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Passivators, corrosive sulphur and surface chemistry. Tools for the investigation of effective protection

Passivators, corrosive sulphur and surface chemistry. Tools for the investigation of effective protection
Passivators, corrosive sulphur and surface chemistry. Tools for the investigation of effective protection
The effects of corrosive sulphur in oil-filled power assets have been extensively studied over the last decade, as have remedial strategies to combat their impact. Passivation of the metal conductor by adding an organic passivator (e.g. Irgamet™39) to the insulating oil remains one of the preferred mitigation approaches due to its favourable cost-performance ratio. Recent approaches to the study of the chemistry of copper passivation and corrosion in insulating liquids are described using analytical tools typical of surface science. An overview of the physical principles involved is provided, followed by examples describing applications of XPS (X-ray photoelectron spectroscopy) and SSIMS (static secondary ion mass spectrometry). The advantages of these techniques are discussed, together with a critical evaluation of their limitations, in fundamental studies of passivation performance. Finally, their possible use as post-mortem diagnostic tools for power transformers is discussed.
27-35
Facciotti, M
3c5dd179-8124-4d79-99b2-faa2aa37e96f
Amaro, P S
09096f1c-3840-48a7-a65d-d734ff70c88c
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
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, Brown, R C D, Lewin, P L, Pilgrim, J A, Wilson, G and Jarman, P N (2014) Passivators, corrosive sulphur and surface chemistry. Tools for the investigation of effective protection. MyTransfo 2014: Oil and Transformer, Italy. 18 - 19 Nov 2014. pp. 27-35 .

Record type: Conference or Workshop Item (Paper)

Abstract

The effects of corrosive sulphur in oil-filled power assets have been extensively studied over the last decade, as have remedial strategies to combat their impact. Passivation of the metal conductor by adding an organic passivator (e.g. Irgamet™39) to the insulating oil remains one of the preferred mitigation approaches due to its favourable cost-performance ratio. Recent approaches to the study of the chemistry of copper passivation and corrosion in insulating liquids are described using analytical tools typical of surface science. An overview of the physical principles involved is provided, followed by examples describing applications of XPS (X-ray photoelectron spectroscopy) and SSIMS (static secondary ion mass spectrometry). The advantages of these techniques are discussed, together with a critical evaluation of their limitations, in fundamental studies of passivation performance. Finally, their possible use as post-mortem diagnostic tools for power transformers is discussed.

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Published date: 18 November 2014
Venue - Dates: MyTransfo 2014: Oil and Transformer, Italy, 2014-11-18 - 2014-11-19
Organisations: Organic Chemistry: Synthesis, Catalysis and Flow, EEE

Identifiers

Local EPrints ID: 372172
URI: http://eprints.soton.ac.uk/id/eprint/372172
PURE UUID: 6fca920c-5b5d-4e97-86cb-1cd36f5227b5
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: 28 Nov 2014 15:12
Last modified: 06 Jun 2018 13:01

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Contributors

Author: M Facciotti
Author: P S Amaro
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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