Effects of Alloys and Surface Treatments on Electrical Breakdown Strength of Water and Water Mixtures
Abstract
Many pulse power machines use purified water as the high voltage dielectric in intermediate storage capacitors. Another candidate dielectric liquid for future pulse power devices is a mixture of ethylene glycol and water, because this mixture can extend the intrinsic time constant from hundreds of microseconds to tens of milliseconds. Longer intrinsic time constant eases the requirements for the charging portion of the pulse power train. An important characteristic of the liquid dielectric is the energy density. Since energy density varies as the square of the electric field, electrical breakdown is an important physical phenomenon for dielectric mixtures. Our paper examines the effect on breakdown of several alloys and surface treatments for stainless steel and aluminum electrodes in subzero temperature mixtures of ethylene glycol and water and in near zero temperature purified water.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1985
- Accession Number
- ADA635808
Entities
People
- D. B. Fenneman
- R. J. Gripshover
- V. H. Gehman Jr.
Organizations
- Naval Surface Warfare Center Dahlgren Division