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

    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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