Fabrication of nanopowders by high energy ball milling and low temperature sintering of Mg2SiO4 microwave dielectrics
Fabrication of nanopowders by high energy ball milling and low temperature sintering of Mg2SiO4 microwave dielectrics
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Mg2SiO4微波介质的高能球磨和低温烧结制备纳米粉末
DOI:
10.1016/j.jallcom.2011.10.051
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发表时间:
2012-02
影响因子:
6.2
通讯作者:
HuaiWu Zhang
中科院分区:
文献类型:
--
作者:
Lin Cheng;Peng Liu;XiaoMing Chen;HuaiWu Zhang
Mg2SiO4nanopowders were prepared from MgO and SiO2mixtures by using a high energy ball milling method, combined with subsequent calcination at low temperatures. After milling for 30h, pure phase Mg2SiO4nanopowders with an average grain size of 147.4nm were obtained at 850°C, 300°C lower than that required by a conventional solid state reaction process. Mg2SiO4ceramics sintered at a low temperature of 1075°C showed almost full density and excellent microwave dielectric properties (ɛr=7.2, Q×f=193,800GHz, τf=−58ppm/°C).
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