Itacolumite like high damping ceramics in the system Al 2 O 3 -TiO 2 -MgO

T. Shimazu, M. Miura, N. Isu, T. Ogawa, A. Ichikawa, Hideki Ishida

研究成果: Conference contribution

4 被引用数 (Scopus)

抄録

Ceramics is rigid and brittle originally. If the weakness could be overcome, the application will be widely expanded. Itacolumite known as high flexibility rock is the group of sand stone which consist of quartz and slight amount of muscovite. The microstructure of itacolumite has a lot of narrow gaps between the grains, the gap was thought to be formed by the dissolution of minerals in between quartz grains into the groundwater. This narrow space enables a little displacement of the particles, and the rock can bend with stress like plastic deformation. These characters of itacolumite showed the new ceramic functions such as stress relaxation properties and high damping capacity (internal friction Q -1 =0.03). The authors tried to develop high damping ceramics by the mimic of itacolumite, and found the Al 2 O 3 -TiO 2 -MgO ceramics. The ceramics had stress relaxation properties and high damping capacity (Q -1 =0.01) since microcracks were formed during sintering by the discontinuous grain growth and the anisotropic thermal expansion in the cooling process.

本文言語English
ホスト出版物のタイトルWATER DYNAMICS
ホスト出版物のサブタイトル3rd International Workshop on Water Dynamics
ページ69-71
ページ数3
DOI
出版ステータスPublished - 2006 5月 15
イベントWATER DYANMICS: 3rd International Workshop on Water Dynamics - Sendai, Japan
継続期間: 2005 11月 162005 11月 17

出版物シリーズ

名前AIP Conference Proceedings
833
ISSN(印刷版)0094-243X
ISSN(電子版)1551-7616

Other

OtherWATER DYANMICS: 3rd International Workshop on Water Dynamics
国/地域Japan
CitySendai
Period05/11/1605/11/17

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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