Preparation of Bi_3.6Ho_0.4Ti₃O₁₂ Ceramics by Hot-Press Sintering

Abstract:

Hot-Press Sintering, a Method that Could Effectively Decrease the Densification Temperature due to the Applied Pressure, Was Employed to Prepare a New Kind of Ho³⁺ Doped Bi₄Ti₃O₁₂ Ceramics, Bi_3.6Ho_0.4Ti₃O₁₂. The Effect of Preparation Parameters on the Crystal Phase, Density and Microstructure of the Ceramics Were Investigated. at First, Single-Phased Bi_3.6Ho0.4Ti3O12 Powders Were Synthesized from Bi2o3, Tio2 and Ho2o3 Raw Powders by Solid-State Reaction and the Optimum Calcined Temperature Should Be 900 °C. The as-Synthesized Powders Were Further Densified at 750-900 °C to Prepare Bi_3.6Ho_0.4Ti₃O₁₂ Ceramics. Dense (relative Density Was 99.4 %) Bi_3.6Ho_0.4Ti₃O₁₂ Ceramics with a Compact Texture Were then Obtained by Hot-Press at 850 °C, about 150-200 °C Lower as Compared with Pressureless Sintering.

• Periodical: Key Engineering Materials (Volume 508)
• Pages: 253-256
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.508.253
• Online since: March 2012
• Authors: Chuan Bin Wang, L. Fu, Qiang Shen, Lian Meng Zhang
• Keywords: Bi_3.6Ho_0.4Ti₃O₁₂ Ceramics, Hot-Press, Solid-State Reaction

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