Effective Grain Alignment in Bi4Ti3O12 Ceramics by Superplastic-Deformation-Induced Directional Dynamic Ripening


  • This work was supported by the Swedish Research Council through grant 621-2002-4299 and the National Natural Science Foundation of China through grants 50328203 and 50472013. Supporting Information is available online from Wiley InterScience or from the author.


original image

Effective grain alignment is accomplished in Bi4Ti3O12 ceramics by a new processing concept based on superplastic-deformation-induced directional dynamic ripening. The developed anisotropic ceramics with well-aligned grain structures (see Figure) exhibit unique anisotropic dielectric and piezoelectric properties. This new processing concept opens up new possibilities for preparing two-dimensional microstructures composed of anisotropic grains for a wide range of ceramics.