Preparation of the Percolative Nickel-Zinc Ferrite/Barium Titanate Composite Ceramics with Liquid-Solid Hybrid Method

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Preparation of the Percolative Nickel-Zinc Ferrite/Barium Titanate Composite Ceramics with Liquid-Solid Hybrid Method

更新时间：2025-07-09

- Preparation of the Percolative Nickel-Zinc Ferrite/Barium Titanate Composite Ceramics with Liquid-Solid Hybrid Method
- Vol. 44, Issue 12, Pages: 110-113+118(2010)
- 作者机构：
  
  浙江大学硅材料国家重点实验室,杭州,310027
- 作者简介：
- 基金信息：
- DOI：
  CLC： TB33;TM277
- Online First：10 December 2010，
  
  Published：2010
- 稿件说明：
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Preparation of the Percolative Nickel-Zinc Ferrite/Barium Titanate Composite Ceramics with Liquid-Solid Hybrid Method[J]. 2010, 44(12): 110-113+118.
DOI：

Preparation of the Percolative Nickel-Zinc Ferrite/Barium Titanate Composite Ceramics with Liquid-Solid Hybrid Method[J]. 2010, 44(12): 110-113+118. DOI：

摘要

利用自燃烧法制备Ni

0.5

粉体

利用溶胶凝胶法配制BaTiO

溶胶

通过BaTiO

溶胶混合Ni

0.5

粉体烧结制备得到xNi

0.5

/(1-x)BaTiO

复合粉体

再将其压成片状或环状后

在不同温度下成功烧结制备了渗流型复相陶瓷.研究了xNi

0.5

/(1-x)BaTiO

中镍锌铁氧体的摩尔分数x对陶瓷介电性能和磁性能的影响

结果表明:当x≤0.5时

复合体系与传统渗流型复合材料相似

介电常数随着x的增加呈指数性增长; 当x>0.5时

复相陶瓷在低频下的介电常数基本上不随x变化而变化

稳定在10 kF/m左右; 随着x从0.5增加到0.9

磁导率可从5 H/m升高至18 H/m.很明显

利用液固混合烧结方法

可以制备得到一种同时具有高介电常数和一定磁导率的复相陶瓷.

Abstract

0.5

/BaTiO

composite powders are synthesized by the liquid-solid hybrid method through mixing BaTiO

sol and Ni

0.5

powder together

in which the BaTiO

sol is prepared by sol-gel method and the Ni

0.5

powder is synthesized by self-combustion method. The Ni

0.5

/BaTiO

composite ceramics are succ

essfully prepared by pressing powder into green pellets and rings

and then sintering at different temperatures. The influences of ferrite phase on both the dielectric and magnetic properties of the composite are studied. The results show that

similar to the percolation behavior

the dielectric constant increases exponentially with increasing ferrite phase when its mole fraction is below 50% in the composite; while it remains almost a constant of about 10 000 F/m when the ferrite phase is more than 50%. The permeability of the composite increases from 5 to 18 H/m as ferrite phase increases from about 50% to 90%. It is clear that the composite ceramics with high dielectric constant and acceptable permeability can be obtained via the liquid-solid hybrid method.

关键词

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references

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