Electrorheological magnetic fluid and process for producing the same
AssigneesToyohisa Fujita, Nittetsu Mining Co., Ltd., Hitachi Powdered Metals Co., Ltd.
InventorsToyohisa Fujita, Kenji Yoshino
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Abstract
An electrorheological magnetic fluid including an electrically insulating liquid and fine particles dispersed therein is described, wherein the fine particles include a fine magnetic particle as a core, wherein the fine magnetic particle has a surface which is covered by an electroconductive substance, and the fine magnetic particle with its surface covered by the electroconductive substance is completely coated with a surfactant. A process for producing the electrorheological magnetic fluid is also described.
Claims3
An electrorheological magnetic fluid comprising an electrically insulating liquid and fine particles dispersed therein,
- wherein the fine particles comprise a fine magnetic particle as a core;
- wherein the fine magnetic particle has a surface which is a covered by an electroconductive substance;
- wherein the fine magnetic particle with its surface covered by the electroconductive substance is completely coated with a surfactant;
- wherein the electroconductive substance is a metal;
- and
- wherein the metal is coated in an average thickness of from 0.1 to 10 nm.
Dependencies are inferred from the claim text.