Effects of tungsten trioxide addition and top-temperature sintering period on properties of high-permeability NiCuZn ferrite

被引：14

作者：

Su, Hua ^{[1
]}

Zhang, Huaiwu ^{[1
]}

Tang, Xiaoli ^{[1
]}

Shi, Yu ^{[1
]}

机构：

[1] Univ Elect Sci & Technol China, State Key Lab Elect Thin Films & Integrated Devic, Chengdu 610054, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2009年 / 468卷 / 1-2期

基金：

中国国家自然科学基金;

关键词：

Powder metallurgy; Magnetic measurements; NI-ZN FERRITES; MAGNETIC-PROPERTIES; MICROSTRUCTURE;

D O I：

10.1016/j.jallcom.2007.12.081

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We examined the effects of added WO3 and top-temperature sintering period on initial permeability and other material characteristics in order to develop NiCuZn ferrites with a high permeability. It was found that to obtain a single-phase spinel ferrite, the content of WO3 addition should be less than 0.28 wt%. With proper WO3 addition, average grain size and initial permeability of the ferrite increased obviously. However, overfull WO3 addition lead to increase of porosity and impeded grain growth. As a result, the initial permeability increased, peaked, and then gradually declined Under the influence of WO3 addition. The maximum initial permeability was observed at a WO3 content of 0.16. wt% with 3-h top-temperature sintering. Furthermore, by prolonging the top-temperature sintering period to curb porosity, it was possible to obtain a higher permeability of the NiCuZn ferrite. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：290 / 294

页数：5

共 17 条

[1] Study of the microstructure and of the permeability spectra of Ni-Zn-Cu ferrites [J].