Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5438766 | Ceramics International | 2016 | 7 Pages |
Abstract
Young's moduli (E) and thermal expansion coefficients (TECs) of the alumina-mullite-pore system (96.4-99.5% relative density) were measured for a wide mullite fraction range from 0 to 100Â vol%. Both E and TEC values decreased at high mullite fractions. These properties were theoretically analyzed with four proposed model structures that were constructed by three-phase systems of mullite (or alumina) continuous phase 2-pore dispersed phase 1-alumina (or mullite) dispersed phase 3. The ratios of E(theoretical)/E(experimental) and TEC(theoretical)/TEC(experimental) were very close to unity, depending on the mullite fraction. That is, the measured E and TEC values are closely related to the change in the composite microstructure as a function of mullite fraction.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Yoshihiro Hirata, Shota Itoh, Taro Shimonosono, Soichiro Sameshima,