Enhancement of electrical conductivity and emission stability of oxide cathodes using Ni addition

Hdl Handle:
http://hdl.handle.net/10149/98380
Title:
Enhancement of electrical conductivity and emission stability of oxide cathodes using Ni addition
Authors:
Al-Ajili, A. N. H. (Adwan); Hodgson, S. N. B. (Simon); Baker, A. P.; Ray, A. K. (Asim Kumar); Travis, J. R. (Jon); Goodhand, C. J.
Affiliation:
Loughborough University. Institute of Polymer Technology and Materials Engineering.
Citation:
Al-Ajili, A. N. H. et. al. (2001) 'Enhancement of electrical conductivity and emission stability of oxide cathodes using Ni addition', Journal of Materials Science Materials in Electronics, 12 (2), pp.99-105.
Publisher:
Springer Verlag
Journal:
Journal of Materials Science Materials in Electronics
Issue Date:
Feb-2001
URI:
http://hdl.handle.net/10149/98380
DOI:
10.1023/A:1011202104097
Abstract:
An investigation has been carried out into the use of conductive phase additions to enhance the conductivity and emission behavior of the oxide cathode coating as used in CRTs. Electrical and emission characteristics have been studied for various additions of filamentary nickel (Ni) added to the sprayed strontium-barium carbonate precursors prior to spray deposition, followed by conventional thermal conversion and activation processes in vacuum. The conductivity and the electronic activation energy have been studied as a function of temperature in the range 300 to 1250 K, during conversion and activation processes allowing the conduction behavior to be compared to conventional materials. The conduction behavior has been found to change as a function of heat-treatment temperature as the conduction paths develop and subsequently evolve in the microstructure of the resultant composite coating during conversion, activation and subsequent aging/service life conditions, with metallic-dominated conduction at temperatures below 850 K and pore conduction mechanisms dominating at higher temperatures. The emission characteristics immediately after conversion are impaired by the Ni addition, however, the long-term emission characteristics show improvement with the conductive phase.
Type:
Article
Language:
en
Keywords:
electrical conductivity; emission stability; oxide cathodes; conductive phase additions
ISSN:
0957-4522; 1573-482X
Rights:
Author can archive post-print (ie final draft post-refereeing). For full details see http://www.sherpa.ac.uk/romeo/ [Accessed 10/05/2010]
Citation Count:
9 [Scopus, 10/05/2010]

Full metadata record

DC FieldValue Language
dc.contributor.authorAl-Ajili, A. N. H. (Adwan)en
dc.contributor.authorHodgson, S. N. B. (Simon)en
dc.contributor.authorBaker, A. P.en
dc.contributor.authorRay, A. K. (Asim Kumar)en
dc.contributor.authorTravis, J. R. (Jon)en
dc.contributor.authorGoodhand, C. J.en
dc.date.accessioned2010-05-10T15:11:40Z-
dc.date.available2010-05-10T15:11:40Z-
dc.date.issued2001-02-
dc.identifier.citationJournal of Materials Science Materials in Electronics; 12(2):99-105en
dc.identifier.issn0957-4522-
dc.identifier.issn1573-482X-
dc.identifier.doi10.1023/A:1011202104097-
dc.identifier.urihttp://hdl.handle.net/10149/98380-
dc.description.abstractAn investigation has been carried out into the use of conductive phase additions to enhance the conductivity and emission behavior of the oxide cathode coating as used in CRTs. Electrical and emission characteristics have been studied for various additions of filamentary nickel (Ni) added to the sprayed strontium-barium carbonate precursors prior to spray deposition, followed by conventional thermal conversion and activation processes in vacuum. The conductivity and the electronic activation energy have been studied as a function of temperature in the range 300 to 1250 K, during conversion and activation processes allowing the conduction behavior to be compared to conventional materials. The conduction behavior has been found to change as a function of heat-treatment temperature as the conduction paths develop and subsequently evolve in the microstructure of the resultant composite coating during conversion, activation and subsequent aging/service life conditions, with metallic-dominated conduction at temperatures below 850 K and pore conduction mechanisms dominating at higher temperatures. The emission characteristics immediately after conversion are impaired by the Ni addition, however, the long-term emission characteristics show improvement with the conductive phase.en
dc.language.isoenen
dc.publisherSpringer Verlagen
dc.rightsAuthor can archive post-print (ie final draft post-refereeing). For full details see http://www.sherpa.ac.uk/romeo/ [Accessed 10/05/2010]en
dc.subjectelectrical conductivityen
dc.subjectemission stabilityen
dc.subjectoxide cathodesen
dc.subjectconductive phase additionsen
dc.titleEnhancement of electrical conductivity and emission stability of oxide cathodes using Ni additionen
dc.typeArticleen
dc.contributor.departmentLoughborough University. Institute of Polymer Technology and Materials Engineering.en
dc.identifier.journalJournal of Materials Science Materials in Electronicsen
ref.citationcount9 [Scopus, 10/05/2010]en
or.citation.harvardAl-Ajili, A. N. H. et. al. (2001) 'Enhancement of electrical conductivity and emission stability of oxide cathodes using Ni addition', Journal of Materials Science Materials in Electronics, 12 (2), pp.99-105.-
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