| 纳米MgNb2O6微波介质陶瓷粉体制备及表征 |
| Preparation and Characterization of Nano-crystalline MgNb2O6 Microwave Dielectric Powder |
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| 摘要: |
| 关键词: MgNb2O6 凝胶燃烧工艺 纳米粉体 |
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| Abstract: Nano-crystalline MgNb2O6 was prepared using Mg(NO3)2·6H2O, Nb2O5, HF and citric acid as raw materials by auto-ignition route. The process involves the formation of a viscous gel by thermal dehydration of the citrate-nitrate solution at about 80 ℃. The auto-ignition (at about 200 ℃) of the gel resulted in a high reactivity powder containing intimate blending of MgNbF7 and NbF3. The crystalline phase of MgNb2O6 could be formed easily at 700 ℃, which is 400 ℃ lower than that of common solid-state reaction process. The nano-crystalline MgNb2O6 (～30 nm) powder with good dispersity could be obtained at 850 ℃. |
| Keywords: MgNb2O6 gel combustion process nanometer powders |
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| 王伟,张启龙,王焕平,杨辉.纳米MgNb2O6微波介质陶瓷粉体制备及表征[J].无机化学学报,2006,22(10):1887-1890. |
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