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XPS study on direct detection of passivator Irgamet 39™ on copper surfaces aged in insulating mineral oil

XPS study on direct detection of passivator Irgamet 39™ on copper surfaces aged in insulating mineral oil
XPS study on direct detection of passivator Irgamet 39™ on copper surfaces aged in insulating mineral oil
Corrosion of copper conductors in mineral oil insulated power transformers is a well-known problem in electrical power management and distribution worldwide. Recently, some corrosive compounds containing sulfur (e.g. DBDS, dibenzyl disulfide) have been identified to play an important role in this process. A common strategy to limit corrosion, either as precaution or remedy, is the addition of a passivator (Irgamet 39™, I39™) in the oil, with a recommended concentration of 100 ppm to protect the surface of conductors from chemical attack from corrosive oil components. In this study, samples of naturally non-corrosive oil with different concentrations of I39™ are used to treat copper surfaces that are aged under inert atmosphere and analyzed with X-ray Photoelectron (XPS) to assess directly the effective amount of passivator covering the surface of metal and its dependence on the original concentration in oil. The main aim is, therefore, to determine the effect of the concentration of I39™ originally in oil on the effective surface coverage of copper conductors to observe its distribution and to verify the recommended passivator concentration to be used.
978-1-4799-2596-4
1097-1100
Facciotti, M
3c5dd179-8124-4d79-99b2-faa2aa37e96f
Holt, A F
6a6195df-03d6-4174-a504-8ca2965e52df
Amaro, P S
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Brown, R C D
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Lewin, P L
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Wilson, G
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Jarman, P N
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Facciotti, M
3c5dd179-8124-4d79-99b2-faa2aa37e96f
Holt, A F
6a6195df-03d6-4174-a504-8ca2965e52df
Amaro, P S
09096f1c-3840-48a7-a65d-d734ff70c88c
Brown, R C D
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Lewin, P L
78b4fc49-1cb3-4db9-ba90-3ae70c0f639e
Wilson, G
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Jarman, P N
8e6247bc-f98c-4dac-b150-b7213f2184d5

Facciotti, M, Holt, A F, Amaro, P S, Brown, R C D, Lewin, P L, Wilson, G and Jarman, P N (2013) XPS study on direct detection of passivator Irgamet 39™ on copper surfaces aged in insulating mineral oil. IEEE 2013 Conference on Electrical Insulation and Dielectric Phenomena, Shenzhen, China. 19 - 22 Oct 2013. pp. 1097-1100 .

Record type: Conference or Workshop Item (Paper)

Abstract

Corrosion of copper conductors in mineral oil insulated power transformers is a well-known problem in electrical power management and distribution worldwide. Recently, some corrosive compounds containing sulfur (e.g. DBDS, dibenzyl disulfide) have been identified to play an important role in this process. A common strategy to limit corrosion, either as precaution or remedy, is the addition of a passivator (Irgamet 39™, I39™) in the oil, with a recommended concentration of 100 ppm to protect the surface of conductors from chemical attack from corrosive oil components. In this study, samples of naturally non-corrosive oil with different concentrations of I39™ are used to treat copper surfaces that are aged under inert atmosphere and analyzed with X-ray Photoelectron (XPS) to assess directly the effective amount of passivator covering the surface of metal and its dependence on the original concentration in oil. The main aim is, therefore, to determine the effect of the concentration of I39™ originally in oil on the effective surface coverage of copper conductors to observe its distribution and to verify the recommended passivator concentration to be used.

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Published date: 20 October 2013
Venue - Dates: IEEE 2013 Conference on Electrical Insulation and Dielectric Phenomena, Shenzhen, China, 2013-10-19 - 2013-10-22
Organisations: EEE

Identifiers

Local EPrints ID: 360875
URI: http://eprints.soton.ac.uk/id/eprint/360875
ISBN: 978-1-4799-2596-4
PURE UUID: 82deed27-8f2d-440a-837c-5e61a7815110
ORCID for R C D Brown: ORCID iD orcid.org/0000-0003-0156-7087

Catalogue record

Date deposited: 02 Jan 2014 11:52
Last modified: 21 Nov 2021 02:44

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Contributors

Author: M Facciotti
Author: A F Holt
Author: P S Amaro
Author: R C D Brown ORCID iD
Author: P L Lewin
Author: G Wilson
Author: P N Jarman

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