AQUEOUS FERROFLUIDS BASED ON MANGANESE AND COBALT FERRITES

被引：300

作者：

TOURINHO, FA

FRANCK, R

MASSART, R

机构：

[1] Laboratoire de Physicochimie Inorganique (Associé au C.N.R.S.-U.A. 419), Université Pierre et Marie Curie, Bâtiment F, 5ème étage, Paris Cedex 05, 75252

来源：

JOURNAL OF MATERIALS SCIENCE | 1990年 / 25卷 / 07期

关键词：

D O I：

10.1007/BF00587682

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Synthesis of two new aqueous ferrofluids is performed chemically according to Massart's procedure. Manganese and cobalt ferrite magnetic particles are precipitated and treated in order to obtain colloidal sols by creating a charge density on their surface. Such "ionic" ferrofluids can be prepared in an acidic (after a treatment by ferric nitrate) or in an alkaline medium at a concentration as high as 17moll-1, i.e. a volumic fraction of 0.26. This result makes these new compounds of great interest. © 1990 Chapman and Hall Ltd.

引用

页码：3249 / 3254

页数：6

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