Process for producing a powder material for an electro-rheologic

Details Process for producing a powder material for an electro-rheologic Process for producing a powder material for an electro-rheologic

1996-03-19

1997-12-02

Beck, Shrive

Coating processes

Particles, flakes, or granules coated or encapsulated

427399, 252 71, 252 73, 252 74, 252572, 423460, B05D 704

Patent

active

056933673

ABSTRACT:
A process for producing a powder material for an electro-rheological fluid is provided. The powder material is advantageously used for an electro-rheological fluid having a property, such as viscosity, which changes by application of an electric field. A powder material for an electro-rheological fluid having a uniform distribution of particle diameters and a uniform distribution of electric conductivity can be produced by embrittling a carbonaceous powder material, pulverizing and classifying the embrittled carbonaceous powder material to obtain a carbonaceous powder material having a uniform distribution of particle diameters, and carbonizing the powder material under an atmosphere of an inert gas.

REFERENCES:
patent: 5252249 (1993-10-01), Kurachi et al.
patent: 5332517 (1994-07-01), Torii et al.

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