Low-Cost Fabrication for ZrO2-Based Electrolyte Thin-Substrate by Aqueous Gel-Casting
来源期刊：JOURNAL OF RARE EARTHS2004年第4期
论文作者：仝建峰 陈大明 刘晓光 李国军
Key words：yttria-stabilized zirconia; thin-substrates; aqueous slurries; ionic conductivity; rare earths;
Abstract: The possibility to fabricate yttria-stabilized zirconia (YSZ) thin-substrates by aqueous gel casting of high concentrated aqueous slurries was investigated. The effects of dispersant, pH value, and solid content of slurries for gel process on stability and viscosity of slurries were optimized. YSZ thin-substrates green bodies with 100 μm thickness and 100 mm×100 mm flat plate were fabricated. Microstructure observations, density and bending measurements show that these green bodies are homogeneous and highly densified. After sintering at 1873 K×2 h, the ionic conductivity reaches 0.155 S·cm-1 at 1273 K.
仝建峰1，陈大明1，刘晓光1，李国军1
(1.National Key Laboratory of Advanced Composites,Beijing Institute of Aeronautical Materials,Beijing 100095,China)
Abstract:The possibility to fabricate yttria-stabilized zirconia (YSZ) thin-substrates by aqueous gel casting of high concentrated aqueous slurries was investigated. The effects of dispersant, pH value, and solid content of slurries for gel process on stability and viscosity of slurries were optimized. YSZ thin-substrates green bodies with 100 μm thickness and 100 mm×100 mm flat plate were fabricated. Microstructure observations, density and bending measurements show that these green bodies are homogeneous and highly densified. After sintering at 1873 K×2 h, the ionic conductivity reaches 0.155 S·cm-1 at 1273 K.
Key words:yttria-stabilized zirconia; thin-substrates; aqueous slurries; ionic conductivity; rare earths;
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