PEM for Production of Fluorinated Barium Titanate Capacitors for Operation to 200 C
Abstract
The improvement of titanate dielectrics by high temperature fluorination presents a problem in composition and treatment involving narrow working limits. For many compositions the fluorination treatment is critical and one can easily over or under fluorinate. Capacitor discs of high K composition were fluorinated by pushing setters containing the discs through a tunnel kiln treated with a single charge of volatile fluorides. This resulted in a complete range of fluorination treatment during the run. Continuous fluorination runs were made by placing a smaller amount of volatile fluorides on each setter during the run. This resulted in a continuous output of discs having the improved properties attributed to fluorination. Insulation resistance measurements of the well fluorinated discs at elevated temperatures showed a marked improvement over those which were not fluorinated. Optimum fluorination results in a chrome yellow color in the dielectric, while over fluorination gives a bluish color.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1961
- Accession Number
- AD0267940
Entities
People
- L. E. Nordquist
Organizations
- Cornell Dubilier