Accession Number:

ADA210366

Title:

Capacitive Energy Storage at Cryogenic Temperatures. Phase 2

Descriptive Note:

Final rept. 1 Jan 1986-31 Dec 1988

Corporate Author:

CERAM PHYSICS INC WESTERVILLE OH

Personal Author(s):

• Clark, C. F.

Report Date:

1989-02-12

Pagination or Media Count:

148.0

Abstract:

The primary goal of this Phase II program was to improve the dielectric breakdown strength of ceramic multilayer capacitors MLCs in order to improve capacitive energy storage at liquid-nitrogen temperatures. A secondary goal was to explore the reproducibility of a field-enforced state- switching effect discovered in the Phase I program. The ceramic composition involved in these programs is designated as CPN17 and has a dielectric constant in the range 8,000-10,000 at 77 K. Several variations in conventional ceramic- processing parameters were studied, leading to systematic improvements in the breakdown strength at 77 K 160 to 250 to 400 kVcm.

Descriptors:

• *DIELECTRIC STRENGTH
• *BREAKDOWN(ELECTRONIC THRESHOLD)
• *CRYOGENICS
• *ENERGY STORAGE
• *CERAMIC CAPACITORS
• *DIELECTRIC PROPERTIES
• *CERAMIC MATERIALS
• CONSTANTS
• LIQUID NITROGEN
• REPRODUCIBILITY
• LAYERS
• LOW TEMPERATURE
• TEMPERATURE

Subject Categories:

• Electrical and Electronic Equipment
• Energy Storage
• Electricity and Magnetism
• Thermodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE