{"title":"微波烧结 CaBi2Nb2O9 陶瓷以改善压电响应和电阻率","authors":"Ceng Zhang, Hongcai Yu, Jing Sun, Zhuojian Wang, Gongtian Chen, Zhenli Lan, Jianing Wang, Shaoqing Xu, Zhiyong Zhou, Jiawang Hong, Hao Li, Bin Yang","doi":"10.1111/jace.19986","DOIUrl":null,"url":null,"abstract":"<p>CaBi<sub>2</sub>Nb<sub>2</sub>O<sub>9</sub> (CBN) ceramic is a promising sensing element to convert vibration to electrical signal at temperatures higher than 600°C. However, conventionally sintered ceramics suffer from poor piezoelectric coefficient (<i>d</i><sub>33</sub>) and low electrical resistivity (<i>ρ</i><sub>dc</sub>). Here, we report that CBN ceramics can be prepared by microwave sintering (MS) to mitigate volatilization issue of Bi<sub>2</sub>O<sub>3</sub> and thus suppress the generation of oxygen vacancies usually seen in conventional sintering (CS) as demonstrated by X-ray photoelectron spectroscopy (XPS) analysis and mass-loss measurement. As compared to the CS, the MS is more favorable for reducing the sintering time, and obtaining a dense, fine, and uniform grain morphology as revealed by scanning electron microscopy (SEM) characterizations of both surface and interior of the CBN ceramics, leading to an enhancement of 86% and 75% in <i>d</i><sub>33</sub> and <i>ρ</i><sub>dc</sub>, respectively. Piezoresponse force microscopy (PFM) as combined with Rayleigh law analysis clearly revealed that the enhancement of piezoelectric properties was attributed to the thinner domains, the higher domain wall density, and the enhanced domain wall motion in the MS-940 samples. This study paves an important road to simultaneously improve both <i>d</i><sub>33</sub> and <i>ρ</i><sub>dc</sub> in CBN ceramics for developing high-temperature vibration sensors.</p>","PeriodicalId":200,"journal":{"name":"Journal of the American Ceramic Society","volume":null,"pages":null},"PeriodicalIF":3.5000,"publicationDate":"2024-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Microwave sintering of CaBi2Nb2O9 ceramics for improved piezoelectric response and electrical resistivity\",\"authors\":\"Ceng Zhang, Hongcai Yu, Jing Sun, Zhuojian Wang, Gongtian Chen, Zhenli Lan, Jianing Wang, Shaoqing Xu, Zhiyong Zhou, Jiawang Hong, Hao Li, Bin Yang\",\"doi\":\"10.1111/jace.19986\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>CaBi<sub>2</sub>Nb<sub>2</sub>O<sub>9</sub> (CBN) ceramic is a promising sensing element to convert vibration to electrical signal at temperatures higher than 600°C. However, conventionally sintered ceramics suffer from poor piezoelectric coefficient (<i>d</i><sub>33</sub>) and low electrical resistivity (<i>ρ</i><sub>dc</sub>). Here, we report that CBN ceramics can be prepared by microwave sintering (MS) to mitigate volatilization issue of Bi<sub>2</sub>O<sub>3</sub> and thus suppress the generation of oxygen vacancies usually seen in conventional sintering (CS) as demonstrated by X-ray photoelectron spectroscopy (XPS) analysis and mass-loss measurement. As compared to the CS, the MS is more favorable for reducing the sintering time, and obtaining a dense, fine, and uniform grain morphology as revealed by scanning electron microscopy (SEM) characterizations of both surface and interior of the CBN ceramics, leading to an enhancement of 86% and 75% in <i>d</i><sub>33</sub> and <i>ρ</i><sub>dc</sub>, respectively. Piezoresponse force microscopy (PFM) as combined with Rayleigh law analysis clearly revealed that the enhancement of piezoelectric properties was attributed to the thinner domains, the higher domain wall density, and the enhanced domain wall motion in the MS-940 samples. This study paves an important road to simultaneously improve both <i>d</i><sub>33</sub> and <i>ρ</i><sub>dc</sub> in CBN ceramics for developing high-temperature vibration sensors.</p>\",\"PeriodicalId\":200,\"journal\":{\"name\":\"Journal of the American Ceramic Society\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":3.5000,\"publicationDate\":\"2024-07-04\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of the American Ceramic Society\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://onlinelibrary.wiley.com/doi/10.1111/jace.19986\",\"RegionNum\":3,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"MATERIALS SCIENCE, CERAMICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of the American Ceramic Society","FirstCategoryId":"88","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1111/jace.19986","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, CERAMICS","Score":null,"Total":0}
Microwave sintering of CaBi2Nb2O9 ceramics for improved piezoelectric response and electrical resistivity
CaBi2Nb2O9 (CBN) ceramic is a promising sensing element to convert vibration to electrical signal at temperatures higher than 600°C. However, conventionally sintered ceramics suffer from poor piezoelectric coefficient (d33) and low electrical resistivity (ρdc). Here, we report that CBN ceramics can be prepared by microwave sintering (MS) to mitigate volatilization issue of Bi2O3 and thus suppress the generation of oxygen vacancies usually seen in conventional sintering (CS) as demonstrated by X-ray photoelectron spectroscopy (XPS) analysis and mass-loss measurement. As compared to the CS, the MS is more favorable for reducing the sintering time, and obtaining a dense, fine, and uniform grain morphology as revealed by scanning electron microscopy (SEM) characterizations of both surface and interior of the CBN ceramics, leading to an enhancement of 86% and 75% in d33 and ρdc, respectively. Piezoresponse force microscopy (PFM) as combined with Rayleigh law analysis clearly revealed that the enhancement of piezoelectric properties was attributed to the thinner domains, the higher domain wall density, and the enhanced domain wall motion in the MS-940 samples. This study paves an important road to simultaneously improve both d33 and ρdc in CBN ceramics for developing high-temperature vibration sensors.
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.
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