Manufacture of an oil-based Fe-Co magnetic fluid by utilization of the pickling liquid of steel

被引：1

作者：

Zorigtkhuu, Davaanyam ^{[1
]}

Kim, Young-Sam ^{[1
]}

Kim, Hyunsu ^{[1
]}

Suh, Yong Kweon ^{[1
]}

机构：

[1] Dong A Univ, Grad Sch, Dept Met Engn, Pusan 604714, South Korea

来源：

METALS AND MATERIALS INTERNATIONAL | 2006年 / 12卷 / 06期

关键词：

ultra-fine Fe-Co particle; magnetic fluid; surfactant;

D O I：

10.1007/BF03027753

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Oxidation-resistant ultra-fine Fe-Co particles were produced by reduction of silica-coated Co-ferrite with hydrogen gas in a horizontal tube furnace at 550 degrees C for 7 h. The mean particle size of the Fe-Co particles was 13 nm and the specific magnetization of the particles was 162 emu/g. In addition, a surfactant coating thickness greater than 11.8 nm was formed after triple coatings of the surface active agents oleic acid, silicone oil and polyvinylpyrrolidone on the surface of the Fe-Co particles to promote dispersion stability. A dispersion with an efficiency of up to 94 % was achieved.

引用

页码：517 / 523

页数：7

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