Synthesis of barium titanate by the sol-gel process
作者： Christine Lemoine , Bernard Gilbert , Bernard Michaux , Jean-Paul Pirard , AndréJ. Lecloux
DOI: 10.1016/0022-3093(94)90309-3
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摘要: Abstract Homogeneous BaTiO3 gels were prepared by hydrolysis and polycondensation reactions between titanium isopropoxide barium hydroxide in the presence of methoxyethanol, methanol water. Gel formation mechanisms investigated Raman scattering spectrometry. Two during methods are carried out: either air with a possible carbonate or vacuum furnace, sheltered from CO2. The influence dyring method on texture is studied through nitrogen adsorption-desorption isotherm analyses. A heat treatment deduced thermogravimetry differential scanning calorimetry results. calcining temperature crystallization solids has been measured. For first time, transformation at 900°C cubic to tetragonal form observed polarization microscopy.
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