating weight. The time-dependent extent of FFC was determined optically. FFC was not observed on pure tin or tin coatings but was found to propagate at significantly reduced rates on the FeSn and FeSn2 intermetallic coatings, when compared to pure iron. An explanation of the findings is given, firstly, in terms of the open circuit potential (OCP) and the extent to which polarity of the galvanic corrosion cell formed between relevant phases permits FFC propagation, and secondly in terms of the relative susceptibility of the various phases to anodic dissolution. It is concluded that even when FFC is feasible thermodynamically, propagation rates may be negligible due to the low activity for anodic dissolution of tin and iron-tin intermetallics.
published_date 2016-12-31T03:55:14Z
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