Microwave synthesis and sintering of Mg4Nb2O9 nanoceramics

被引：0
作者：
M. H. Sarrafi
H. Barzegar Bafrooei
M. Feizpour
T. Ebadzadeh
M. Harir Foroush
机构：
[1] Materials and Energy Research Center,Ceramic Division
[2] Malek Ashtar University of Technology,undefined
来源：
Journal of Materials Science: Materials in Electronics | 2014年 / 25卷
关键词：
Microwave Heating; Microwave Dielectric Property; Dielectric Resonator; Conventional Sinter; High Energy Ball Milling;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Mg4Nb2O9 nanopowders were prepared from MgO and Nb2O5 mixtures by using a high energy ball milling method, combined with subsequent annealing at low temperatures by microwave heating. After milling for 20 h, pure phase Mg4Nb2O9 nanopowders with an average grain size of 127 nm were obtained at 850, 130 °C lower than that required by a conventional solid state reaction process. Mg4Nb2O9 ceramics sintered at a low temperature of 1,300 °C using microwave heating showed almost full density and excellent microwave dielectric properties (εr = 12.9, Q × f = 174,200 GHz and τf = −68).
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页码：946 / 951
页数：5
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