Effects of Process Conditions on Properties of Nano-Magnetic Fluid

Abstract:

In order to analyze the influences of process condition on kerosene-based Fe₃O₄, which are prepared in chemical co-precipitation, orthogonal experiment was used. How process condition influenced the size of nano-particles and saturation magnetization was studied, and the best process condition as 40ml•min^-1 NaOH adding speed, 10ml•min^-1 sodium oleate adding speed, 45°C reaction temperature, 15min holding time and pH value of 2 of coating sodium oleate was obtained. The performance of magnetic particles was characterized by transmission electron microscopy (TEM) and WSM vibration magnetometer. The diameter of Fe₃O₄ nano-particles was less than 10nm, saturation magnetization was 2.66×10⁴A•m^-1, viscosity of nano-magnetic fluid was 18mPa•s, and density was 1.13×10³kg•m^-3. This research enhanced the foundation of using nano-magnetic fluid.

• Periodical: Advanced Materials Research (Volumes 194-196)
• Pages: 700-703
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.194-196.700
• Online since: February 2011
• Authors: Bing Chen, Yu Guang Fan
• Keywords: Coprecipitation, Nano-Magnetic Fluid, Orthogonal Design, Process Condition

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