The MMO (Mixed Metal Oxydes) coating is a homogenous blend of Mixed Metal Oxides.

This coating has the following properties :

  • A cristalline structure which enables MMO coatings to be ceramics which are highly resistant to mechanical forces.
  • A high metallic conductivity which justifies their use as an electrode coating.
  • A high specific surface which allows increased and homogenous current densities to be obtained.
  • The mixed metallic oxides also show excellent resistance to acid electrolytes.
  • Reduced sensitivity to the residual ripples from the rectifier.
    Unlike the platinum coating, the MMO coating is little affected by power supply ripples. A 5% ripple causes a variation of only 5mV in the interface potential.