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Zircon Synthesis via Sintering of Milled SiO 2 and ZrO 2
Author(s) -
Spearing Dane R.,
Huang John Y.
Publication year - 1998
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1998.tb02577.x
Subject(s) - zircon , sintering , materials science , slurry , yield (engineering) , particle size , metallurgy , mineralogy , chemical engineering , composite material , chemistry , geology , geochemistry , engineering
The formation of zircon (ZrSiO 4 ) via sintering of milled SiO 2 and ZrO 2 powders was studied, and the effects of slurry vs dry milling, sintering time, and particle size on zircon yield were examined. It was found that very high zircon yields could be obtained via slurry milling, cold pressing, and sintering of the oxide precursors. The controlling factor in determining zircon yield was found to be the particle size of the SiO 2 and ZrO 2 powders. Zircon yield as a function of sintering time was examined, and found to be similar to previous studies in which sol‐gel precursors seeded with zircon were used. SEM studies reveal a homogeneous product with particle sizes on the order of 1–5 µm. It was found that complete reaction to zircon can be achieved from a once‐through milling, pressing, and sintering process of SiO 2 ‐ZrO 2 powders.