Co取代对Nd(Zn0.5Ti0.5)O3微波介质陶瓷结构与性能的影响

doi:10.12034/j.issn.1009-606X.217275

过程工程学报 ›› 2018, Vol. 18 ›› Issue (2): 411-416.DOI: 10.12034/j.issn.1009-606X.217275

Co取代对Nd(Zn0.5Ti0.5)O3微波介质陶瓷结构与性能的影响

李家茂^1,2*，樊传刚¹，姚立春²，丘泰³

1. 安徽工业大学材料科学与工程学院，安徽马鞍山 243032；2. 江苏先进无机功能复合材料协同创新中心，江苏南京 210009； 3. 南京工业大学材料科学与工程学院，江苏南京 210009

收稿日期:2017-07-17 修回日期:2017-08-10 出版日期:2018-04-22 发布日期:2018-04-10
通讯作者: 李家茂 agdjiamaolee@126.com
基金资助:
安徽省自然科学基金

Effects of Co Substitution on Structure and Microwave Dielectric Properties of Nd(Zn0.5Ti0.5)O3 Ceramics

Jiamao LI^1,2*, Chuangang FAN¹, Lichun YAO², Tai QIU³

1. School of Materials Science and Engineering, Anhui University of Technology, Ma?anshan, Anhui 243002, China; 2. Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing, Jiangsu 210009, China; 3. College of Materials Science and Engineering, Nanjing Tech University, Nanjing, Jiangsu 210009, China

Received:2017-07-17 Revised:2017-08-10 Online:2018-04-22 Published:2018-04-10

摘要/Abstract

摘要： 采用传统固相法制备Nd[(Zn1?xCox)0.5Ti0.5]O3 (0≤x≤0.9)微波介质陶瓷，研究Co2+在B位取代Zn2+对Nd(Zn0.5Ti0.5)O3微波介质陶瓷的结构和微波介电性能的影响. 结果表明，在研究的组分范围内，Nd[(Zn1?xCox)0.5Ti0.5]O3陶瓷均能形成单斜钙钛矿型固溶体，随Co取代量增加，陶瓷的相对介电常数?r逐渐减小，谐振频率温度系数?f逐渐向负值移动，品质因数Q×f先增大后下降，在x=0.3 mol时达到最大值215130 GHz, Q×f大幅增加是有序度作用所致. 在1410℃下烧结4 h, Nd[(Zn0.7Co0.3)0.5Ti0.5]O3陶瓷具有优异的微波介电性能，?r=31.2, Q×f=215130 GHz, ?f=?35.7×10?6℃?1.

关键词: Nd(Zn0.5Ti0.5)O3, 离子取代, 烧结性, 显微结构, 微波介电性能

Abstract: Nd[(Zn1–xCox)0.5Ti0.5]O3 (0≤x≤0.9) microwave dielectric ceramics were prepared by a conventional solid-state route. The effects of Co2+ B-site substitution Zn2+ on the structure and microwave dielectric properties of Nd(Zn0.5Ti0.5)O3 ceramics were extensively investigated. The results showed that a solid solution with the monoclinic perovskite structure was formed in the investigated compositional range. The relative dielectric constant ?r decreased gradually and the temperature coefficient of resonant frequency ?f moved to a positive tendency with the increase of Co substitution. The quality factor Q×f initially increased to a maximum value of 215130 GHz at x=0.3 mol and thereafter declined. The substantial rise of Q×f might be attributed to the improvement of B-site cation ordering. Nd[(Zn0.7Co0.3)0.5Ti0.5]O3 ceramics had good microwave dielectric properties sinteringat 1410℃ for 4 h, ?r=31.2, Q×f=215130 GHz, ?f=?35.7×10?6℃?1.

Key words: Nd(Zn0.5Ti0.5)O3, ion substitution, sinterability, microstructure, microwave dielectric properties

李家茂樊传刚姚立春丘泰. Co取代对Nd(Zn0.5Ti0.5)O3微波介质陶瓷结构与性能的影响[J]. 过程工程学报, 2018, 18(2): 411-416.

Jiamao LI Chuangang FAN Lichun YAO Tai QIU. Effects of Co Substitution on Structure and Microwave Dielectric Properties of Nd(Zn0.5Ti0.5)O3 Ceramics[J]. Chin. J. Process Eng., 2018, 18(2): 411-416.

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Co取代对Nd(Zn0.5Ti0.5)O3微波介质陶瓷结构与性能的影响

Effects of Co Substitution on Structure and Microwave Dielectric Properties of Nd(Zn0.5Ti0.5)O3 Ceramics

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