Synthesis of Nanocrystalline BaTiO3 Powder by the Combination of High Energy Ball Milling of BaCO3-TiO2 Mixture and Solid-State Reaction

Sung-Soo Ryu

doi:10.4150/KPMI.2012.19.4.310

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Page Path: HOME > J Korean Powder Metall Inst > Volume 19(4); 2012 > Article

고에너지 볼밀링된 BaCO₃와 TiO₂ 혼합분말의 고상반응에 의한 나노결정 BaTiO₃ 분말 합성: 류성수
Synthesis of Nanocrystalline BaTiO₃ Powder by the Combination of High Energy Ball Milling of BaCO₃-TiO₂ Mixture and Solid-State Reaction: Sung-Soo Ryu; Journal of Korean Powder Metallurgy Institute 2012;19(4):310-316
DOI: https://doi.org/10.4150/KPMI.2012.19.4.310

한국세라믹기술원 엔지니어링세라믹센터
Engineering Ceramics Center, Korea Institute of Ceramic Engineering and Technology

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Abstract

Nanocrystalline BaTiO_3 powder could be synthesized by solid-state reaction using the mixture which was prepared by a high energy milling process in a bead mill for BaCO_3 and nanocrystalline TiO_2 powders mixture. Effect of the milling time on the powder characteristic of the synthesized BaTiO_3 powder was investigated. Nanocrystalline BaTiO_3 with a particle size of 50 nm was obtained at 800°C. High tetragonal BaTiO_3 powder with a tetragonality(=c/a) of 1.009 and a specific surface area of 7.6m2/g was acquired after heat-treatment at 950°C for 2 h. High energy ball milling was effective in decreasing the reaction temperature and increasing the tetragonality.

Keywords: BaTiO_3;Solid-state reaction;nanocrytalline;a high energy ball milling;

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