Preparation and thermal/dielectric properties of medium/high entropy perovskite titanate ceramics
文献类型：期刊论文
| 作者 | Zhang, Jingying1; Tian, Jindan1; Xing, Bohang1; Wang, Jiemin2; Liu, Bin3; Nian, Hongqiang1; Zhao, Zhe1,4 |
| 刊名 | CERAMICS INTERNATIONAL
 |
| 出版日期 | 2024-09-01 |
| 卷号 | 50期号:17页码:29954-29965 |
| 关键词 | High-entropy Perovskite structure Dielectric properties Thermal properties |
| ISSN号 | 0272-8842 |
| DOI | 10.1016/j.ceramint.2024.05.291 |
| 通讯作者 | Nian, Hongqiang(hqnian@sit.edu.cn) ; Zhao, Zhe() |
| 英文摘要 | High -entropy ceramics have garnered significant attention in recent years owing to their exceptional properties and structural diversity. In this work, single-phase medium/high entropy ceramics, namely (Ca0.2Sr0.4Ba0.4) (Zr0.5Ti0.5)O3 and (Ca0.2Sr0.4Ba0.4)(Zr0.1Ti0.9)O3, were successfully designed and prepared utilizing Spark Plasma Sintering (SPS). A comprehensive investigation was conducted into the phase structure, microscopic morphology, dielectric properties, and thermal behavior of these ceramics. It was observed that all ceramics maintained a cubic perovskite structure (space group: Pm 3 m), and the introduction of multi -element doping rendered them more stable across a wide frequency and temperature range. Notably, (Ca0.2Sr0.4Ba0.4)(Zr0.5Ti0.5) O3 exhibited remarkably low dielectric loss (0.0001 at 1 kHz) at room temperature, along with excellent dielectric temperature stability (25-400 degrees C). By reducing the zirconium concentration in (Ca0.2Sr0.4Ba0.4) (Zr0.1Ti0.9)O3, a slight decrease in dielectric temperature stability was observed (25-350 degrees C); however, it demonstrated lower thermal conductivity (0.41 W/(m center dot K), 1200 degrees C) and maintained good high -temperature stability. The discovery highlights the promising practicality of both ceramics for high -temperature dielectric applications. |
| 资助项目 | National Key R & D Program of China[2021YFB3702300] ; National Natural Science Foundation of China[52172071] ; Key Research and Development Projects in Zhejiang Province[2022C01186] ; Leading Entrepreneurial Team Projects in Zhejiang Province[2021R02016] |
| WOS研究方向 | Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:001261188200001 |
| 出版者 | ELSEVIER SCI LTD |
| 资助机构 | National Key R & D Program of China ; National Natural Science Foundation of China ; Key Research and Development Projects in Zhejiang Province ; Leading Entrepreneurial Team Projects in Zhejiang Province |
| 源URL |  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Nian, Hongqiang; Zhao, Zhe |
| 作者单位 | 1.Shanghai Inst Technol, Sch Mat Sci & Engn, Shanghai, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Adv Ceram & Composites Div, Shenyang, Peoples R China 3.Shanghai Univ, Sch Mat Sci & Engn, Shanghai, Peoples R China 4.Jiaxing CeramPlus Technol Co Ltd, Jiaxing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Jingying,Tian, Jindan,Xing, Bohang,et al. Preparation and thermal/dielectric properties of medium/high entropy perovskite titanate ceramics[J]. CERAMICS INTERNATIONAL,2024,50(17):29954-29965. |
| APA | Zhang, Jingying.,Tian, Jindan.,Xing, Bohang.,Wang, Jiemin.,Liu, Bin.,...&Zhao, Zhe.(2024).Preparation and thermal/dielectric properties of medium/high entropy perovskite titanate ceramics.CERAMICS INTERNATIONAL,50(17),29954-29965. |
| MLA | Zhang, Jingying,et al."Preparation and thermal/dielectric properties of medium/high entropy perovskite titanate ceramics".CERAMICS INTERNATIONAL 50.17(2024):29954-29965. |
入库方式： OAI收割
来源：金属研究所
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