Improving the Oxygen Permeability of Ba0.5Sr0.5Co0.8Fe0.2O3-δ Membranes by Laser Ablation

doi:10.3724/SP.J.1077.2009.09474

Abstract

Abstract: The surfaces of Ba_0.5Sr_0.5Co_0.8Fe_0.2O_3-δ(BSCFO) membranes were decorated by laser ablation treatment in order to increase the specific surface of the membrane surface, and laser ablation treatment could improve the ability of oxygen surface exchange and enhance the oxygen permeation flux of the membranes. The arc shape stripes with width about 150µm and depth about 25µm increase the specific surface of the membrane surface significantly, which were made by laser ablation treatment. XRD patterns show that the BSCFO phase structure is kept after laser ablation treatment. The oxygen permeation fluxes through the membranes after laser ablation treatment are enhanced, and laser ablation treatment with cross stripes pattern on both sides of the membranes has a signification impact on the oxygen permeation flux. The oxygen permeation flux through the membrane with cross stripes pattern on both sides is 34% higher than that through membranes without laser ablation treatment.

Key words: oxygen permeation membrane, laser ablation, specific surface, oxygen permeation flux

CLC Number:

TQ174

SHEN Zi-Gang,LU Peng-Xian,HU Xing. Improving the Oxygen Permeability of Ba_0.5Sr_0.5Co_0.8Fe_0.2O_3-δ Membranes by Laser Ablation[J]. Journal of Inorganic Materials, DOI: 10.3724/SP.J.1077.2009.09474.

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Improving the Oxygen Permeability of Ba_0.5Sr_0.5Co_0.8Fe_0.2O_3-δ Membranes by Laser Ablation

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