通过调整烧结过程中的停留时间来优化0.7BiFeCo0.004O3-0.3BaTiO3陶瓷的压电性能

IF 5.1 2区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Ceramics International Pub Date : 2025-06-01 DOI:10.1016/j.ceramint.2025.02.153

Yunkai Wu , Xin Nie , Yina Zheng , Jinyu Chen , Chao Chen , Yunjing Chen , Wenning Di , Siyi Zhou , Xiangping Jiang

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引用次数: 0

摘要

烧结工艺对材料的性能有重要影响。在本研究中，通过不同的停留时间（3h、30h、60h、90h），成功合成了0.7 bife0.996 co0.0040 o3 -0.3 batio3陶瓷。系统地研究了保温时间对相、晶粒形貌、畴结构和电性能的影响。结果表明：延长保温时间有利于晶粒长大，并使菱形相的含量略有增加；铁电畴尺寸的增大提高了材料的压电性能。这些改进有助于提高压电系数（d33）和剩余极化（Pr），同时保持较高的居里温度。其中，d33和Pr从191 pC/N和25.6 μC/cm2 （t = 3h）增加到198 pC/N和28.7 μC/cm2 （t = 30h）。此外，原位机电分析表明，延长停留时间提高了退极化温度（Td = 480℃），提高了压电陶瓷的温度稳定性。

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Optimization of piezoelectric properties of 0.7BiFeCo0.004O3-0.3BaTiO3 ceramics by adjusting dwell time during the sintering process

Sintering process has an important influence on the properties of materials. In this study, 0.7BiFe_0.996Co_0.004O₃-0.3BaTiO₃ ceramics were successfully synthesized with different dwell times (3h, 30h, 60h, 90h). The effect of dwell time on phase, grain morphology, domain structure and electrical properties was systematically investigated. The results show that prolonged dwell time promotes grain growth and slightly increases the content of rhombohedral phase. The increase in ferroelectric domain size enhances the piezoelectric property. These improvements help increase the piezoelectric coefficient (d₃₃) and remanent polarization (P_r) while maintaining a high Curie temperature. Specifically, d₃₃ and P_r increase from 191 pC/N and 25.6 μC/cm² (t = 3h) to 198 pC/N and 28.7 μC/cm² (t = 30h). Additionally, in-situ electromechanical analysis shows that an extended dwell time raises the depolarization temperature (T_d = 480 °C), improving the temperature stability of the piezoelectric ceramics.

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来源期刊

Ceramics International 工程技术-材料科学：硅酸盐

CiteScore

9.40

自引率

15.40%

发文量

4558

审稿时长

25 days

期刊介绍： Ceramics International covers the science of advanced ceramic materials. The journal encourages contributions that demonstrate how an understanding of the basic chemical and physical phenomena may direct materials design and stimulate ideas for new or improved processing techniques, in order to obtain materials with desired structural features and properties. Ceramics International covers oxide and non-oxide ceramics, functional glasses, glass ceramics, amorphous inorganic non-metallic materials (and their combinations with metal and organic materials), in the form of particulates, dense or porous bodies, thin/thick films and laminated, graded and composite structures. Process related topics such as ceramic-ceramic joints or joining ceramics with dissimilar materials, as well as surface finishing and conditioning are also covered. Besides traditional processing techniques, manufacturing routes of interest include innovative procedures benefiting from externally applied stresses, electromagnetic fields and energetic beams, as well as top-down and self-assembly nanotechnology approaches. In addition, the journal welcomes submissions on bio-inspired and bio-enabled materials designs, experimentally validated multi scale modelling and simulation for materials design, and the use of the most advanced chemical and physical characterization techniques of structure, properties and behaviour. Technologically relevant low-dimensional systems are a particular focus of Ceramics International. These include 0, 1 and 2-D nanomaterials (also covering CNTs, graphene and related materials, and diamond-like carbons), their nanocomposites, as well as nano-hybrids and hierarchical multifunctional nanostructures that might integrate molecular, biological and electronic components.