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.