Process for manufacturing tantalum capacitors
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 1,300 to 2,000 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.
- Inventors:
- Issue Date:
- OSTI Identifier:
- 6261549
- Patent Number(s):
- 5184286
- Application Number:
- PPN: US 7-853474
- Assignee:
- Martin Marietta Energy Systems, Inc., Oak Ridge, TN (United States)
- DOE Contract Number:
- AC05-84OR21400
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 10 Mar 1992
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 24 POWER TRANSMISSION AND DISTRIBUTION; CAPACITORS; MANUFACTURING; BINDERS; COLD WORKING; HEATING; LUBRICANTS; MANGANESE OXIDES; MICROWAVE RADIATION; POWDERS; SINTERING; TANTALUM; CHALCOGENIDES; ELECTRICAL EQUIPMENT; ELECTROMAGNETIC RADIATION; ELEMENTS; EQUIPMENT; FABRICATION; MANGANESE COMPOUNDS; MATERIALS WORKING; METALS; OXIDES; OXYGEN COMPOUNDS; RADIATIONS; TRANSITION ELEMENT COMPOUNDS; TRANSITION ELEMENTS; 240100* - Power Systems- (1990-)
Citation Formats
Lauf, R J, Holcombe, C E, and Dykes, N L. Process for manufacturing tantalum capacitors. United States: N. p., 1993.
Web.
Lauf, R J, Holcombe, C E, & Dykes, N L. Process for manufacturing tantalum capacitors. United States.
Lauf, R J, Holcombe, C E, and Dykes, N L. Tue .
"Process for manufacturing tantalum capacitors". United States.
@article{osti_6261549,
title = {Process for manufacturing tantalum capacitors},
author = {Lauf, R J and Holcombe, C E and Dykes, N L},
abstractNote = {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 1,300 to 2,000 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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1993},
month = {2}
}
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