Influence of sintering methods on microstructure and ionic conductivity of La1.95Sr0.05Zr2O6.975 synthesized by co-precipitation - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Solid State Ionics Année : 2015

Influence of sintering methods on microstructure and ionic conductivity of La1.95Sr0.05Zr2O6.975 synthesized by co-precipitation

Résumé

We present here the synthesis of Sr-doped lanthanumzirconate pyrochlores La1.95Sr0.05Zr2O6.975with controlled grain sizes and we compare different methods of sintering. Pyrochlores are systems where it is hard to achieve high density without a significant coarsening of the sample microstructure. It is shown that the use of Spark Plasma Sintering (SPS) can produce high density ceramic samples while maintaining a nanometric grain size, a key factor for enhancing electrical and mechanical properties. Furthermore, ionic conductivity is found higher in samples sintered using SPS than in those produced by hot pressing.

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Chimie
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hal-01187785 , version 1 (01-12-2015)

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Da Huo, Dominique Gosset, David Siméone, Gianguido Baldinozzi, Hicham Khodja, et al.. Influence of sintering methods on microstructure and ionic conductivity of La1.95Sr0.05Zr2O6.975 synthesized by co-precipitation. Solid State Ionics, 2015, 278, pp.181-185. ⟨10.1016/j.ssi.2015.05.028⟩. ⟨hal-01187785⟩
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