Insoluble Titanium Anode for Trivalent Chromium Plating
Trivalent chromium electrolytes have advantages over those of hexavalent chromium in terms of health and safety and toxicity to the environment. However, selection of appropriate anodes is significant. Since trivalent chromium plating solution is sensitive to impurities and unstable, insoluble anodes used should be used in the plating bath.
Insoluble anode does not dissolve or is substantially insoluble in the matrix of the plating bath, it includes lead, lead alloy, platinized titanium anodes, titanium anode or metal anodes comprising a surface coating comprising iridium oxide, ruthenium oxide or mixed iridium tantalum oxide.
UTron manufacture insoluble titanium anode for trivalent chromium plating in sulfate based electrolytes, it utilise iridium tantalum oxide coating in nanoparticles. It was found to have a low oxygen over potential (thus facilitating oxygen liberation at the lowest possible anode potentials) and do not produce detachment of noxious gases and do not cause safety and occupational health risks.
Anode material: Titanium;
Coating: Iridium tantalum(IrO2 Ta2O5);
Electrolyte: Sulfate;
Temperature: 55 to 65°C;
pH: 3 - 4;
Current density: 2 -10 Amps;
Service life: 2-4 years.
Feature:
Eliminates a source of impurities;
No sludge to treat;
Improves product quality;
Low maintenance cost;
Low power consumption;
Higher productivity.
Application:
Metal electrowinning;
Cathodic protection;
Electrosynthesis;
Wastewater treatment;
Oxygen evolution reaction.
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