Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10624136 | Ceramics International | 2016 | 5 Pages |
Abstract
Slip-cast ceramic samples of the system (100âx) (ZrO2-3.5 mol% Y2O3)-xAl2O3 (abridged as (100âx) 3.5 YSZ/xAl2O3 composite, where x is expressed in wt%) were examined using dilatometry, isothermal sintering and electron microscopy methods. The shrinkage in the range 1100-1300 °C was found to be higher for the (100âx) 3.5 YSZ/xAl2O3 samples with prevailing fraction of PSZ than for the composites with a corundum matrix. When the weight fraction of corundum was increased, the relative shrinkage of the (100âx) 3.5 YSZ/xAl2O3 samples decreased and the open porosity of the ceramic materials grew. The effect of -Al2O3 impurity on the sintering process and linear dimensions of ceramics is shown. Heat treatment of (50-40) 3.5 YSZ/(50-60) Al2O3 composites at 1300 °C are proposed as the optimum conditions for porous diaphragm formation.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
V.D. Zhuravlev, Yu.I. Komolikov, L.V. Ermakova,