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Tartaric Acid Anodising

Tartaric Sulphuric Acid (TSA) anodising is primarily for corrosion protection. Airbus recommend this process (or Phosphoric Anodising) to replace chromic acid anodising. Tartaric acid is added to sulphuric acid anodising baths to generate porous anodic film that provides corrosion resistance to practical aerospace alloys and reduces the environmental impact of the traditional chromic acid anodising process.

The main managed properties are corrosion resistance, paint adhesion, fatigue, and quality of the coating. The key technical requirement for the anodising processes of aluminium is a balance between three criteria:

  • The adhesion with a homogeneous porosity,
  • The corrosion resistance depending on the porosity,
  • The fatigue properties.

With this process, care must be taken regarding fungal contamination: The TSA/PSA electrolytes are less toxic than CAA and fungus growth in the treatment line can be an issue. The installation of preventive measures (e.g. filters, UV-lamps) is recommended.

Tsa Capabilities

  • AIPS 02-01-003 Airbus
  • And many others

Related Finishes

We have a good working, professional relationship and SWMF endeavour to achieve our aims and aspirations.
They are based in a prime location and they have good technical capabilities.
They are the most cost effective and have a quality finish
Their prices are good and their delivery/lead times are excellent
We only use South West Metal Finishing. They provide everything we need and have no complaints.