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Grain growth kinetics of cobait-doped SnO2 by varying Nb 2O5 content

  • Kyungpook National University

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

5 Scopus citations

Abstract

SnO2 ceramics were co-doped with the aliovalent ions of CoO and Nb2O5 and the grain growth behavior of the SnO2 was investigated. When only CoO was doped, the grain growth exponent of SnO2 was 3. As the amount of Nb2O5 increased, the exponent changed from 3 to 2 when 0.505 mol% of Nb2O5 was added. The further addition of Nb2O5 changed the exponent from 2 to 3. When Nb2O5 content was 0.505 mol%, of which the grain growth exponent was 2, it is believed that an iso-electric point is formed without grain boundary segregation, since the respective space charges, generated by Nb5+ and Co3+ might compensate each other.

Original languageEnglish
Title of host publicationProgress in Powder Metallurgy - Proceedings of the 2006 Powder Metallurgy World Congress and Exhibition (PM 2006)
PublisherTrans Tech Publications Ltd.
Pages529-532
Number of pages4
EditionPART 1
ISBN (Print)0878494197, 9780878494194
DOIs
StatePublished - 2007
Event2006 Powder Metallurgy World Congress and Exhibition, PM 2006 - Busan, Korea, Republic of
Duration: 24 Sep 200628 Sep 2006

Publication series

NameMaterials Science Forum
NumberPART 1
Volume534-536
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Conference

Conference2006 Powder Metallurgy World Congress and Exhibition, PM 2006
Country/TerritoryKorea, Republic of
CityBusan
Period24/09/0628/09/06

Keywords

  • Acceptor
  • Co-doping
  • Donor
  • Grain growth
  • Grain growth exponent
  • Segregation

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