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Crystallization of Spherical Dielectric Oxide Particles in a Melting-Spheroidization Process Using Chemical Flame

机译:用化学火焰结晶球形介电氧化物颗粒在熔融球化过程中的结晶

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BaNd{sub}2Ti{sub}4O{sub}12 dielectric oxide particles were spheroidized by melting them with a LPG-O{sub}2 flame to improve packing and fluidity of the powder. Changes in the particle morphology, structure and crystallinity during the process were investigated. It is revealed that most of the as-melted particles are dense, spherical and amorphous with smooth surfaces, which crystallize in the annealing process to form polycrystalline spherical particles with uneven surfaces. Annealing at above 1100°C is necessary for the spheroidized powder to recover its crystallinity and dielectric properties.
机译:频带{sub} 2Ti {sub} 40 {sub} 12通过用LPG-O} 2火焰熔化它们以改善粉末的填充和流动性来球化介电氧化物颗粒。研究了过程中颗粒形态,结构和结晶度的变化。揭示大多数以熔化的颗粒是致密的,球形和无定形的,具有光滑表面,其在退火过程中结晶以形成具有不均匀表面的多晶球形颗粒。对于球化粉末,在1100°C上的退火是恢复其结晶度和电介质性质所必需的。

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