Enhanced mechanical and ferroelectric properties through grain size refinement in site specific substituted lead free Na_0.5−xK_xBi_0.5TiO₃ (x = 0-0.10) ceramics

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• 作者：T. Karthik ; Saket Asthana ; ^{asthanas@iith.ac.in}
• 关键词：Microstructure ; Ferroelectrics ; Hardness ; Sintering
• 刊名：Materials Letters
• 出版年：2017
• 出版时间：1 March 2017
• 年：2017
• 卷：190
• 期：Complete
• 页码：273-275
• 全文大小：1211 K
• 卷排序：190

文摘

The K-ion, as a grain growth inhibitor reduced the grain size by 13-fold in NKBT-10. The maximum softening of ∼43% in EC for NKBT-10 with respect to NBT is reported. An invariable variation in Pr with K-ion which is useful for possible applications. Vickers hardness of ∼10.2 GPa (∼50% higher than NBT) is observed for NKBT-10. The hardness value is even higher than lead based piezo-ceramics such as PZT and PLZT.