Sealing process

This process is to seal off microscopic pores of anodic oxide film.

In this process there are pressurized steam sealing, boiling water sealing and added nickel acetate sealing, but 2 step sealing combined with added nickel acetate + boiling water is commonly used.

Cross-sections of sealed oxide film are as shown below pictures taken by electronic microscope.

  • [Picture-1] Cross-section of unsealed oxide film (x70,000)
  • [Picture-2] Cross-section of sealed oxide film (x150,000)
Process outline

Process outline:Process of anodizing

Process outline:Process of complex film

Process outline:Process of painting

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