Thermal Decomposition of Degassed Barium Titanyl Oxalate: In Comparison to the Solid-State Reaction Mechanism

Title
Thermal Decomposition of Degassed Barium Titanyl Oxalate: In Comparison to the Solid-State Reaction Mechanism
Author(s)
정원식[정원식]홍창훈[홍창훈]민봉기박지호[박지호]윤당혁
Keywords
DOPED BATIO3 POWDERS; INTERMEDIATE; TETRAHYDRATE
Issue Date
201101
Publisher
WILEY-BLACKWELL
Citation
JOURNAL OF THE AMERICAN CERAMIC SOCIETY, v.94, no.1, pp.166 - 172
Abstract
This study examined the formation of BaTiO3 from degassed barium titanyl oxalate (degassed BTO), which was heat treated at 500 degrees C for 2 h followed by 20 min of aqueous milling, upon further heating. The evolution of BaCO3, Ti-based interphase and BaTiO3 at various temperatures was examined by X-ray diffraction, high-resolution scanning transmission electron microscopy, and electron energy loss spectroscopy. When the degassed BTO was exposed to an aqueous milling, significant amounts of needle-shaped BaCO3 crystals formed preferentially, which made this system similar to that of a solid-state reaction. However, the formation mechanism of BaTiO3 observed in this study was found to be different from that of a solid-state reaction due to the different nature of the Ti-based phase.
URI
http://hdl.handle.net/YU.REPOSITORY/25764http://dx.doi.org/10.1111/j.1551-2916.2010.04064.x
ISSN
0002-7820
Appears in Collections:
중앙도서관 > rims journal
공과대학 > 신소재공학부 > Articles
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