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12 Jun 2025

PPG Conductive and Corrosion Resistant Coatings

PPG Aerospace Stand: 1161
PPG Conductive and Corrosion Resistant Coatings
PPG Pt Coating for PTL and BPP

PPG Conductive and Corrosion Resistant Coatings

PPG has developed a method to apply low-density precious metal coatings on conductive substrates, optimizing cost, conductivity, and corrosion resistance for electrochemical systems.

Performance evaluation: To evaluate the performance of our platinum coatings, we used PPG MICROGRID® expanded titanium foils (product code: 10Ti12-125) as test substrates. These foils are ideal for this test as they require high electrical conductivity and corrosion resistance while functioning as flow fields within PTL assemblies. In our tests, we subjected PPG Microgrid expanded titanium to thermal oxidation by exposing them to 250 °C heat under air for 5 days. This method produces a clear visible signal for uncoated titanium materials, as a yellow hue develops due to the formation of an undesired, insulating titanium dioxide layer as shown in Figure 3. In contrast to the uncoated material, both PPG Pt-coated and Pt electroplated samples retained their dark, non-lustrous appearance, indicating a high level of corrosion resistance. PPG’s coating not only matches the performance of traditional electroplating but does so with 77% less platinum. This reduction in platinum usage results in an excellent balance of cost efficiency and performance for our customers.

 

For an evaluation of your substrate compatibility with PPG-Pt coatings reach out to PPG at DBAdams@ppg.com for an introductory conversation.

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