Accession Number : AD0680193

Title :   CONTROLLED ATMOSPHERE FIRING FOR FORMATION OF BARRIER-LAYER DIELECTRICS.

Descriptive Note : Technical rept.,

Corporate Author : ARMY ELECTRONICS COMMAND FORT MONMOUTH N J

Personal Author(s) : Wichansky,Howard

Report Date : NOV 1968

Pagination or Media Count : 18

Abstract : A new process was devised for producing barrier-layer dielectrics from high purity barium titanate. The process developed permits the formation of a dielectric with high capacitance per unit volume by a one-fire treatment with the use of controlled atmosphere in place of three separate firings presently required. A barrier-layer dielectric was produced that had a capacitance of 3400 picofarads in a bulk volume of 0.0062 cu in and dissipation factor of 0.035 at 1 kHz and room temperature. The capacitor demonstrated only a 20 percent decrease in capacitance with a 300-volt d.c. applied potential. (Author)

Descriptors :   (*DIELECTRIC FILMS, MANUFACTURING), BARIUM COMPOUNDS, TITANATES, HEAT TREATMENT, CONTROLLED ATMOSPHERES, BARRIER COATINGS, CERAMIC COATINGS, PROCESSING, VACUUM FURNACES, CAPACITANCE, VOLTAGE, STABILITY

Subject Categories : Coatings, Colorants and Finishes
      Miscellaneous Materials
      Mfg & Industrial Eng & Control of Product Sys

Distribution Statement : APPROVED FOR PUBLIC RELEASE