Glass Formation from Iron-rich Phosphate Melts

Author

Liyang Zhang
Richard K. Brow, Missouri University of Science and TechnologyFollow
Mark E. Schlesinger, Missouri University of Science and TechnologyFollow
Luciana Ghussn
Edgar D. Zanotto

Abstract

Iron-rich phosphate glasses with nominal Fe/P ratios between 1.0 and 1.6 were prepared by a rollerquenching technique. The critical cooling rates (CCR) for glass formation were estimated by differential thermal analysis and found to be in the range of 103-104 °C/s for the iron-rich melts, compared to 1-10 °C/s for conventional iron phosphate melts with nominal Fe/P ratios near 0.50. The Fe(II)/Fetotal fraction in the quenched glasses increases with melt time and temperature, and ranges between 0.30 and 0.55 for theglasses studied. Raman spectroscopy indicates that the structures of the iron-rich phosphate glasses are based on isolated orthophosphate tetrahedra, similar to what are found in α-FePO 4. © 2010 Elsevier B.V. All rights reserved.

Recommended Citation

L. Zhang et al., "Glass Formation from Iron-rich Phosphate Melts," Journal of Non-Crystalline Solids, Elsevier, Jan 2010.

The definitive version is available at https://doi.org/10.1016/j.jnoncrysol.2010.04.019

Department(s)

Materials Science and Engineering

International Standard Serial Number (ISSN)

0022-3093; 1873-4812

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2010 Elsevier, All rights reserved.

Publication Date

01 Jan 2010