Fabrication of BiScO3–PbTiO3/epoxy 1–3 piezoelectric composites for high-temperature transducer applications

IF 3.5 3区材料科学 Q1 MATERIALS SCIENCE, CERAMICS Journal of the American Ceramic Society Pub Date : 2024-09-19 DOI:10.1111/jace.20139

Liqing Hu, Ruoqi Jin, Chenyu Qiu, Xiaodan Ren, Sanhong Wang, Zhuo Xu, Hua Tian, Xiaotian Li, Yongke Yan

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Abstract

1–3 piezoelectric composites are widely used in piezoelectric ultrasonic transducers due to their high thickness electromechanical coupling factor. However, the applications of the composites in high-temperature fields are limited by the low heat resistance of both the piezoelectric and polymer phases. To tackle this, we designed and fabricated the BiScO₃–PbTiO₃/epoxy high-temperature 1–3 piezoelectric composites. These composites exhibit a high thickness electromechanical coupling factor k_t of 63%, a large piezoelectric coefficient d₃₃ of 470 pC/N, and a pure thickness vibration mode. Furthermore, we fabricated a high-temperature transducer based on the BiScO₃–PbTiO₃/epoxy 1–3 composites. The bandwidths of the composites measured in water and silicone oil (30% and 23%, respectively) are approximately 1.65 times greater than those of monolithic piezoelectric ceramics (18% and 14%, respectively). The bandwidth of the transducer can be increased to 78% by adding a porous alumina backing layer, with the working temperature reaching up to 300°C. The results indicate that the BS–PT/epoxy 1–3 composite is a potential candidate for high-temperature transducer applications.

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制备用于高温传感器应用的 BiScO3-PbTiO3/epoxy 1-3 压电复合材料

1-3 压电复合材料因其厚度机电耦合系数高而广泛应用于压电超声波传感器。然而，由于压电相和聚合物相的耐热性较低，这种复合材料在高温领域的应用受到了限制。为了解决这个问题，我们设计并制造了 BiScO3-PbTiO3/epoxy 高温 1-3 压电复合材料。这些复合材料的厚度机电耦合系数 kt 高达 63%，压电系数 d33 高达 470 pC/N，并且具有纯厚度振动模式。此外，我们还基于 BiScO3-PbTiO3/epoxy 1-3 复合材料制作了高温传感器。在水和硅油中测得的复合材料带宽（分别为 30% 和 23%）是单片压电陶瓷带宽（分别为 18% 和 14%）的约 1.65 倍。通过添加多孔氧化铝背层，传感器的带宽可提高到 78%，工作温度可达 300°C。结果表明，BS-PT/环氧 1-3 复合材料是高温传感器应用的潜在候选材料。

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来源期刊

Journal of the American Ceramic Society 工程技术-材料科学：硅酸盐

CiteScore

7.50

自引率

7.70%

发文量

590

审稿时长

2.1 months

期刊介绍： The Journal of the American Ceramic Society contains records of original research that provide insight into or describe the science of ceramic and glass materials and composites based on ceramics and glasses. These papers include reports on discovery, characterization, and analysis of new inorganic, non-metallic materials; synthesis methods; phase relationships; processing approaches; microstructure-property relationships; and functionalities. Of great interest are works that support understanding founded on fundamental principles using experimental, theoretical, or computational methods or combinations of those approaches. All the published papers must be of enduring value and relevant to the science of ceramics and glasses or composites based on those materials. Papers on fundamental ceramic and glass science are welcome including those in the following areas: Enabling materials for grand challenges[...] Materials design, selection, synthesis and processing methods[...] Characterization of compositions, structures, defects, and properties along with new methods [...] Mechanisms, Theory, Modeling, and Simulation[...] JACerS accepts submissions of full-length Articles reporting original research, in-depth Feature Articles, Reviews of the state-of-the-art with compelling analysis, and Rapid Communications which are short papers with sufficient novelty or impact to justify swift publication.