Preparation Of High Temperature Proton Conductor Tube CaZr0.9In0.1O3-α  And Its Properties

Acta Metall Sin

2008, Vol. 44

Issue (2): 177-182 DOI:

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Preparation Of High Temperature Proton Conductor Tube CaZr0.9In0.1O3-α And Its Properties

东北大学

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. Preparation Of High Temperature Proton Conductor Tube CaZr0.9In0.1O3-α And Its Properties. Acta Metall Sin, 2008, 44(2): 177-182 .

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Abstract High temperature proton conducotor CaZr0.9In0.1O3-α was prepared by direct synthesis method, and the average grain diameter of the powder was 1.88μm. Hot pressure casting method was used for preparing the tube, whose density was 97.44% relative to theoretical density. SEM fracture analysis showed the grain size was 1～3μm. EDS and XRF showed that the material had In elelment lost after sintered. This is because In2O3 sublimed and decomposed when temperature was higher than 1200℃. The conductivity of CaZr0.9In0.1O3-α was 0.91×10-4～1.21×10-2 S•cm-1 at the temperature range of 931～1300K in air. The value was a little small than the value in H2 and larger than the value of CaZr0.97In0.03O3-α in air in the literature. This was corresponded with theoretical conjecture.

Key words: CaZrO3 doped CaZr0.9In0.1O3-α AC impedance spectroscopy high temperature proton conductor

Received: 28 March 2007

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