Electricity: electrical systems and devices – Electrolytic systems or devices – Solid electrolytic capacitor
Patent
1992-03-18
1993-02-02
Griffin, Donald
Electricity: electrical systems and devices
Electrolytic systems or devices
Solid electrolytic capacitor
29 2503, 419 2, H01G 905, B22F 100
Patent
active
051842866
ABSTRACT:
A process for manufacturing tantalum capacitors in which microwave energy is used to sinter a tantalum powder compact in order to achieve higher surface area and improved dielectric strength. The process comprises cold pressing tantalum powder with organic binders and lubricants to form a porous compact. After removal of the organics, the tantalum compact is heated to 1300.degree. to 2000.degree. C. by applying microwave radiation. Said compact is then anodized to form a dielectric oxide layer and infiltrated with a conductive material such as MnO.sub.2. Wire leads are then attached to form a capacitor to said capacitor is hermetically packaged to form the finished product.
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Dykes Norman L.
Holcombe Cressie E.
Lauf Robert J.
Adams Harold W.
Craig George L.
Griffin Donald
Martin Marietta Energy Systems Inc.
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