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Facile Preparation of ZnTiO 3 Ceramic Powders in Sodium/Potassium Chloride Melts
Author(s) -
Xing Xianran,
Zhang Caiyan,
Qiao Lijie,
Liu Guirong,
Meng Jian
Publication year - 2006
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.1551-2916.2005.00853.x
Subject(s) - molten salt , calcination , thermogravimetry , differential thermal analysis , potassium , eutectic system , ceramic , materials science , salt (chemistry) , sodium , fourier transform infrared spectroscopy , inorganic chemistry , thermal analysis , scanning electron microscope , chemical engineering , mineralogy , chemistry , diffraction , microstructure , metallurgy , thermal , organic chemistry , catalysis , composite material , physics , optics , engineering , meteorology
A facile molten salt synthesis route was developed to prepare ZnTiO 3 ceramic powders with simple oxides ZnO and TiO 2 using sodium and potassium chloride eutectic salts as flux. The role of calcination temperature and time and the amount of salt addition to ZnTiO 3 formation was investigated by thermogravimetry‐differential thermal analysis, X‐ray diffraction and Fourier transformation‐infrared spectroscopy measurements. Pure hexagonal phase of ZnTiO 3 could be obtained from the mixture of the simple oxides and the chlorides (50 mol% KCl, 20 times to oxides in molar ratio) heating at 800°C for 6 h. The scanning electron microscopy images revealed the products were hexagonal sheets of about 1–3 μm size. Increasing the amount of salt aids in reducing the crystal sizes of final ceramic powders because of diluting the solution.