| 고에너지 볼 밀링을 이용한 (K0.44Na0.52)(Nb0.86Ta0.10)-0.04LiSbO3 무연 압전 세라믹스의 특성 |
| 김영혁, 허대영, 태원필, 이재신1 |
(재)울산산업진흥테크노파크 울산정밀화학사업단
1울산대학교 첨단소재공학부 |
| Effects of High Energy Ball Milling on the Piezoelectric Properties of Lead-free (K0.44Na0.52)(Nb0.86Ta0.10)-0.04LiSbO3 Ceramics |
| Young-Hyeok Kim, Dae-Young Heo, Weon-Pil Tai, Jae-Shin Lee1 |
Ulsan Fine Chemical Industry Center
1School of Materials Science and Engineering, University of Ulsan |
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| ABSTRACT |
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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. |
| Key words:
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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