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NMT Electrodes

Platinum Plating

NMT Electrodes is the only company in Southern Africa and Australia that produces Platinised Titanium Anodes.

Our Platinised Titanium Anodes have a proven track record in applications such as:

  • Cathodic Protection
  • Sodium Hypochlorite
  • Electroplating
  • Electrosynthesis
  • Electrodialysis

We have the technology to platinum plate titanium substrates in the form of wire, rod, tube, plate and mesh.

Furthermore, we have the ability to manufacture complex fabricated anodes.

Due to our proven plating technology, NMT Electrodes' Platinised Titanium Anodes have become the anodes of choice.

The ZA technology employed by NMT Electrodes results in coatings which provide the following attributes:

  • Higher levels of adhesion of the precious metal coating
  • Better uniformity of coating
  • Greatly improved resistance to acid attack
  • Resistance to interface degradation by deposits

The external surface of all platinised titanium anodes is essentially pure platinum which exhibits all the normal characteristics of the wrought metal as far as corrosion behavior is concerned. The secret of the quality of a platinised anode lies in the nature of the interface between the platinum and the titanium. It is well known that normal untreated titanium presents a very inert and intractable surface when it comes to applying precious metal coatings. That this problem was overcome to an adequate extent is demonstrated by the wide acceptance of platinised titanium anodes in different industries throughout the world. Although there are still many platinum electroplated anodes produced without an adequate interlayer, they are used for less demanding applications.

The shortcomings of such anodes are that the coating has pores and cracks which allow access of the surrounding electrolyte to the titanium substrate. This porosity increases during the life of the anode as the platinum coating wears away, thus allowing increased exposure of the substrate, formation of internal crevices under the coating and progressive loss of points of mechanical attachment between the coating and the substrate.

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