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http://dx.doi.org/10.4191/KCERS.2008.45.6.363

Effects of High Energy Ball Milling on the Piezoelectric Properties of Lead-free (K0.44Na0.52)(Nb0.86Ta0.10)-0.04LiSbO3 Ceramics  

Kim, Young-Hyeok (Ulsan Fine Chemical Industry Center)
Heo, Dae-Young (Ulsan Fine Chemical Industry Center)
Tai, Weon-Pil (Ulsan Fine Chemical Industry Center)
Lee, Jae-Shin (School of Materials Science and Engineering, University of Ulsan)
Publication Information
Journal of the Korean Ceramic Society / v.45, no.6, 2008 , pp. 363-367 More about this Journal
Abstract
Lead-free $(K_{0.44}Na_{0.52})(Nb_{0.86}Ta_{0.10})-0.04LiSbO_3$ piezoelectric ceramics have been synthesized by conventional sintering process and then investigated on the sintering and piezoelectric properties by high energy ball milling (HEBM) treatment. The powders milled for different time are characterized by XRD, FE-SEM. The powders are pressed into a pellet and sintered. It is found that the piezoelectric properties of sintered specimens are strongly dependent on the milling time. The piezoelectric properties are enhanced by high energy ball milling treatment. The planer electromechanical coupling factor ($k_p$) and piezoelectric constant ($d_{33}$) of a specimen sintered at $1050^{\circ}C$ are 0.44 and 267 pC/N, respectively.
Keywords
Lead-free; High energy ball milling$(K_{0.44}Na_{0.52})(Nb_{0.86}Ta_{0.10})-0.04LiSbO_3$;
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