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Single-calcination synthesis mechanism of pure-perovskite Pb(Ni 1/3Nb2/3)O3-PbTiO3 using a coating method

  • CAS - Shanghai Institute of Ceramics
  • National Institute of Advanced Industrial Science and Technology

科研成果: 期刊稿件文章同行评审

摘要

Pure-perovskite 0.64Pb(N1/3Nb2/3)O 3-0.36PbTiO3 (PNN-PT) powder has been successfully synthesized by only one-step calcination using a coating method. SEM photograph shows that PNN-PT powder with the size of 2-4 μm is cubic and well dispersed. Based on X-ray diffraction analysis, solid-state reactions in the process of calcination in PbO-Nb2O5-TiO2-NiO system are investigated. In comparison with conventional solid state method, the single-calcination synthesis mechanism of pyrochlore-free lead-based niobate ferroelectrics using a coating method is tentatively proposed. A typical coating structure of Ni precipitate-coated Nb2O5 powder facilitates the formation of perovskite PNN-PT phase at a relatively low calcination temperature, resulting in the successful synthesis of pyrochlore-free PNN-PT powder in one-step calcination at 900°C.

源语言英语
页(从-至)239-242
页数4
期刊Journal of the American Ceramic Society
88
1
DOI
出版状态已出版 - 1月 2005
已对外发布

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