Journal of the Korean Magnetics Society (한국자기학회지)
- Volume 3 Issue 3
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- Pages.234-240
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- 1993
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- 1598-5385(pISSN)
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- 2233-6648(eISSN)
Preparation and Property of Water Based Manetic Fluid by Peptization Method
해교법에 의한 수상자성유체의 제조 및 특성에 관한 연구
- Oh, Jae-Hyun (Department of Metallurgical Engineering, College of Engineering, Yonsei University) ;
- Kim, Min-Seuk (Department of Metallurgical Engineering, College of Engineering, Yonsei University) ;
- Kim, Mahn (Department of Metallurgical Engineering, College of Engineering, Yonsei University) ;
- Kim, Seung-Wan (Iron Making Dept. Kwangyang, Iron Making Lab. Kwangyang, Korea Research Institute of Industrial Science and Technology)
- Published : 1993.09.01
Abstract
The water-based magnetic fluids were prepared with the synthesized ultrafine magnetite, dodecanoic acid as surfactant. Characteristics of synthesized ultrafine magnetite were investigated with X-ray Diffraction Pattern, Transmission Electron Microscope, Vibrating Sample Magnetometer and BET analysis. Dispersion characteristics of water-based magnetic fluids were investigated in relation to amounts of surfactant, pH and solid content.
본 연구에서는 습식법에 의해서 초미립 마그네타이트를 합성하였으며, 이를 자성유체의 분산질로 하는 수상자성 유체를 제조하였다. 이때 합성마그네타이트의 입자표면에는 dodecanoic acid 이온의 흡착층을 형성시켜 수용액중에 안정하게 분산시켰다. 또한 합성된 마그네타이트의 기초적 물 성과 수상자성유체 제조시 계면활성제의 첨가량 및 pH의 변화등이 자성유체의 분산측성, 자기적 특성 및 콜로이드적 안정성에 미치는 영향을 조사하였다.
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