Hard and normal anode
Aluminum and its alloys are highly efficient in the industry due to their good physical properties such as low density, good electrical and thermal conductivity and high special strength, but their hardness, wear resistance and low corrosion limit their use for many engineering applications. Also, common surface engineering methods for steels such as physical vapor deposition coatings (PVD), steam chemical deposition (CVD), carbon and nitrogen penetration methods, and various common plating methods for aluminum alloys are not applicable. The most important and practical surface engineering method for aluminum alloys is anodic oxidation methods, including normal and hard anodizing. Anodizing is a surface operation and electrochemical process that converts the natural aluminum oxide layer and its alloys into a thicker oxide coating with remarkable engineering properties by selecting the appropriate electrolyte and anode to place the piece under temperature control, current intensity and voltage. Creating a positive and negative pole, applying an electric potential difference, water electrolysis, and releasing oxygen creates an oxide layer of anode metal located on its surface. In the anodizing process, important factors affect the properties of the formed oxide layer, which are: anode voltage and its time, the shape of the applied pulse wave, the electrolyte composition and its temperature. By changing each of these factors, it is possible to change the type of coating (hard and normal) and its physical, mechanical and chemical properties. Coated parts can be a good alternative to steel, brass or even ceramic parts. With its good technical knowledge and advanced equipment, including switching rectifiers, Isatis Nanocarco Company is able to have precise control in creating oxide nanostructured coatings with advanced engineering properties on various aluminum alloys. In this company, it is possible to cover with uniform thickness throughout the parts with different sizes and shapes (complex) in the range of thicknesses from 1 to 100 micrometers.