Nano Archive

Studies on preparation and chemical stability of reduced iron particles encapsulated with polysiloxane nano-films

Pu, Hongting and Jiang, Fengjing and Yang, Zhenglong (2006) Studies on preparation and chemical stability of reduced iron particles encapsulated with polysiloxane nano-films. Materials Letters, 60 (1). 94 - 97.

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Official URL: http://www.sciencedirect.com/science/article/B6TX9...

Abstract

The soft magnetic composite of reduced iron particles encapsulated with polysiloxane shell was prepared by hydrolysis–condensation polymerization of tetraethylorthosilicate (TEOS) on the surface of iron particles. The structure, morphology, magnetic properties, and chemical stability of the polysiloxane coated iron particles were studied. The thickness of the shell was about 60 nm according to the results of transmission electron microscopy (TEM) and laser particle size analysis, while the mean diameter of the iron particle was 4.45 μm. The chemical stability of the soft magnetic composites was greatly improved, though its magnetic properties were declined a little. However, encapsulated iron particles are still useful in MR fluids as its magnetic properties are much better than other soft magnetic particles like Fe3O4, etc.

Item Type:Article
Uncontrolled Keywords:Magnetorheological fluids; Reduced iron; Polysiloxane; Soft magnetic composites
Subjects:Material Science > Nanofabrication processes and tools
Physical Science > Nanomagnetics
ID Code:6830
Deposited By:SPI
Deposited On:01 Oct 2009 17:44
Last Modified:01 Oct 2009 17:44

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