Journal of the Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회논문지)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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Guide for Processing of Textured Piezoelectric Ceramics Through the Template Grain Growth Method

  • Temesgen Tadeyos Zate (Department of Materials Science and Engineering, Ulsan National Institute of Science and Technology (UNIST)) ;
  • Jeong-Woo Sun (Department of Materials Science and Engineering, Ulsan National Institute of Science and Technology (UNIST)) ;
  • Nu-Ri Ko (Department of Materials Science and Engineering, Ulsan National Institute of Science and Technology (UNIST)) ;
  • Hye-Lim Yu (Department of Materials Science and Engineering, Ulsan National Institute of Science and Technology (UNIST)) ;
  • Woo-Jin Choi (Department of Materials Science and Engineering, Ulsan National Institute of Science and Technology (UNIST)) ;
  • Jae-Ho Jeon (Department of Functional Powder Materials, Korea Institute of Materials Science) ;
  • Wook Jo (Department of Materials Science and Engineering, Ulsan National Institute of Science and Technology (UNIST))
  • Received : 2023.05.15
  • Accepted : 2023.05.24
  • Published : 2023.07.01
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Abstract

The templated grain growth (TGG) method has gained significant attention for its ability to produce highly textured piezoelectric ceramics with significantly enhanced performance, making it a promising method for transducer and actuator applications. However, the texturing process using the TGG method requires the optimization of multiple steps, which can be challenging for beginners in this field. Therefore, in this tutorial, we provide an overview of the TGG method mainly based on our previous published works, including its various processing steps such as synthesizing anisotropic-shaped templates with size and size distribution control using the molten salt synthesis technique, tape casting, and identifying key factors for proper alignment of the templates in the target matrix system. Our goal is to provide a resource that can serve as a basic reference for researchers and engineers looking to improve their understanding and utilization of the TGG method for producing textured piezoelectric ceramics.

압전 세라믹스는 전기에너지와 기계에너지를 상호 전환할 수 있는 성질을 기반으로 엑츄에이터 및 트렌스듀서 등에 사용되는 핵심 소재이다. 결정배향 성장법(TGG)은 다결정 세라믹스의 압전 특성을 획기적으로 향상시킬 수 있는 방법으로 많은 주목을 받고 있다. 하지만, TGG 방식을 통해 결정립을 배향하는 과정은 여러 단계의 최적화가 필요하기 때문에 입문자에게는 상당히 도전적인 기술이다. 따라서 이 기고문에서는 입문자의 입장에서 TGG를 가장 쉽게 접근할 수 있도록 납작한 모양의 템플릿을 합성하기 위한 용융염 합성기법 및 실제 결정배향을 위한 Tape Casting 과정 나아가 배향도를 향상시키기 위해 주의할 점에 이르기까지 TGG 전반에 대한 내용을 제공하고자 한다. 본 기고문이 TGG 방법에 대한 이해도를 높이고 활용 및 개선하고자 하는 모든 연구자들에게 정보 및 통찰을 제공할 수 있는 기본 참고서가 되기를 희망한다.

Keywords

Acknowledgement

This research was supported by the Leading Foreign Research Institute Recruitment Program (No.2017K1A4A3015437) through the National Research Foundation of Korea (NRF), funded by the Ministry of Science and ICT and UST Young Scientist Research Program 2021 (2021YS28) through the University of Science and Technology of the Republic of Korea.

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