Magnetic fluid and process for the production thereof

H - Electricity – 01 – F

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

253/131

H01F 1/28 (2006.01) H01F 1/34 (2006.01) H01F 1/44 (2006.01)

Patent

CA 2304229

A magnetic fluid which can work powerfully and at high precision under the action of an external magnetic field, is remarkably increased in the viscosity by applying an external magnetic field and regulating it, can be controlled in the viscosity easily and accurately, is excellent in the oxidation resistance of the particles and the dispersibility thereof, and exhibits satisfactorily large viscosity characteristics; and a process for the production of the same. The fluid is characterized in that magnetic metal particles covered with antioxidant films are stably dispersed in a solvent and that the stable dispersion is maintained, and the process is characterized by forming oxide films on the surfaces of starting oxide particles for the production of magnetic metal particles, reducing the resulting oxide particles to form magnetic metal particles covered with antioxidant films, and dispersing the magnetic metal particles covered with antioxidant films in a solvent stably.

L'invention se rapporte à un fluide magnétique qui peut s'avérer très puissant et de grande précision sous l'action d'un champ magnétique externe et dont on peut augmenter considérablement la viscosité en appliquant un champ magnétique externe et en régulant ce champ. Ce fluide, dont on peut réguler la viscosité aisément et précisément et qui possède une excellente résistance à l'oxydation des particules et une excellente dispersibilité particulaire, présente des caractéristiques de viscosité suffisamment étendues. Ce fluide se caractérise en ce que des particules métalliques magnétiques, recouvertes de films antioxydants, sont dispersées de manière stable dans un solvant et en ce que la dispersion stable est conservée. Le procédé de cette invention se caractérise par la formation de films d'oxydes sur les surfaces de particules d'oxydes de départ, en vue de la production de particules métalliques magnétiques, par la réduction des particules d'oxydes résultantes en vue de la formation de particules métalliques magnétiques recouvertes de films antioxydants, et par la dispersion stable des particules métalliques magnétiques recouvertes de films antioxydants dans un solvant.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Magnetic fluid and process for the production thereof does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Magnetic fluid and process for the production thereof, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic fluid and process for the production thereof will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1640339

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.