Title

Method to assess the homogeneity of partially crystallized glasses: Application to a photo-thermo-refractive glass

Authors

Authors

J. Lumeau; A. Sinitskii; L. Glebova; L. B. Glebov;E. D. Zanotto

Comments

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Abbreviated Journal Title

J. Non-Cryst. Solids

Keywords

Crystallization; Glass ceramics; Optical microscopy; Photoinduced; effects; Calorimetry; Materials Science, Ceramics; Materials Science, Multidisciplinary

Abstract

We describe a new method for the study of both optical and crystallization homogeneity of partially crystallized glasses or glass-ceramics at different spatial scales (from 100 mm to 1 mu m). The method relies on the association of different techniques, such as interferometry, optical microscopy and differential scanning calorimetry. The method was tested to probe the optical and crystallization homogeneity of both as-made and UV-exposed, and pre-nucleated samples of a photo-thermo-refractive (PTR) glass. This study demonstrates that pure UV-exposure did not lead to an improvement of the crystallization homogeneity of the glass. However, the benefit of associating UV-exposure and nucleation thermal treatment was clear. These combined treatments permit to homogenize the crystal distribution in PTR glass at millimeter and micron scale. This result is of major commercial interest. (C) 2009 Elsevier B.V. All rights reserved.

Journal Title

Journal of Non-Crystalline Solids

Volume

355

Issue/Number

34-36

Publication Date

1-1-2009

Document Type

Article

Language

English

First Page

1760

Last Page

1768

WOS Identifier

WOS:000269896400017

ISSN

0022-3093

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