EP 0823123 A1 19980211 - MAGNETIC FLUID WITH HIGH SATURATION MAGNETISATION
Title (en)
MAGNETIC FLUID WITH HIGH SATURATION MAGNETISATION
Title (de)
MAGNETOFLUID MIT HOHER SÄTTIGUNGSMAGNETISIERUNG
Title (fr)
FLUIDE MAGNETIQUE PRESENTANT UNE AIMANTATION A SATURATION ELEVEE
Publication
Application
Priority
- DE 9700443 W 19970227
- DE 19609281 A 19960227
- DE 19654864 A 19960227
Abstract (en)
[origin: WO9732321A1] The aim of the invention is to create a magnetic fluid with high saturation magnetisation and a saturation concentration above 100 mT in order to transmit greater loads. This is done according to the invention by forming stable dispersions in carrier fluids of cobalt and nanometer particles modified with adsorption layers. The volume concentration of the ferromagnetic components is between 5 and 35 %, preferably 15 and 30 %, and the volume concentration of the modified particles (bare particles with adsorption coating) is up to 50 vol. %.
IPC 1-7
IPC 8 full level
A61M 60/90 (2021.01); H01F 1/44 (2006.01); H02K 1/02 (2006.01); H02K 33/02 (2006.01)
CPC (source: EP US)
A61M 60/90 (2021.01 - EP US); H01F 1/442 (2013.01 - EP US); H02K 1/02 (2013.01 - EP); H02K 33/02 (2013.01 - EP)
Citation (search report)
See references of WO 9732321A1
Designated contracting state (EPC)
AT BE CH DE ES FR GB IT LI NL SE
DOCDB simple family (publication)
WO 9732321 A1 19970904; CA 2219503 A1 19970904; CA 2219503 C 20010424; EP 0823123 A1 19980211
DOCDB simple family (application)
DE 9700443 W 19970227; CA 2219503 A 19970227; EP 97918008 A 19970227