Liquid-Liquid Phase Separation of Melts and Glasses in Ferric Ferrous Oxide-Silica System

Autor:	Toyohiko Yano, Masayuki Yamane, Akio Koike, Shin-ichiro Inoue, Yoshikazu Kameshima, Atsuo Yasumori, Kenichi Okada
Rok vydání:	1996
Předmět:	Quenching Materials science Spinodal decomposition Analytical chemistry Oxide Mineralogy Microstructure Ferrous chemistry.chemical_compound chemistry Phase (matter) medicine Ferric medicine.drug Phase diagram
Zdroj:	MRS Proceedings. 455
ISSN:	1946-4274 0272-9172
Popis:	The existence of liquid-liquid miscibility gap in ferric ferrous oxide-silica system has been reported, however, the phase separation phenomena and the derived morphology of the phase separated glasses are uncertain. In this study, the melt-quenched samples of 5 Fe3O4-95 SiO2 and 15 Fe3O4-85 SiO2 (mol%) were prepared by melting at 2300°C or 2200°C (expected to be above miscibility gap), and subsequently at 1800°C or 1750°C (in immiscible region) by use of infrared image furnace and quenching at the rate of ≈102 K/sec. The glassy materials exhibited phase separation having discrete spherical particles or interconnected structure due to the composition, melting temperature and time. Also, the segregation of Fe component occurred during melting, which was caused by the difference of specific gravity of components in the melt.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::892e20e3a54451513104150c6e1653cf https://doi.org/10.1557/proc-455-459 Zobrazit plný text záznamu Full text from SpringerLink