Electrically conductive ceramics and their use in fiber charging

Details Electrically conductive ceramics and their use in fiber charging Electrically conductive ceramics and their use in fiber charging

1995-03-07

1997-02-11

Chiesa, Richard L.

Plastic article or earthenware shaping or treating: apparatus

Means applying electrical or wave energy directly to work

Electro-static or inductive field

252521, 264484, 361225, 361233, 501117, 501119, B29C 3510

Patent

active

056018533

ABSTRACT:
A conductive ceramic composition is disclosed which consists essentially of alumina, chromia, and magnesia, and is suitable for use as target electrodes in electrostatic fiber charging applications. Ceramics are disclosed which have exhibit volume resistivities of 10.sup.12 ohm-cm or less at 20.degree. C., and have excellent electrical stability and superior mechanical properties; and an electrostatic charging apparatus is disclosed which employs a ceramic electronic conductor having a volume resistivity of from about 1.times.10.sup.7 to 5.times.10.sup.10 ohm-cm and a hardness of at least 5 GPa.

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