On the conversion of bulk polycrystalline Y2O3 into the nanocrystalline state

Bernard H. Kear, Jafar F. Al-Sharab, Rajendra K. Sadangi, Stuart Deutsch, N. Beril Kavukcuoglu, Stephen Tse, Adrian Mann, Oleg A. Voronov, Christopher S. Nordahl

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Abstract

A reversible phase transformation (RPT) process is observed that converts fully dense polycrystalline Y2O3 directly into the nanocrystalline state. The process involves a forward transformation from cubic-to-monoclinic symmetry under a high pressure and a reverse transformation from monoclinic-to-cubic symmetry under a lower pressure. An example is given of a reduction in grain size of cubic-Y2O3 from 300 to 0.1 μm in a single pressure-induced RPT at 1000°C.

Original languageEnglish (US)
Pages (from-to)1744-1746
Number of pages3
JournalJournal of the American Ceramic Society
Volume94
Issue number6
DOIs
Publication statusPublished - Jun 1 2011

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All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Materials Chemistry

Cite this

Kear, B. H., Al-Sharab, J. F., Sadangi, R. K., Deutsch, S., Kavukcuoglu, N. B., Tse, S., ... Nordahl, C. S. (2011). On the conversion of bulk polycrystalline Y2O3 into the nanocrystalline state. Journal of the American Ceramic Society, 94(6), 1744-1746. https://doi.org/10.1111/j.1551-2916.2010.04333.x