Densification Mechanism of Antimony-Doped Tin Oxide Ceramics by Spark Plasma Sintering

Qi Zhong Li; Qi Chang Li

doi:10.4028/www.scientific.net/AMR.1058.196

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 1058Densification Mechanism of Antimony-Doped Tin...

Densification Mechanism of Antimony-Doped Tin Oxide Ceramics by Spark Plasma Sintering

Abstract:

SnO₂ ceramics were synthesized by SPS. Phase compositions and microstructures are examined by XRD, SEM and EDS, respectively. Sb₂O₃ used in our research were beneficial to lower the sintering temperature and promote the densification of SnO₂ ceramics. The SEM results show a homogeneous microstructure is approached consistent with the density measurement at 850-1000 °C. The XRD show all antimony ions came into the lattice of SnO₂ to substitute for tin ions when the content of Sb₂O₃ are 0.1-2.5 mol%. The grain boundary are no SnO and Sb₂O₃, only SnO₂. The mechanism of SPS sintering process is the local high temperature to produce the abnormal growth of the grain, and evaporation-condensation; and solid solution of Sb³⁺ go into the SnO₂ lattice produce oxygen vacancy to promote densification

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Periodical:

Advanced Materials Research (Volume 1058)

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196-199

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https://doi.org/10.4028/www.scientific.net/AMR.1058.196

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Online since:

November 2014

Authors:

Qi Zhong Li, Qi Chang Li*

Keywords:

Ceramic, Sb-Doped, SnO₂, SPS, XRD

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