Metal oxide-coated electrically conductive powders and compositi

Details Metal oxide-coated electrically conductive powders and compositi Metal oxide-coated electrically conductive powders and compositi

1991-06-17

1992-06-30

Griffin, Donald A.

Electricity: electrical systems and devices

Electrostatic capacitors

Fixed capacitor

361321, H01G 1015, H01G 410

Patent

active

051269155

ABSTRACT:
Finely divided particles of electrically conductive metal having a coating thereon a refractory metal oxide which is insoluble in the electrically conductive metal and non-reducing in the present of the electrically conductive metal, (2) the coating being sufficiently thick that the Isoelectric Point of the coated conductive metal particles is at least 1 unit higher than the Isoelectric Point of particles of the refractory metal oxide, (2) the tap density of the coated metal particles is at least 90% as high as the tap density of the uncoated metal particles, and (3) the metal oxide coating constitutes at least 0.05% by weight of the coated particles.

REFERENCES:
patent: 2237066 (1966-02-01), Martin et al.
patent: 3851228 (1974-11-01), Sheard
patent: 4325763 (1982-04-01), Utsumi et al.
patent: 4954926 (1990-09-01), Pepin

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