Breakdown in high voltage, high energy density multilayer ceramic capacitors

Author

Amanda L. Young

Abstract

"Causes of breakdown, both mechanical and electrical, in high voltage, high energy density, BaTiO₃ multilayer ceramic capacitors were studied. The flexural strength of the capacitors was 96 +/- 13 MPa. Failure was due to surface defects or pores close to the surfaces of the samples. The dielectric breakdown strength of the samples was 181 kV/cm. The causes of breakdown were either field enhancements due to electrode end effects or pores between the dielectric and electrode layers...The one common source of failure was porosity although it was located in different regions of the capacitors. Liquid-phase sintering can be used to eliminate porosity and therefore was chosen to improve the electrical and mechanical strengths of the capacitors"--Abstract, page iv.

Advisor(s)

Schwartz, Robert W.
Hilmas, Greg

Committee Member(s)

Huebner, Wayne
Brow, Richard K.
Dharani, Lokeswarappa R.

Department(s)

Materials Science and Engineering

Degree Name

Ph. D. in Ceramic Engineering

Publisher

University of Missouri--Rolla

Publication Date

Spring 2007

Journal article titles appearing in thesis/dissertation

• Mechanical vs. electrical failure mechanisms in high voltage, high energy density multilayer ceramic capacitors
• Effect of liquid-phase sintering on the breakdown strength of barium titanate
• Effect of liquid-phase sintering on the electrical properties of BaTiO₃
• Mechanical vs. electrical failure mechanisms in high voltage, high energy density multilayer ceramic capacitors fabricated using liquid-phase sintering
• Reactions and devitrification during liquid-phase sintering of BaTiO₃

Pagination

xv, 173 pages

Note about bibliography

Includes bibliographical references.

Rights

© 2007 Amanda Young, All rights reserved.

Document Type

Dissertation - Citation

File Type

text

Language

English

Subject Headings

Breakdown (Electricity)Ceramic capacitorsEnergy level densitiesPhase rule and equilibriumSinteringStrength of materials

Thesis Number

T 9191

Print OCLC #

191050626

Recommended Citation

Young, Amanda L., "Breakdown in high voltage, high energy density multilayer ceramic capacitors" (2007). Doctoral Dissertations. 1743.
https://scholarsmine.mst.edu/doctoral_dissertations/1743