Anodizing solutions are well-known for producing pores in the coating of the anodizing aluminum. These pores absorb dyes and also retain lubricants, if any are applied. In addition, they also provide areas through which the metal can corrode easily. To increase the corrosion resistance and dye retention, sealing is usually applied. Several sealing methods that are used include the use of boiling water, potassium dichromate and nickel acetate. Writer Bio
