Microstructure and Property Study of La2Mo1.5W0.5O9/Ag Composites

Chun Li; Da Li; Qian Feng Fang

doi:10.4028/www.scientific.net/MSF.663-665.620

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HomeMaterials Science ForumMaterials Science Forum Vols. 663-665Microstructure and Property Study of...

Microstructure and Property Study of La₂Mo_1.5W_0.5O₉/Ag Composites

Abstract:

Based on the oxygen ion conductor La2Mo1.5W0.5O9, a series of Ag2O doped samples La2Mo1.5W0.5O9/Ag were prepared with conventional solid-state reaction method. The effects of Ag2O doping on the microstructure and electrical conductivity have been investigated by XRD, FESEM and direct current conductivity measurements. With the increase of Ag2O doping, the grain was further refined and compacted, meanwhile, Ag diffusion distribution in the form of second-phase appear at grain boundary. The sample density and conductivity also gradually increased with the increasing of doping amount. The conductivity of the composite specimen La2Mo1.5W0.5O9 /Ag has a great enhancement when the concentration of Ag2O is around 27 wt%, which is eight times higher than that of the single-phase sample.

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Materials Science Forum (Volumes 663-665)

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620-624

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https://doi.org/10.4028/www.scientific.net/MSF.663-665.620

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Online since:

November 2010

Authors:

Chun Li, Da Li, Qian Feng Fang

Keywords:

Ag₂O, Conductivity, La₂Mo₂O₉

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