Titanium anode for cathodic protection industry

Using plus cathodic polarization to reduce or prevent metal corrosion is called cathodic protection that could be achieved by two methods: impressed current protection and sacrificial anode protection.

Impressed current protection makes the whole surface of the protected metal structure work as cathode, source negative pole will be connected to the metal while source positive pole connected to auxiliary anode to protection a metal equipment. Cathodic polarization occurs when current of auxiliary anode goes through the electrolyte solution and concentrates on the metal cathode, the current goes back to the source and the total potential of the metal will be reduced. If the protective current is big enough, anode of the metal structure becomes insoluble, meanwhile, the cathodic reduction reaction only occurs on the metal surface, the impressed current could achieve full protection. Anode materials develop and become various under a variety of anode working conditions. MMO titanium anode that using titanium as substrate and high catalytic activity of platinum group metal oxide as the coating with good electrical conductivity, small output resistance and good formability without corrosion applied widely in seawater, fresh water and soil environments. The protected metal connecting metal with smaller negative potential to form anode and the protected metal in the electrolyte solution to form a big source, this is called sacrificial anode protection, current flows through anode, electrolyte solution and then goes to the metal equipment to make metal equipment cathodic polarization protection.

Normally, titanium anode in the soil bed works with current density of 100A/m2, life span of 20 years and consumption rate of 0.1mg/A. With 100A/m2 and more than 20 years’ life span in the shallow soil and deep soil environments and without anodic passivity and dissolution, titanium anode is the most ideal auxiliary anode material.

Advantages:

1) Dimensional stable

2) Light weight, convenient for daily operation

3) Long life span, reusability of titanium substrate, low cost

4) Low coating resistance of 7—10Ω.m

Chlorine evolution polarizability≤40mv strong resistance to acid



Applications:

Cathodic protection for underground metal structure

Cathodic protection for vessel

Cathodic protection for steel structure under seawater

Cathodic protection for metal in soil environment

Welcome to contact me if you have any requirements of titanium anode.

e-mail :kathy@anode.cc

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