Work

Textured K0.5Na0.5NbO3 piezoelectric ceramics produced by vat photopolymerization-based additive manufacturing

Year: 2025

Type: article

Abstract: Texturing of lead-free piezoelectric K 0.5 Na 0.5 NbO 3 (KNN) has gained significant interest due to increased piezoelectric response along 〈100〉 pc directions. However, conventional processing methods used for texturing are limited to simple geometries. Additive manufacturing (AM), commonly referred to as 3D printing, presents a promising alternative, capable of producing intricate shapes with enhanced electromechanical properties and extended functionalities that are difficult or impossible to achieve through traditional methods. This study establishes the fabrication of textured KNN ceramics using blade-assisted bottom-up vat photopolymerization (VPP)-based AM in conjunction with heteroepitaxial templated grain growth. The textured KNN fabricated via VPP demonstrates a strong 〈100〉 pc texture with a Lotgering factor of 96%, comparable to what is commonly obtained by conventional tape casting and close to the highest Lotgering factor reported for any ceramics textured through AM. The piezoelectric performance of the textured KNN sample produced through VPP shows a 77% increase compared to untextured KNN.

Source: Journal of the European Ceramic Society

DOI: 10.1016/j.jeurceramsoc.2025.117776

Authors: Mahmoud Mobin, Oleg V. Mishin, Cenk Abdurrahmanoglu, Vincenzo Esposito, Astri Bjørnetun Haugen

Institution: Technical University of Denmark

Language: English

Topic: Ferroelectric and Piezoelectric Materials

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

SDG: Industry, innovation and infrastructure

Open Access status: hybrid

Estimated APC paid: $3,900