Grain Plastic Rearrangement for Fabricating Textured CaBi2Nb2O9-Based Ceramics with Superior Piezoelectricity.

IF 8.2 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

ACS Applied Materials & Interfaces Pub Date : 2025-10-20 DOI:10.1021/acsami.5c13481

Wei Shi,Ning Chen,Qi Hu,Shangyi Guan,Liang Xu,Jie Xing,Zhi Tan,Qiang Chen

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引用次数: 0

Abstract

Bismuth layer-structured ferroelectrics (BLSFs) play an important role in high-temperature piezoelectric applications due to their high Curie temperature (TC) and excellent fatigue-resistant performance, while they have long faced the problem of insufficient piezoelectric properties. The phenomenological orientational average theory demonstrates that the [100]-oriented CaBi2N2O9 (CBN) ceramics can improve d33 of conventional ceramics by 77% via utilizing their strong in-plane piezoelectric response. Building on this finding, a seed-free hot forging technique is proposed to fabricate [100]-oriented textured CBN-based ceramics via grain plastic rearrangement at high temperatures. This method yields a textured CBN-based ceramic with a superior d33 of 26.7 pC/N, which is 53% higher than the standard ones. Remarkably, the d33 of textured CBN-based ceramics remains at 25.7 pC/N even after annealing at 900 °C. Our seed-free hot forging technique, which eliminates the need for grain templates, is significantly simpler than traditional template grain growth methods and holds significant potential for application across various BLSF ceramics. This work presents a cost-effective and straightforward approach to producing high-performance textured BLSF ceramics, marking a significant step forward in the development of high-temperature piezoelectric applications.

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晶粒塑性重排制备具有优异压电性的cabi2nb2o9基织构陶瓷。

铋层结构铁电体（BLSFs）由于具有较高的居里温度（TC）和优异的抗疲劳性能，在高温压电应用中发挥着重要作用，但长期以来一直面临着压电性能不足的问题。现象学取向平均理论表明，[100]取向CaBi2N2O9 （CBN）陶瓷利用其强大的面内压电响应，可以将传统陶瓷的d33提高77%。基于这一发现，提出了一种无种子热锻造技术，通过高温下的颗粒塑性重排来制造[100]定向织构cbn基陶瓷。该方法制备的cbn基织构陶瓷的d33为26.7 pC/N，比标准陶瓷高53%。值得注意的是，在900℃退火后，织构cbn基陶瓷的d33仍保持在25.7 pC/N。我们的无种子热锻造技术消除了对晶粒模板的需求，比传统的模板晶粒生长方法简单得多，在各种BLSF陶瓷中具有巨大的应用潜力。这项工作提出了一种成本效益高且直接的方法来生产高性能纹理BLSF陶瓷，标志着高温压电应用的发展向前迈出了重要的一步。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

ACS Applied Materials & Interfaces 工程技术-材料科学：综合

CiteScore

16.00

自引率

6.30%

发文量

4978

审稿时长

1.8 months

期刊介绍： ACS Applied Materials & Interfaces is a leading interdisciplinary journal that brings together chemists, engineers, physicists, and biologists to explore the development and utilization of newly-discovered materials and interfacial processes for specific applications. Our journal has experienced remarkable growth since its establishment in 2009, both in terms of the number of articles published and the impact of the research showcased. We are proud to foster a truly global community, with the majority of published articles originating from outside the United States, reflecting the rapid growth of applied research worldwide.