Composite Scheme for Deferred Thermal Depolarization of Lead-Free Bi0.5Na0.5TiO3-Based Piezoelectric Ceramics
Huashan Zheng,
Enwei Sun,
Huajie Luo
et al.
Abstract:The relatively low thermal depolarization temperature (T d ) has hindered the development and practical application of lead-free Bi 0.5 Na 0.5 TiO 3 -based systems; therefore, a feasible strategy is urgently needed to defer the depolarization behavior. In this work, a perovskite/metal 0.78 Bi 0.5 Na 0.5 TiO 3 −0.22 Bi 0.5 K 0.5 TiO 3 /xAg (BNT−22BKT/xAg) composite ceramic is designed and successfully prepared. The introduction of metal Ag with a larger thermal expansion coefficient leads to an increased fracti… Show more
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