Grain size reduction and surface modification effect in polycrystalline Y2O3 subject to high pressure processing

Jafar F. Al-Sharab, Bernard H. Kear, S. Deutsch, Stephen D. Tse

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

Abstract

Over the past decade, there has been growing interest in the fabrication of nanostructured oxide ceramics for diverse structural and functional applications. Typically, a nanostructured oxide is fabricated by pressure- or field-assisted sintering of a nanopowder compact. Even so, it is difficult to achieve complete densification without causing significant grain growth. In this paper, we describe a reversible-phase-transformation mechanism to convert full dense poly crystalline Y2O3 directly into the nanocrystalline state under high pressure and high temperature processing conditions (8GPa/1000 °C). In addition, we report a surface modification effect and superplastic compressive phenomena observed in polycrystalline Y 2O3 processed at high temperature/pressure conditions.

Original languageEnglish (US)
Title of host publicationNanostructured Materials and Nanotechnology V - A Collection of Papers Presented at the 35th International Conference on Advanced Ceramics and Composites, ICACC
PublisherAmerican Ceramic Society
Pages157-164
Number of pages8
Edition7
ISBN (Print)9781118059920
DOIs
StatePublished - Jan 1 2011
EventNanostructured Materials and Nanotechnology V - 35th International Conference on Advanced Ceramics and Composites, ICACC - Daytona Beach, FL, United States
Duration: Jan 23 2011Jan 28 2011

Publication series

NameCeramic Engineering and Science Proceedings
Number7
Volume32
ISSN (Print)0196-6219

Other

OtherNanostructured Materials and Nanotechnology V - 35th International Conference on Advanced Ceramics and Composites, ICACC
CountryUnited States
CityDaytona Beach, FL
Period1/23/111/28/11

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Materials Chemistry

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    Al-Sharab, J. F., Kear, B. H., Deutsch, S., & Tse, S. D. (2011). Grain size reduction and surface modification effect in polycrystalline Y2O3 subject to high pressure processing. In Nanostructured Materials and Nanotechnology V - A Collection of Papers Presented at the 35th International Conference on Advanced Ceramics and Composites, ICACC (7 ed., pp. 157-164). (Ceramic Engineering and Science Proceedings; Vol. 32, No. 7). American Ceramic Society. https://doi.org/10.1002/9781118095362.ch15