Plasma Electrolytic Oxidation (PEO) is also known as Micro-arc Oxidation (MAO) or Electrolytic Plasma Oxidation (EPO). It is a surface finishing method for creating oxide-ceramic layers on light metals such as aluminium, magnesium and titanium.

Comparing with Anodising, PEO has below advantages:

  • Simplified pre-treatment;
  • Superior corrosion resistance performance;
  • Environmental friendly coating process;
  • Electrically insulated.
Plasma Electrolytic Oxidation (PEO) process