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Study on Polarization of Lead-free Piezoelectric Ceramics For 0.98Na_(0.5)Bi_(0.5)TiO_3-0.02NaNbO_3

Liang Li-peng

Abstract

Since polarization has remarkable effect on the strain capacity and 90°domain-rotation rate of the piezoelectric ceramics,thus affecting the performance of its piezoelectric,the poling technique of 0.98Na0.5Bi0.5TiO3-0.02NaNbO3 piezoelectric ceramics was studied.The results shows that the piezoelectric properties of 0.98Na0.5Bi0.5TiO3-0.02NaNbO3 piezoelectric ceramics has remarkable improved when the poling electric field was 4kV/mm,the poling temperature was 120℃ and the poling time was 25min.

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Available abstract

Key concepts: Poling, Piezoelectricity, Materials science, Ceramic, Polarization (electrochemistry), Composite material, Electric field, Piezoelectric coefficient