Characteristics of barrier anodized coatings on 6061 aluminum
The characteristics of anodic coatings on 6061 aluminum are evaluated. These coatings were grown using a high voltage (950 V), low current density (1 to 2 mA/cm/sup 2/), high resistivity (45 to 75 k..cap omega.. cm) process, in an electrolyte consisting of a solution of ammonium tartrate in ethanol. Coating properties which were subsequently characterized include thickness, density, morphology, entrained and adsorped impurities, dielectric constant, breakdown strength, and leakage current. A comparison of the coatings on 6061 aluminum with coatings grown using similar conditions on commercially pure 1100 aluminum indicates that the alloying components in 6061 aluminum affect subsequent coating morphology and dielectric properties. The coatings displayed useful dielectric properties. The fact that these coatings were grown on 6061 aluminum, which is a common industrial alloy used because of its relatively high strength and machinability, may recommend these coatings for a variety of practical applictions.
- Research Organization:
- Sandia National Labs., Albuquerque, NM (USA)
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 5266923
- Report Number(s):
- SAND-82-0692C; CONF-820412-2; ON: DE82011944
- Country of Publication:
- United States
- Language:
- English
Similar Records
Barrier anodic coatings formed on 6061-T6 aluminum alloy in electrolytes containing different ethanol to water ratios
Effect of mill run and temper variations on barrier anodic film formation on 6061 aluminum alloy
Related Subjects
360101* -- Metals & Alloys-- Preparation & Fabrication
360104 -- Metals & Alloys-- Physical Properties
ALUMINIUM
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
ANODIZATION
CHALCOGENIDES
CHEMICAL COATING
COATINGS
CORROSION PROTECTION
DEPOSITION
ELECTRICAL PROPERTIES
ELECTROCHEMICAL COATING
ELECTRODEPOSITED COATINGS
ELECTROLYSIS
ELEMENTS
LYSIS
METALS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SURFACE COATING