SOL-GEL COATING OF LITHIUM ZINC FERRITE POWDERS

被引：21

作者：

BROOKS, KG

AMARAKOON, VRW

机构：

[1] Alfred University, Alfred, New York

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 1991年 / 74卷 / 04期

关键词：

SOL GEL; COATINGS; FERRITES; TRANSMISSION ELECTRON MICROSCOPY; BOROSILICATES;

D O I：

10.1111/j.1151-2916.1991.tb06938.x

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Lithium zinc ferrite powders of composition Li0.3Zn0.4Mn0.05Fe2.25O4 were prepared by solid-state synthesis. Liquid-phase borosilicate sintering additives were applied to the ferrite particle surfaces at room temperature via a sol-gel coating technique. Calcined and comminuted ferrite powder was dispersed in methanol with predetermined quantities of tetraethyl orthosilicate and triethyl borate. Hydrofluoric acid was used to catalyze the sol-gel reactions. Amorphous coatings of 10 to 20 nm thickness were observed on particle surfaces by TEM. Chemical bonding in the coatings was studied using diffuse reflectance FTIR spectroscopy.

引用

页码：851 / 853

页数：3

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