Applications
Ferrofluids - Superparamagnetic nanoparticles
Article REF: N4590 V1
Applications
Ferrofluids - Superparamagnetic nanoparticles

Authors : Irena MILOSEVIC, Laurence MOTTE, Frédéric MAZALEYRAT

Publication date: April 10, 2011 | Lire en français

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3. Applications

3.1 Industrial applications

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3.1.1 Ferrofluid seals

This application exploits a unique property of a ferrofluid subjected to a field: it is both liquid and rigid. This property means that the seal is both liquid (i.e. low-friction) and watertight. In general, the magnetic field is produced by a ring magnet with an axial field, placed in the stator, which closes in the shaft so that the field is radial in the air gap (figure 7...

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