Naslov
Structure and crystallization study of iron phosphate glasses

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

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings of the 5th Conference and Exibition of the European Ceramic Society,Versailles, 20-26.07.1997., J-P- Baumard / - Pariz, 1997, 2212-2215

Skup
The European Ceramic Society

Mjesto i datum
Versailles, Francuska, 22.07.1997. - 26.07.1997

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Phosphate glases; Structure; Crystallization; Raman spectroscopy

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 (15<x<50) 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
Fizika

POVEZANOST RADA