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Contact-based corrosion mechanism leading to copper sulphide deposition on insulating paper used in oil-immersed electrical power equipment

Contact-based corrosion mechanism leading to copper sulphide deposition on insulating paper used in oil-immersed electrical power equipment
Contact-based corrosion mechanism leading to copper sulphide deposition on insulating paper used in oil-immersed electrical power equipment
XPS and EDX were used to study CuxS deposition in Kraft insulating paper obtained from ageing paper samples in contact with a copper sheet, in mineral oil containing dibenzyl disulphide (DBDS). Qualitative and quantitative evidence of CuxS were obtained from bulk and surface analyses of insulating paper provided by the different depth resolution of the techniques used. The influence of [DBDS], oxygen, time, and Cu-paper contact upon the formation and mobilisation of CuxS were studied. A contact-based mechanism to explain CuxS contamination on paper and its displacement was proposed. The role of O2 in enhancing CuxS displacement was also investigated.
0010-938X
172-179
Facciotti, M
3c5dd179-8124-4d79-99b2-faa2aa37e96f
Amaro, P S
09096f1c-3840-48a7-a65d-d734ff70c88c
Holt, A F
6a6195df-03d6-4174-a504-8ca2965e52df
Brown, R C D
21ce697a-7c3a-480e-919f-429a3d8550f5
Lewin, P L
78b4fc49-1cb3-4db9-ba90-3ae70c0f639e
Pilgrim, J A
4b4f7933-1cd8-474f-bf69-39cefc376ab7
Wilson, G
25fbd90e-6949-481c-9e75-0d457003c839
Jarman, P N
8e6247bc-f98c-4dac-b150-b7213f2184d5
Facciotti, M
3c5dd179-8124-4d79-99b2-faa2aa37e96f
Amaro, P S
09096f1c-3840-48a7-a65d-d734ff70c88c
Holt, A F
6a6195df-03d6-4174-a504-8ca2965e52df
Brown, R C D
21ce697a-7c3a-480e-919f-429a3d8550f5
Lewin, P L
78b4fc49-1cb3-4db9-ba90-3ae70c0f639e
Pilgrim, J A
4b4f7933-1cd8-474f-bf69-39cefc376ab7
Wilson, G
25fbd90e-6949-481c-9e75-0d457003c839
Jarman, P N
8e6247bc-f98c-4dac-b150-b7213f2184d5

Facciotti, M, Amaro, P S, Holt, A F, Brown, R C D, Lewin, P L, Pilgrim, J A, Wilson, G and Jarman, P N (2014) Contact-based corrosion mechanism leading to copper sulphide deposition on insulating paper used in oil-immersed electrical power equipment. Corrosion Science, 84, 172-179.

Record type: Article

Abstract

XPS and EDX were used to study CuxS deposition in Kraft insulating paper obtained from ageing paper samples in contact with a copper sheet, in mineral oil containing dibenzyl disulphide (DBDS). Qualitative and quantitative evidence of CuxS were obtained from bulk and surface analyses of insulating paper provided by the different depth resolution of the techniques used. The influence of [DBDS], oxygen, time, and Cu-paper contact upon the formation and mobilisation of CuxS were studied. A contact-based mechanism to explain CuxS contamination on paper and its displacement was proposed. The role of O2 in enhancing CuxS displacement was also investigated.

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Published date: 1 July 2014
Organisations: Chemistry, EEE

Identifiers

Local EPrints ID: 366598
URI: http://eprints.soton.ac.uk/id/eprint/366598
ISSN: 0010-938X
PURE UUID: 14793e85-f56d-40ce-ae2b-4ae38d2e8198
ORCID for R C D Brown: ORCID iD orcid.org/0000-0003-0156-7087
ORCID for J A Pilgrim: ORCID iD orcid.org/0000-0002-2444-2116

Catalogue record

Date deposited: 03 Jul 2014 11:06
Last modified: 17 Dec 2019 01:57

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Contributors

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

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