The characterization of the orthorhombic to hexagonal phase transformation in Dy2TiO5

Kevin C. Seymour, Daniel Ribero, Waltraud M. Kriven

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In situ high temperature synchrotron X-ray diffraction was employed to shed light on the kinetics and mechanisms behind the transformation between the orthorhombic and hexagonal phase in Dy2TiO5. The thermal expansion behavior was examined to bring additional clarity and understanding of the mechanism at the transition temperature. The transformation was found to be reconstructive and first ordered in nature, and fit well with the JMAK nucleation and growth kinetic model, with an Avrami exponent of 1.66 and activation energy of 267 kJ/mol.

Original languageEnglish (US)
Title of host publicationPTM 2015 - Proceedings of the International Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015
EditorsLong-Qing Chen, Matthias Militzer, Gianluigi Botton, James Howe, Chadwick Sinclair, Hatem Zurob
PublisherInternational Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015
Pages345-352
Number of pages8
ISBN (Electronic)9780692437360
StatePublished - 2015
EventInternational Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015, PTM 2015 - Whistler, Canada
Duration: Jun 28 2015Jul 3 2015

Publication series

NamePTM 2015 - Proceedings of the International Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015

Other

OtherInternational Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015, PTM 2015
CountryCanada
CityWhistler
Period6/28/157/3/15

Keywords

  • Kinetics
  • Phase transformations
  • Rare-earth titanates
  • X-ray diffraction

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Inorganic Chemistry
  • Materials Chemistry
  • Metals and Alloys

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