Texture of alumina by neutron diffraction and SEM-EBSD

E. Guilmeau, C. Henrist, T. S. Suzuki, Y. Sakka, D. Chateigner, D. Grossin, B. Ouladdiaf

研究成果: Conference contribution

11 被引用数 (Scopus)

抄録

The orientation distributions of α-Al2O3 textured ceramics are determined from neutron diffraction and SEM-EBSD. A curved position-sensitive detector coupled to a tilt angle (χ) scan allowed the whole neutron diffraction pattern treatment in the combined Rietveld-WIMV-Popa algorithm. Analyses from neutron and electron diffraction data gave similar results if EBSD data are smoothed to account for grain statistics. Four textured alumina ceramics were prepared by slip-casting under a high magnetic field and sintered at 800°C, 1300°C, 1400°C and 1600°C. The inverse pole figures and EBSD-mapping highlights the influence of the magnetic field and sintering temperature on the texture development. The inverse pole figures calculated for the fiber direction show a major (001) component for all the samples. With the increasing sintering temperature, the texture strength is enhanced and the c-axis distribution is sharper. The effectiveness of the combined approach for determining the crystallite size is also evident. As a global trend, the calculated crystallite size and observed grain size are similar and increase with the increasing sintering temperature. The mechanism of the texture development in the sintered specimens is certainly initiated from the preferred orientation of the green body after slip-casting under a high magnetic field. The basal texture is enhanced during sintering by selective anisotropic grain growth. We evidenced here the powerfulness of the Rietveld texture analysis correlated to SEM-EBSD calculation to provide a basis for the correlation of texture, microstructural parameters and anisotropic properties.

本文言語English
ホスト出版物のタイトルTextures of Materials, ICOTOM 14 - Proceedings of the 14th International Conference on Textures of Materials
出版社Trans Tech Publications Ltd
ページ1395-1400
ページ数6
PART 2
ISBN(印刷版)087849975X, 9780878499755
DOI
出版ステータスPublished - 2005
外部発表はい
イベント14th International Conference on Textures of Materials, ICOTOM 14 - Leuven, Belgium
継続期間: 2005 7 112005 7 15

出版物シリーズ

名前Materials Science Forum
番号PART 2
495-497
ISSN(印刷版)0255-5476
ISSN(電子版)1662-9752

Conference

Conference14th International Conference on Textures of Materials, ICOTOM 14
国/地域Belgium
CityLeuven
Period05/7/1105/7/15

ASJC Scopus subject areas

  • 材料科学(全般)
  • 凝縮系物理学
  • 材料力学
  • 機械工学

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