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凝胶自燃法制备低温烧结Z型铁氧体材料
Preparation of Low-temperature Sintering Z-type Hexaferrite by Gel Self-combustion Technique
【摘要】 采用干凝胶自燃工艺制得铁氧体纳米粉 ,研究了干凝胶的自燃烧过程 ,利用XRD分析了纳米粉的晶体结构与晶粒尺寸 ,结合TG -DTA数据 ,设计了粉体处理与陶瓷样品的烧结工艺。选用自燃粉制得的低温烧结Z型铁氧体材料性能为 :μi≈ 4(30 0MHz) ;Q≥ 150 ;fr≥ 1.5GHz。
【Abstract】 Ferrite nanocrystalline powders were obtained by gel self-combustion method and characterized by XRD analysis with which crystal structure and crystallite size were determined.The process of gel self-combustion and singtering ferrite samples was studied by IR and TG-DTA experiment data.The obtained Z-type ferrite ceramics exhibits initial permeability at 300MHz of ∽ 4,quality factor of ≥150,resonance frequency of ≥1.5GHz.
【关键词】 干凝胶;
自燃烧;
低温烧结;
Z型铁氧体;
【Key words】 dry gel; self-combustion; low-temperature sintering; Z-type ferrite;
【Key words】 dry gel; self-combustion; low-temperature sintering; Z-type ferrite;
【基金】 863高技术资助项目!;项目编号 71 5-Z3 3 -0 0 6-0 0 50
- 【文献出处】 功能材料 ,JOURNAL OF FUNCTIONAL MATERIALS , 编辑部邮箱 ,2000年S1期
- 【分类号】TM277.2
- 【被引频次】36
- 【下载频次】205