Substrate :Gr1/Gr2( Titanium)

MMO Coating:RuO2+IrO2+Pt+X

Current Density:<5000A/MContents of Precious

Metals：≥10g/mContents of HCl:<20%Working

Temperature:<80℃Contents of F Ion<50mg/LPh Value:1-12

Some problems when using the Ru-Ir coated titanium titanium need to know:

The ruthenium-iridium coated titanium anode has a certain period of working life during the electrolytic operation. When the voltage rises high and there is no current to pass through, the ruthenium-iridium coated titanium anode becomes useless. This phenomenon is called anode passivation.
Ruthenium-iridium coated titanium anode passivation has several reasons.
a. Peeling of coating
The Ru-Ir titanium anode consists of a titanium substrate and a ruthenium-iridium coated titanium active coating. Only the ruthenium-iridium coated titanium active coating plays the role of electrochemical reaction. If the coating and the substrate are not firmly combined, they will fall off the titanium plate substrate and fall off. To a certain extent, the Ru-Ir coated titanium anode becomes useless. (Divided into crushed peeling, convex belly peeling and cracking peeling)
b. RuO2 coating dissolves
Reducing the occurrence of oxygen can slow down the formation of oxide film. When the total current density of electrolysis increases, the chlorine generation rate increases much more than the oxygen generation rate, so the increase in current density is beneficial to the reduction of the oxygen content in chlorine. The titanium substrate is pre-oxidized to form an oxide film first, which can increase the binding force of the ruthenium-iridium-titanium active coating and the titanium substrate, make the coating firm, prevent the shedding and dissolution of ruthenium, but also cause ruthenium-iridium coated titanium anode ohmic drop increases.
c. oxide saturation
The active coating is composed of non-stoichiometric RuO2- and TiO2 and belongs to oxygen-deficient oxides. It is the non-stoichiometric oxide that really acts as the activation center for chlorine discharge. The more such oxides, the more active centers, and the better the activity of the ruthenium-iridium-titanium anode. The conductivity of ruthenium-iridium-titanium-coated anodes is the performance exhibited by the distortion of n-type mixed crystals from isomorphous RuO2 and TiO2 after heat treatment. There are some oxygen vacancies. When these oxygen vacancies are filled with oxygen, the The potential rises rapidly, leading to passivation.