Sintering behavior and microwave dielectric characteristics of ZnTiNb2O8 ceramics achieved by reaction sintering of ZnO-TiO2-Nb2O5 nanosized powders

被引:25
作者
Bafrooei, H. Barzegar [1 ]
Nassaj, E. Taheri [1 ]
Ebadzadeh, T. [2 ]
Hu, C. F. [3 ]
Sayyadi-Shahraki, A. [1 ]
Kolodiazhnyi, T. [4 ]
机构
[1] Tarbiat Modares Univ, Dept Mat Sci & Engn, Tehran, Iran
[2] Mat & Energy Res Ctr, Ceram Div, Alborz, Iran
[3] Southwest Jiaotong Univ, Sch Mat Sci & Engn, Minist Educ, Key Lab Adv Technol Mat, Chengdu 610031, Sichuan, Peoples R China
[4] Natl Inst Mat Sci, Tsukuba, Ibaraki 3050044, Japan
基金
中国国家自然科学基金;
关键词
Reaction sintering; Microwave dielectric ceramic; ZnTiNb2O8; CRYSTAL-STRUCTURE; PHASE-RELATIONS; MICROSTRUCTURE; ZNNB2O6-TIO2; RESONATORS; FILTERS; ORIGIN; FILMS;
D O I
10.1016/j.ceramint.2015.10.121
中图分类号
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Sintering behavior, microstructure and microwave dielectric properties of ZnTiNb2O8 (ZTN) ceramics prepared by reaction-sintering method were investigated. The prepared ceramic samples were characterized by field emission scanning electron microscopy, X-ray diffraction, and microwave dielectric measurements. All samples prepared at sintering temperatures ranging from 1025 to 1125 degrees C exhibit a single ixiofite phase and their relative densities range from similar to 86.5 % to similar to 99 %. The variation trend of permittivity and Q x f value was in accordance with variation trend of relative density. Pure ixiolite ZTN ceramic sintered at 1075 degrees C for 5 h exhibits good microwave dielectric properties with a permittivity about 36.7, Q x f value about 54,000 GHz, and temperature coefficient of resonant frequency about -70.4 ppm/degrees C. The obtained results demonstrated that the reaction-sintering process is a simple and effective method to prepare the ZnTiNb2O8 ceramics for passive microwave dielectric devises. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
引用
收藏
页码:3296 / 3303
页数:8
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