Anodize
Anodizing is an electrolytic process that produces a relatively inert coating on a metallic surface. When aluminum alloys are anodized, an aluminum oxide layer is generated and used as the coating. It is the stability of the aluminum oxide that accounts for all of the coating’s protective properties.
During the anodizing process, the aluminum oxide develops pores, creating a final coating whose outer layer is permeated with uniformly dispersed porosity. This porosity must then be sealed to further enhance the corrosion resistance of the coating.
Colored Anodize
Due to the porous nature of the Anodic coating dyes can be introduced to achieve a variety of colors. Parts will be sealed post dying to improve light-fastness.
Dav-Tech Anodizing Properties
| Coating | Typically transparent, good for surfaces that wil be color dyed |
| Thickness | .0001″ to .001″ |
| Corrosion Resistance | Excellent |
| Reference Specifications | Applicable specifcations include:
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| Compliance |
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Benefits of Dav-Tech Aluminum Anodizing
Dav-Tech aluminum anodizing offers several benefits:
Creates a clean surface by sealing the substrate
Excellent corrosion resistance
Can be used as a non-conductive finish
Can be dyed or colored to improve product appearance
Close dimensional control
Excellent primer for paint coatings
Planning for Aluminum Anodizing
Most anodizing problems are due to improper alloy selection. When choosing an aluminum alloy to anodize, remember that the purer the aluminum, the more uniform in color and thickness the coating will be. Non-aluminum alloying components, such as copper and silicon, have an adverse effect on the anodizing process and may produce coatings that appear shaded or discontinuous.
Dav-Tech’s expert technical staff can recommend alloys that will maximize the required anodic properties. Where the selection of material is limited, we can develop special process procedures to ensure the anticipated performance.
Our cost-effective approach to resolving your finishing challenges consistently yields a high-quality product at a competitive price.