MR fluid for increasing the output of a magnetorheological...

Details MR fluid for increasing the output of a magnetorheological... MR fluid for increasing the output of a magnetorheological...

2006-08-08

2006-08-08

Koslow, C. Melissa (Department: 1755)

Compositions

Magnetic

Flaw detection or magnetic clutch

Reexamination Certificate

active

07087184

ABSTRACT:
What is disclosed is a magnetorheological fluid useful for incorporating within the working gap of magnetorheologically controllable linear or rotary devices. The MR fluid includes a carrier fluid component and a magnetic responsive particle component characterized by D10of 2 μm up to and including a D10of 5 μm, a D50of 8 μm up to and including D50of 15 μm; a D90of 25 μm to and including a D90of 40 μm; and further characterized by least squares regression (R2) particles size against log normal cumulative volume percent of greater than or equal to 0.77. Optional preferred additives included therewith include thixotropic agent or viscosity modifier, dispersant or surfactant, antioxidant, corrosion inhibitor, and one or more lubricants.

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