Transparent Alumina: A Light‐Scattering Model

Journal of the American Ceramic Society - Tập 86 Số 3 - Trang 480-486 - 2003
R. Apetz1,2, M. P. B. van Bruggen1,3
1Department of Inorganic Materials and Processing, Philips Research, Eindhoven, The Netherlands
2Presently at Philips Extreme UV GmbH, Aachen, Germany.
3*Member, American Ceramic Society.

Tóm tắt

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.

Từ khóa


Tài liệu tham khảo

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Thông tin
Thông tin xuất bản

Journal of the American Ceramic Society

Tập 86 Số 3

480-486

Thông tin tác giả