What is Plasma Electrolytic Oxidation?

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What is Plasma Electrolytic Oxidation?

An innovative, super hard surface coating technology for lightweight alloys

Electrolytic oxidation methods have been prevalent for a long time. Anodising and electroplating based upon the same fundamental chemical principles. Yet it's theses fundamental chemical principles that hold these techniques back.

In modern day, performance-led applications, light alloys must use innovative surface coats. Enhancing performance necessitates a fresh approach to maintain performance.

Plasma Electrolytic Oxidation (PEO) is an innovative bath-based surface coating. Introducing plasma in the formation process circumvents many of the issues with anodising. PEO coatings provide:

  • 4x more wear resistance than in hard anodising techniques
  • 10x harder coating than 5140 steel
  • Superior substrate-coating adhesion
  • Suited to corrosion resistant treatments such as sealers, polymers and other topcoats
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Plasma Electrolytic Oxidation

Alloys of high Al, Mg and Ti composition can benefit from the superior hardness, wear resistance, and corrosion resistance capabilities of PEO.