Glass Formation in the MoO3-La2O3-Nd2O3 System

Abstract:

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Novel low melting glasses in the MoO3-La2O3-Nd2O3 system were obtained at different cooling rates (102 K/s and 104-105 K/s). Characterization of the amorphous samples was made by differential thermal analysis (DTA) and X-ray absorption fine structure (XAFS) method. According to DTA data of the glass samples, the glass transition temperatures are at 325-330 0C, the crystallization started above 410 0C and the melting temperatures are at 660-720 0C. A structural model of glasses was suggested on the basis of XAFS and IR investigations. It was shown that the predominant structural units in the amorphous network of glasses containing 90 -80 mol% MoO3 are MoO6 groups. The appearance of MoO4 groups deteriorates the glass formation ability.

Info:

Periodical:

Advanced Materials Research (Volumes 39-40)

Edited by:

M. Liška, D. Galusek, R. Klement and V. Petrušková

Pages:

37-40

DOI:

10.4028/www.scientific.net/AMR.39-40.37

Citation:

L. Aleksandrov et al., "Glass Formation in the MoO3-La2O3-Nd2O3 System", Advanced Materials Research, Vols. 39-40, pp. 37-40, 2008

Online since:

April 2008

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Price:

$35.00

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