Title of Paper:Micro-stereolithography of KNN-based lead-free piezoceramics

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Affiliation of Author(s):航空学院

Journal:Ceram Int

Abstract:The additive manufacturing technique of micro-stereolithography (µSL) is applied to fabricate alkaline niobate (K0.48Na0.52NbO3 KNN) based lead-free piezoceramics. Complex KNN-based piezoceramic green parts with fine dimensional characteristics, such as a piezoceramic transducer array and a hollow hemisphere, have been printed. The two-step debinding and sintering processes are employed to obtain crack-free dense KNN ceramics with complex shapes. These printed KNN ceramics exhibit superior piezoelectric and ferroelectric performance (Εr = 2150, d33 = 170 pC/N, Pr = 12.1 μC/cm2, EC = 6.1 kV/cm, and TC = 230 °C), which are comparable to those of KNN piezoceramics made by traditional methods. These results suggest that the µSL technique may serve as an alternative method to manufacture KNN lead-free piezoceramic components, especially for the application with complex architectures. © 2018 Elsevier Ltd and Techna Group S.r.l.

ISSN No.:0272-8842

Translation or Not:no

Date of Publication:2019-03-01

Co-author:Chen, Weicen,Wang, Fangfang,Zhang, Yuanhao,Dawei Wu

Correspondence Author:Kang Yan