| 熔盐法包覆BaTiO3及其电性能 |
| BaTiO3 Coated by Fused Salt Method and its Electric Property |
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| 摘要: 通过熔盐法将MgTiO3薄膜均匀地包覆在钛酸钡颗粒表面形成芯壳结构。包覆机理是在MgCl2的熔盐状态800℃下Mg2+取代BaTiO3中的Ba2+离子表面生成MgTiO3薄膜薄膜厚度约20nm。采用TEM、XRD验证了MgTiO3的包覆。包覆粉末经烧成瓷后具有良好的高频性能在1MHz～800MHz的频率范围内介电常数恒定为130。 |
| 关键词: 熔盐法 BaTiO3 MgTiO3 包覆 介电常数 |
| 基金项目: |
| Abstract: Barium Titanate fine particles were coated homogeneously with Mag nesiu m Titanate by the fused salt method.The thickness of the Mag nesium Titan ate film is about 20nm.The coating was validated by TEM and XRD.The mechani sm of the coating is that:when magnesium chloride is fused in 800℃,Mg 2+ will take the place of Ba2+ in BaTiO3,and then form MgTiO3 film on the surface of Barium Titanate particles.Ceramic s sintered from th e coated particles show good performance at high frequency.The dielectric const ant is keeping about 130at the frequency range from 1MHz to 800MHz. |
| Keywords: fused salt BaTiO3 MgTiO3 coating dielectric constant |
| 投稿时间：2001-03-08 修订日期：2001-07-03 |
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| 崔爱莉,陈仁政,尉京志,李龙土.熔盐法包覆BaTiO3及其电性能[J].无机化学学报,2001,17(5):627-630. |
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