CA2186955A1 - MAgnetorheological Materials Utilizing Surface-Modified Particles - Google Patents

MAgnetorheological Materials Utilizing Surface-Modified Particles

Info

Publication number
CA2186955A1
CA2186955A1 CA2186955A CA2186955A CA2186955A1 CA 2186955 A1 CA2186955 A1 CA 2186955A1 CA 2186955 A CA2186955 A CA 2186955A CA 2186955 A CA2186955 A CA 2186955A CA 2186955 A1 CA2186955 A1 CA 2186955A1
Authority
CA
Canada
Prior art keywords
particle
magnetorheological
modified particles
magnetorheological materials
materials utilizing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA2186955A
Other languages
French (fr)
Other versions
CA2186955C (en
Inventor
J. David Carlson
Keith D. Weiss
Donald A. Nixon
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lord Corp
Original Assignee
Lord Corporation
J. David Carlson
Keith D. Weiss
Donald A. Nixon
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lord Corporation, J. David Carlson, Keith D. Weiss, Donald A. Nixon filed Critical Lord Corporation
Publication of CA2186955A1 publication Critical patent/CA2186955A1/en
Application granted granted Critical
Publication of CA2186955C publication Critical patent/CA2186955C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/44—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of magnetic liquids, e.g. ferrofluids
    • H01F1/447—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of magnetic liquids, e.g. ferrofluids characterised by magnetoviscosity, e.g. magnetorheological, magnetothixotropic, magnetodilatant liquids

Abstract

A magnetorheological material containing a carrier fluid and a magnetically active particle. The particle has been modified so that the surface of the particle is substantially free of contamination products. The contamination products are removed from the surface of the particle by abrader processing, chemical treatment or a combination thereof. Magnetorheological materials prepared using the particles from which contamination products have been removed exhibit significantly enhanced magnetorheological effects.
CA002186955A 1994-04-13 1995-04-06 Magnetorheological materials utilizing surface-modified particles Expired - Fee Related CA2186955C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/227,297 1994-04-13
US08/227,297 US5578238A (en) 1992-10-30 1994-04-13 Magnetorheological materials utilizing surface-modified particles
PCT/US1995/004259 WO1995028719A1 (en) 1994-04-13 1995-04-06 Magnetorheological materials utilizing surface-modified particles

Publications (2)

Publication Number Publication Date
CA2186955A1 true CA2186955A1 (en) 1995-10-26
CA2186955C CA2186955C (en) 2000-02-29

Family

ID=22852560

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002186955A Expired - Fee Related CA2186955C (en) 1994-04-13 1995-04-06 Magnetorheological materials utilizing surface-modified particles

Country Status (6)

Country Link
US (1) US5578238A (en)
EP (1) EP0755563B1 (en)
JP (1) JPH09512137A (en)
CA (1) CA2186955C (en)
DE (1) DE69528760T2 (en)
WO (1) WO1995028719A1 (en)

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Also Published As

Publication number Publication date
WO1995028719A1 (en) 1995-10-26
US5578238A (en) 1996-11-26
EP0755563B1 (en) 2002-11-06
CA2186955C (en) 2000-02-29
EP0755563A4 (en) 1997-07-16
EP0755563A1 (en) 1997-01-29
DE69528760D1 (en) 2002-12-12
DE69528760T2 (en) 2003-07-03
JPH09512137A (en) 1997-12-02

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