Increasing aluminum’s natural corrosion resistance.
Anode coatings are natural insulators while the all aluminum is electrically conductive. Precision masking is the isolation of designated areas from the anodizing process. This provides the best of both worlds, high electrical isolation and electrical conductivity at the same time.
We routinely use various masking agents to isolate certain sections of a complex precision machined piece of aluminum. This way, that section of the part will remain electrically conductive, even though most of the part is anodized and therefore not electrically conductive.
SELECTIVE ELECTRICAL CONDUCTIVITY
The electrical conductivity is achieved in many ways but the foundation is the same for all methods. Once a few details are known, we can suggest the best method for satisfying your needs.
If the electrical conductivity needed is going to be static, then a clear chemical conversion film, a gold chemical conversion film, or a deposited metallic film such as gold will satisfy the demands of the application. For more detailed information please contact us, so that we can suggest the optimum combination of options.
Typically we start with a clear chemical conversion, precision mask the necessary area and then place a metallic coating on top of the base material to protect against corrosion while at the same time be hard enough to withstand the wear associated with a dynamic connection. For more detailed information please contact us, so that we can suggest the optimum combination of options.
Anodized aluminum dissipates heat better than bare aluminum. Black dyed anodize dissipates heat slightly better than clear anodize. This is why heat sinks are usually anodized and dyed black for improved heat dissipation.
Adhesion best of post anodic coatings.
Not only in accordance with the customer requirements in the salt spray, film thickness, but also to meet the RoHS environmental policies instead of chromates.