Naslov
Structure and crystallization study of iron phosphate glasses

Autori
Moguš-Milanković, Andrea ; Day, Delbert E. ; Furić, Krešimir

Izvornik
Key Engineering Materials (1013-9826) 132/136 (1997); 2212-2215

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
iron phosphate glasses; structure; crystallization

Sažetak
Phosphate glasses have been studied extensively for their potential applications as disposal of nuclear waste. Addition of iron oxide to phosphate glasses has a significant effect on the structure and properties of these glasses. Differential thermal analysis, x-ray diffraction analysis and Raman spectroscopy have been used in the investigation of structural changes in the phosphate network and crystalline products of xFe2O3(100-x)P2O5 glasses. The addition of Fe2O3 in the phosphate glass results in the systematic changes from chain-like phosphate structure present in metaphosphate to the orthophosphate structure. With increasing iron content, there is a corresponding increase in the concentration of iron(III) ions in the glass and a decrease of the number of P-O-P bonds since these bonds are replaced by an increasing number of Fe-O-P bonds. The results of the crystallization process suggest that the glassy and its crystalline compositions both have the same basic phosphate structure.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

Napomena
ISBN 978-0-87849-761-4.

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