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材料导报  2023, Vol. 37 Issue (10): 21110026-6    https://doi.org/10.11896/cldb.21110026
  无机非金属及其复合材料 |
Bi0.5Na0.5TiO3和Bi0.5K0.5TiO3含量对三元固溶体系无铅PTC热敏陶瓷性能的影响
赵瑞钰1,2, 欧阳琪2, 马名生2,*, 陆毅青2, 魏红康1, 刘志甫2,*
1 景德镇陶瓷大学材料科学与工程学院,江西 景德镇 333403
2 中国科学院上海硅酸盐研究所,上海200050
Influence of Content of Bi0.5Na0.5TiO3 and Bi0.5K0.5TiO3 on the Properties of Lead-free PTC Ceramics of the Ternary Solid Solution System
ZHAO Ruiyu1,2, OUYANG Qi2, MA Mingsheng2,*, LU Yiqing2, WEI Hongkang1, LIU Zhifu2,*
1 School of Materials Science and Engineering, Jingdezhen Ceramic University, Jingdezhen 333403, Jiangxi, China
2 Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
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摘要 PTC热敏陶瓷的无铅化是绿色智能加热及电路智能保护元件研制的重要前提。为了获得可在空气气氛下烧结且兼具高居里温度和高升阻比的无铅化PTC热敏陶瓷,本工作采用固相法制备了(1-x)BaTiO3-0.5xBi0.5Na0.5TiO3-0.5xBi0.5K0.5TiO3和0.98BaTiO3-0.02yBi0.5Na0.5TiO3-0.02(1-y)Bi0.5K0.5TiO3三元固溶体系无铅PTC热敏陶瓷材料,研究了不同含量的Na和K元素对无铅PTC热敏陶瓷材料的烧结特性和电学性能的影响。结果表明,BNT和BKT均与BaTiO3形成固溶体,随着BNT含量的增加,PTC陶瓷平均晶粒尺寸减小;当BNT和BKT含量相同时,PTC陶瓷可以在较宽的烧结温度范围内实现半导化,且在空气气氛下烧结温度为1 200 ℃的陶瓷样品具有最佳的PTC效应,其室温电阻率为128 Ω·cm,升阻比为5个数量级,居里温度为142 ℃。
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赵瑞钰
欧阳琪
马名生
陆毅青
魏红康
刘志甫
关键词:  PTC陶瓷  无铅化  钛酸钡  三元固溶体系  交流阻抗谱    
Abstract: Lead-free PTC thermosensitive ceramics are important electronic ceramic materials to realize green intelligent heating and intelligent protection circuit application. In order to obtain the lead-free PTC thermosensitive ceramics with high Curie temperature and high resistance jump that can be sintered in an air atmosphere, (1-x) BaTiO3-0.5xBi0.5Na0.5TiO3-0.5xBi0.5K0.5TiO3 and 0.98BaTiO3-0.02yBi0.5Na0.5TiO3-0.02(1-y)-Bi0.5K0.5TiO3 ternary solution system ceramics were prepared by the solid phase method, and the effects of different contents of Na and K elements on the sintering behavior and electrical properties of the PTC ceramics were studied. It is found that BNT and BKT formed solid solution with BaTiO3. The average grain size of PTC ceramics decreased with the increase of BNT content. When the contents of BNT and BKT are the same, the semi-conductance of PTC ceramics can be realized in a wide sintering temperature range, and the ceramic samples sintered at 1 200 ℃ in air atmosphere have the best PTC effect, which has a room-temperature resistivity of 128 Ω·cm, resistance jump of about 5 orders, and Curie temperature of 142 ℃.
Key words:  PTC ceramic    lead-free    barium titanate    ternary solution system    alternating current impedance spectrum
出版日期:  2023-05-25      发布日期:  2023-05-23
ZTFLH:  TB34  
基金资助: 上海市青年科技启明星计划项目(20QA1410200)
通讯作者:  *马名生,中国科学院上海硅酸盐研究所副研究员、硕士研究生导师。2009年厦门大学物理系电子信息科学与技术专业本科毕业,2014年中国科学院上海硅酸盐研究所材料物理与化学专业博士毕业后留所工作至今。目前主要从事LTCC材料及集成器件、PTC热敏陶瓷材料及应用研究。发表论文30余篇。
刘志甫,中国科学院上海硅酸盐研究所研究员、博士研究生导师。1994—2001年在北京科技大学无机非金属材料专业学习,获得学士和硕士学位,2004年中国科学院上海硅酸盐研究所材料物理与化学专业博士毕业。目前主要从事先进介质材料与元器件的研究开发。发表论文120余篇。mamingsheng@mail.sic.ac.cn;liuzf@mail.sic.ac.cn   
作者简介:  赵瑞钰,2019年6月于河南科技大学获得工学学士学位。现为景德镇陶瓷大学与中国科学院上海硅酸盐研究所联合培养硕士研究生,目前主要研究方向为PTC陶瓷材料。
引用本文:    
赵瑞钰, 欧阳琪, 马名生, 陆毅青, 魏红康, 刘志甫. Bi0.5Na0.5TiO3和Bi0.5K0.5TiO3含量对三元固溶体系无铅PTC热敏陶瓷性能的影响[J]. 材料导报, 2023, 37(10): 21110026-6.
ZHAO Ruiyu, OUYANG Qi, MA Mingsheng, LU Yiqing, WEI Hongkang, LIU Zhifu. Influence of Content of Bi0.5Na0.5TiO3 and Bi0.5K0.5TiO3 on the Properties of Lead-free PTC Ceramics of the Ternary Solid Solution System. Materials Reports, 2023, 37(10): 21110026-6.
链接本文:  
http://www.mater-rep.com/CN/10.11896/cldb.21110026  或          http://www.mater-rep.com/CN/Y2023/V37/I10/21110026
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