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Corrosion Resistant Anode PT-DSA

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Product Highlights

  • Excellent corrosion resistance
  • Environmentally Friendly
    Conventional stainless steel anode releases heavy metals such as Fe, Ni, Cr, etc during its use. PT-DSA elutes virtually no heavy metals.
  • Prolong membrane electrode life
    The releasing of the heavy metal from the stainless steel anode contributes to membrane clogging. When PT-DSA is used as anode for the membrane electrode, its low ellution rate significantly reduces the membrane clogging, and lenthens membrane electrode product life.
  • Easy handling
    PT-DSA weighs only 1/5 compared to the stainless steel anode. It is also mechanically stronger than some ceramic anodes that easily break/crack.

Design Details

PT-DSA has a titanium substrate which is coated with precious metal oxide. The Precious metal oxides such as iridium oxide and ruthenium oxide have very high corrosion resistance while having very low electrical resistance, creating an ideal protective anode coating suitable for heavy duty application.
The surface of the titanium substrate is first treated, then coated with solution containing perious metal, and finally it is baked to form the coating. This process is repeated many times to achieve excellent anode properties. 

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Parameters SUS316(for comparison) PT-DSA
Material  SUS316 Titanium substrate with iridium oxide
Corrosion Rate  5~200 x 10-6 g/C 1~10 x 10-8 g/C
Anolyte Conductivity   100µS/cm 以下 1000~3000µS/cm
Heavy metal in anolyte  Cr, Ni, Fe, etc trace amout
Product Life*  2~5 years 7~10 years
Mechanical Strength  Very high high
Size & Shape  48.6Φ Pipe  27.2Φ Pipe
*Product life of an anode depends heavily on the operating conditions. The numbers listed above are not guaranteed.

Application

Use as bare anode
Effective E-Coat paint acid (neutralizer) balance requires a proper ratio of both membrane electrodes and bare electrodes. If too many PT- AN(acid-removal type) membrane electrodes are used, the acid level becomes too low in the E-Coat bath. Bare anodes provide electrical current without removing acid, thus introduction of bare anodes helps to balance the acid level.

Use as anode inside membrane electrode
PT-LAN (low acid removal type): Prevents sludge build-up on anode and help balance the neutralizer.
PT-AN (acid removal type): Able to operate under higher anolyte conductivity and reduce the anolyte disposal to 1/10th. Very little release of heavy metal simplifies anolyte disposal. 

Versatile anode positioning 

PT-DSA's light weight combined with its mechanical strength makes it possible to install the anode in a variety of positions. The ability to install the anode in various positions and target certian parts of the work is particularly advantageous for highly demanding coating jobs such as car bodies. 
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Notes

Important points when installing
① Please use PT-DSA in conditions below 50A current per 2m/pipe. When exceeding 50A per 2m/pipe, please increase the number of PT-DSA pipes and distribute the current load.
② PT-DSA manifests its corrosive resistance when used as an anode. When operated as a cathode, it will generate hydrogen on its surface and break the layer of the precious oxide coating. Use caution where PT-DSA is installed.

Handling precautions
Although PT-DSA is light weight and easy to handle, the precious metal coating layer is not strong against mechanical impact and scratching. Please handle with care, and take precautions on points listed below.
① Protect from strong impact
② Protect from impact against hard objects
③ Do not rub or scratch with metal objects
④ Wear gloves when carrying the anode portion
⑤ Protect from oil
⑥ Do not expose to acidic atomsphere when storing
⑦ Do not power-wash
To Clean off the PT-DSA electrode portion, please use Butyl cellosolve.