首页|A Polymer Complexing Route for Low Temperature Synthesis of Perovskite Lanthanum Aluminate Powder

A Polymer Complexing Route for Low Temperature Synthesis of Perovskite Lanthanum Aluminate Powder

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Lanthanum aluminate powders were prepared via a polymer complexing method by using PEG as complexing agent. The LaAlO_3 powder was characterized by XRD and SEM. The influence of processing parameters such as molar ratio of PEG monomers to metal cations (PEG:Me~(n+)) and aging process on the phase purity and powder morphology were investigated. The calcined powder with the PEG:Me~(n+) ratio larger than 2:1 may contAlN the secondary phase, namely La_2O_3. The formation of phase pure LaAlO_3 powder occurs when the PEG:Me~(n+) ratio is 1:1 or enough gelation time is involved. Although the phase pure powder is obtAlNed by this PEG method, all the single phase LaAlO_3 powders are found to have seriously aggregated particles. The weakly agglomerated powder morphology is only found in the powders which contain La_2O_3.

perovskitelanthanum aluminatepolymer complexingPEG

Shuai Li、Bill Bergman、Zhe Zhao

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Department of Materials Science and Engineering, School of Industrial Engineering and Management, Royal Institute of Technology, SE-10044, Sweden Department of Physical, Inorganic and Structural Chemistry, Arrhenius Laboratory, Stockholm University, SE-10691, Sweden

Department of Materials Science and Engineering, School of Industrial Engineering and Management, Royal Institute of Technology, SE-10044, Sweden

Department of Physical, Inorganic and Structural Chemistry, Arrhenius Laboratory, Stockholm University, SE-10691, Sweden

2010

10.4028/www.scientific.net/KEM.434-435.863

Key engineering materials

Key engineering materials

ISSN：1013-9826
年,卷(期)：2010.434/435
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