ELECTRICAL IMPEDANCE OF ALUMINUM SURFACE OXIDE,
Abstract
The impedance of surface oxides, present after etching or other treatment of aluminum, is shown to be characteristic of that of amorphous dielectrics with a frequency independent dielectric loss. Results with both electrolytic solution contacts and evaporated metal contacts indicate a thin barrier layer covered by a thicker permeable layer as occurs on a porous, anodized surface. Methods for determining the dielectric constant and the roughness are developed. The dielectric loss is related to hydration of the surface. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1969
- Accession Number
- AD0697117
Entities
People
- Alan W. Smith
- Ann Pollock
Organizations
- Boeing