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Establishing a quantifiable tarnish timeline for comparison of anti-tarnish processes in metals

H.N.S. Yousef, R.J. Cobley, H.M. Davies, D.M. James, S. Mehmood, E. Sackett, J. Sienz, Helen Davies Orcid Logo, Haitham Yousef Orcid Logo, Richard Cobley Orcid Logo, Elizabeth Sackett Orcid Logo

Materials and Corrosion, Volume: 66, Issue: 10, Pages: 1120 - 1124

Swansea University Authors: Helen Davies Orcid Logo, Haitham Yousef Orcid Logo, Richard Cobley Orcid Logo, Elizabeth Sackett Orcid Logo

DOI (Published version): 10.1002/maco.201407969

Abstract

Brass samples were controllably tarnished using the thioacetamide accelerated corrosion (ISO 4538:1995) and synthetic sweat (ISO 3160–2:2003) methods. Spectrophotometry, energy dispersive X-ray spectroscopy (EDX) and electrochemical impedance spectroscopy (EIS) were performed on samples tarnished fo...

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Published in: Materials and Corrosion
Published: 2015
URI: https://cronfa.swan.ac.uk/Record/cronfa20511
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spelling 2018-01-19T10:27:14.4348369 v2 20511 2015-03-25 Establishing a quantifiable tarnish timeline for comparison of anti-tarnish processes in metals a5277aa17f0f10a481da9e9751ccaeef 0000-0003-4838-9572 Helen Davies Helen Davies true false f7e1da01dad6e24cfa51e7b7d036fbba 0000-0002-4589-7881 Haitham Yousef Haitham Yousef true false 2ce7e1dd9006164425415a35fa452494 0000-0003-4833-8492 Richard Cobley Richard Cobley true false 55d1695a53656de6b0bdfa4c08d8bcd4 0000-0002-5975-6967 Elizabeth Sackett Elizabeth Sackett true false 2015-03-25 MTLS Brass samples were controllably tarnished using the thioacetamide accelerated corrosion (ISO 4538:1995) and synthetic sweat (ISO 3160–2:2003) methods. Spectrophotometry, energy dispersive X-ray spectroscopy (EDX) and electrochemical impedance spectroscopy (EIS) were performed on samples tarnished for set exposure times over seven days. Synthetic sweat produced a loose surface corrosion layer, which limited the use of EIS and spectrophotometry, but for the thioacetamide method both measurements produced a continuous change over the time period. EDX was able to observe a continuous change in the surface layer chemistry for both methods over the whole timescale and represents the best characterisation method to establish an equivalent tarnish timeline against which anti-tarnish treated samples can be compared. The current study was conducted using brass, however the method can be used for quantifying tarnish on other metallic systems. Journal Article Materials and Corrosion 66 10 1120 1124 31 12 2015 2015-12-31 10.1002/maco.201407969 COLLEGE NANME Materials Science and Engineering COLLEGE CODE MTLS Swansea University 2018-01-19T10:27:14.4348369 2015-03-25T08:56:12.3464106 College of Engineering Engineering H.N.S. Yousef 1 R.J. Cobley 2 H.M. Davies 3 D.M. James 4 S. Mehmood 5 E. Sackett 6 J. Sienz 7 Helen Davies 0000-0003-4838-9572 8 Haitham Yousef 0000-0002-4589-7881 9 Richard Cobley 0000-0003-4833-8492 10 Elizabeth Sackett 0000-0002-5975-6967 11 0020511-26032015090345.pdf Establishing__a__Quantifiable__Tarnish__Timeline__for__Comparison__of__Anti-Tarnish__Processes__in__Metals_Final_Notice.pdf 2015-03-26T09:03:45.9830000 Output 1206467 application/pdf Accepted Manuscript true 2016-02-10T00:00:00.0000000 true
title Establishing a quantifiable tarnish timeline for comparison of anti-tarnish processes in metals
spellingShingle Establishing a quantifiable tarnish timeline for comparison of anti-tarnish processes in metals
Helen Davies
Haitham Yousef
Richard Cobley
Elizabeth Sackett
title_short Establishing a quantifiable tarnish timeline for comparison of anti-tarnish processes in metals
title_full Establishing a quantifiable tarnish timeline for comparison of anti-tarnish processes in metals
title_fullStr Establishing a quantifiable tarnish timeline for comparison of anti-tarnish processes in metals
title_full_unstemmed Establishing a quantifiable tarnish timeline for comparison of anti-tarnish processes in metals
title_sort Establishing a quantifiable tarnish timeline for comparison of anti-tarnish processes in metals
author_id_str_mv a5277aa17f0f10a481da9e9751ccaeef
f7e1da01dad6e24cfa51e7b7d036fbba
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55d1695a53656de6b0bdfa4c08d8bcd4
author_id_fullname_str_mv a5277aa17f0f10a481da9e9751ccaeef_***_Helen Davies
f7e1da01dad6e24cfa51e7b7d036fbba_***_Haitham Yousef
2ce7e1dd9006164425415a35fa452494_***_Richard Cobley
55d1695a53656de6b0bdfa4c08d8bcd4_***_Elizabeth Sackett
author Helen Davies
Haitham Yousef
Richard Cobley
Elizabeth Sackett
author2 H.N.S. Yousef
R.J. Cobley
H.M. Davies
D.M. James
S. Mehmood
E. Sackett
J. Sienz
Helen Davies
Haitham Yousef
Richard Cobley
Elizabeth Sackett
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container_title Materials and Corrosion
container_volume 66
container_issue 10
container_start_page 1120
publishDate 2015
institution Swansea University
doi_str_mv 10.1002/maco.201407969
college_str College of Engineering
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description Brass samples were controllably tarnished using the thioacetamide accelerated corrosion (ISO 4538:1995) and synthetic sweat (ISO 3160–2:2003) methods. Spectrophotometry, energy dispersive X-ray spectroscopy (EDX) and electrochemical impedance spectroscopy (EIS) were performed on samples tarnished for set exposure times over seven days. Synthetic sweat produced a loose surface corrosion layer, which limited the use of EIS and spectrophotometry, but for the thioacetamide method both measurements produced a continuous change over the time period. EDX was able to observe a continuous change in the surface layer chemistry for both methods over the whole timescale and represents the best characterisation method to establish an equivalent tarnish timeline against which anti-tarnish treated samples can be compared. The current study was conducted using brass, however the method can be used for quantifying tarnish on other metallic systems.
published_date 2015-12-31T03:30:51Z
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