Abstract
Lead-free (K 0.44 Na 0.52 )(Nb 0.86 Ta 0.10 )-0.04LiSbO₃ 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 (kp) and piezoelectric constant (d 33 ) of a specimen sintered at 1050℃ are 0.44 and 267 pC/N, respectively.
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