Accession Number : AD0713480

Title :   DEVELOPMENT OF AN IMPROVED SOLID ELECTROLYTIC CAPACITOR.

Descriptive Note : Final engineering rept. 25 Apr 60-25 Jun 61,

Corporate Author : PHILCO CORP BLUE BELL PA

Personal Author(s) : Nicholson,Basil J.

Report Date : 25 AUG 1961

Pagination or Media Count : 55

Abstract : A study was made of foamed silicon carbide with a view to utilizing this material as the basis of a solid electrolytic capacitor. The capacitor dielectric consists of a surface film of silica produced by thermal oxidation at 1200C. The foam is electrically conducting and provides contact to one side of the dielectric; a manganese dioxide counter-electrode or a conducting electrolyte can make contact to the opposite face of the dielectric. An anodic forming step is necessary after oxidation in order to obtain low leakage currents at operating voltages. The effect of various oxidation parameters (time, temperature, pressure) upon electrical performance was assessed, and a number of electrolytes were examined in order to form the oxide. Anodic oxidation of single crystals of silicon carbide was also investigated. (Author)

Descriptors :   (*ELECTROLYTIC CAPACITORS, DESIGN), (*SILICON CARBIDES, ELECTROLYTIC CAPACITORS), DIELECTRICS, SILICON DIOXIDE, MANGANESE COMPOUNDS, DIOXIDES, FOAM, ELECTROLYTES, LEAKAGE(ELECTRICAL)

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE