Member, American Ceramic Society.
Transparent Alumina: A Light-Scattering Model
Article first published online: 20 DEC 2004
Journal of the American Ceramic Society
Volume 86, Issue 3, pages 480–486, March 2003
How to Cite
Apetz, R. and van Bruggen, M. P. B. (2003), Transparent Alumina: A Light-Scattering Model. Journal of the American Ceramic Society, 86: 480–486. doi: 10.1111/j.1151-2916.2003.tb03325.x
I. Tanaka—contributing editor
Supported by the European Commission under Project STARELIGHT CSG-00088.
- Issue published online: 20 DEC 2004
- Article first published online: 20 DEC 2004
- Manuscript No. 186880. Received June 24, 2002; approved November 22, 2002.
- optical materials/properties;
- polycrystalline materials;
A model based on Rayleigh–Gans–Debye light-scattering theory has been developed to describe the light transmission properties of fine-grained, fully dense, polycrystalline ceramics consisting of birefringent crystals. This model extends light transmission models based on geometrical optics, which are valid only for coarse-grained microstructures, to smaller crystal sizes. We verify our model by measuring the light transmission properties of fully dense (>99.99%), polycrystalline α-Al2O3 (PCA) with mean crystal sizes ranging from 60 to 0.3 μm. The remarkable transparency exhibited by PCA samples with small crystal sizes (<2 μm) is well explained by this model.