Tantalum capacitor impregnation process

Details Tantalum capacitor impregnation process Tantalum capacitor impregnation process

1995-03-07

1997-04-22

Beck, Shrive

Coating processes

Electrical product produced

Condenser or capacitor

427 80, 427 81, 29 2503, 29 2542, 361529, B05D 512, H01G 700

Patent

active

056227469

ABSTRACT:
The present invention provides a manganese nitrate coating having high conductivity and solid tantalum anode capacitors having low ESR by using an oven atmosphere which effectively treats all of the anodes in the oven. The manganese nitrate coating of the present invention is produced under highly oxidizing conditions by providing one or more oxidizing agents more active than nitrogen dioxide in the atmosphere of the oven during pyrolysis of manganese nitrate. The oxidizing agents include nitric acid, hydrogen peroxide, ozone, and mixtures thereof.

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The Condensed Chemical Dictionary, pp. 545, 729 and 769.
Klose, "Electrical Properties of Manganese Dioxide and Manganese Sesquioxide," J. Electrochem. Soc.: Electrochemical Science, 117(7):854-858.
Nishino et al., "Manganese Dioxide Symposium", 1980, Tokyo (published by Electrochemical Society, 1981), pp. 305-320.

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