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
收藏
页码：517 / 523
页数：7
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