Pore Formation during Sintering of (Sr0.9La0.1)1－xTiO3+δ Perovskites (x=0, 0.04) Synthesized by the Pechini Method

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概要

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• The sintering behavior of (Sr0.9La0.1)1－xTi1－yO3+δ powders (x, y=0, 0.04), synthesized using the Pechini method, has been investigated. Stoichiometric (Sr0.9La0.1)TiO3+δ showed a single perovskite phase. For non-stoichiometric samples, secondary TiO2 and Sr2TiO4 phases were observed in the X-ray diffraction patterns of (Sr0.9La0.1)0.96TiO3+δ and (Sr0.9La0.1)Ti0.96O3+δ, respectively. It was found that during the sintering process, the (Sr0.9La0.1)0.96TiO3+δ and (Sr0.9La0.1)TiO3+δ samples expanded anomalously between 1300°C and 1400°C and between 1400°C and 1500°C, respectively, although the powders exhibited good sinterability. Scanning electron microscopy showed that the volume expansion was caused by pore formation within the samples. The release of oxygen from the samples was observed at temperatures at which the samples expanded and is considered to be the likely cause of the expansion.

著者

• Mori Masashi

  Central Research Institute Of Electric Power Industry

• Itoh Takanori

  Agc Seimi Chemical Co. Ltd.

• WANG Zhenwei

  Central Research Institute of Electric Power Industry

関連論文

• Pore Formation during Sintering of (Sr_La_)_TiO_Perovskites (x=0,0.04) Synthesized by the Pechini Method
• Pore Formation during Sintering of (Sr0.9La0.1)1－xTiO3+δ Perovskites (x=0, 0.04) Synthesized by the Pechini Method
• Effects of Bi Addition on Sintering and Electrical Properties of Scandia Stabilized Zirocnia as Intermediate-Temperature SOFC Electrolyte

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