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Electrodes
Platinized Niobium Metal Anode
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Platinum is a precious metal having very good physical and chemical properties such as
: : high corrosion resistance
: : thermal conductivity
: : catalytic nature
As it is very expensive, platinum cannot be used in its solid form as an anode. So that Platinised Anodes ( Pt Anode ) are produced by plating platinum ( Pt ) on a specially treated precious metal ( Titanium / Niobium / Tantalum / Zirconium ) substrate by means of electrodeposition process.
So, platinized anodes are economical as well as it retains the superior physical and chemical properties of platinum.
According to the substrate material used, the platinized anodes are called as
: : platinized titanium anode
: : platinized niobium anode
: : platinised zirconium anodes
: : platinised tantalum anodes
TiTaN's Platinized niobium metal anode ( PLANMA ) is the most suitable anode to the electrolytes having fluoride.
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Lead Dioxide Graphite Anode
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Graphite substrate lead dioxide anodes ( GSLD ) can be used in chlorate and perchlorate cells instead of platinum anodes, but if chromates or dichromates are present in the cells then the current efficiency will be reduced drastically.
GSLD anodes are prepared by electrolytically coating lead dioxide on a graphite substrate. This substrate is cheap and gives reliable electrical connection. But if the coating fails, the substrate material will be distroyed very quickly.
TiTaN 's Lead dioxide coated graphite anode ( PbO2 graphite anodes ) are known as " LEDGA " . Generally these anodes are called GSLD anodes.
TiTaN 's supply range includes plate andoes and rod anodes.
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Mixed Metal Oxide Coated Anode
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- MMO Coated Anodes are manufactured by coating a mixture of precious metal oxides on a specially treated precious metal. The coated substrate undergoes multiple thermal treatments at elevated temperatures to gain good bonding properties between the substrate & coating. This bonding property increases the lifetime of anodes.
- Titanium is widely used as substrate material for its well-known characteristics like, resistance to corrosion, resistance to chemical attacks and its high mechanical strength.
- TiTaN’s Tantalum, Niobium and Zirconium anodes are also used globally for different applications.
- TiTaN’s MMO coated anodes are in high demand in the global market for its excellent electrolytic properties and low wear rate of the coating.
- NB: Coating wear rate will vary according to the resistivity and the chemical property of the electrolyte.
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Platinized Anodes
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TiTaN 's platinized anodes are widely used for electroplating and electrowinning industrila applications.
Platinum is a precious metal having very good physical and chemical properties such as
- high corrosion resistance
- thermal conductivity
- catalytic nature
As it is very expensive, platinum cannot be used in its solid form as an anode. So that Platinised Metal Anodes ( Pt Anode ) are produced by electroplating platinum ( Pt ) on a specially treated precious metal or activated ( Titanium / Niobium / Tantalum / Zirconium ) substrate by means of electrodeposition process.
Thus electroplated metal anodes are economical as well as it retains the superior physical and chemical properties of platinum.
According to the substrate material used, the platinized anodes are called as :
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Sacrificial Anode
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The principle of cathodic protection is in connecting an external anode to the material to be protected from corrosion and passing of an electrical DC current. So that all area of the metal surface become cathodic and therefore do not corrode. The external anode may be a galvanic (sacrificial) anode or it may be an impressed current anode where the current is impressed from external dc source.
TiTaN designs, manufacture and supply anodes for
- 1. Impressed Current cathodic protection system and
- 2. Sacrificial (galvanic) cathodic protection system
Sacrificial (galvanic) cathodic protection anodes are cheaper than impressed current cathodic protection anode. These anodes are otherwise known as galvanic cathodic protection anode.
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Lead Dioxide Metal Anode
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TiTaN 's " LEDMA " is otherwise known as Lead dioxide metal anode (PbO2 anodes). Lead Dioxide Anodes are well known traditional industrial anodes for bromate / per bromate / iodate / sulphate / per sulphate / chlorate / perchlorate production.
Lead dioxide anode is an economical alternative to the platinized anode. PbO2 anodes are mainly used in the electrolytic production of perchlorates and chlorates.
These lead dioxide anodes are produced by coating lead dioxide on a substrate material by means of electrodeposition method.
According to the substrate material used, PbO2 anodes are classified as :
: : graphite substrate lead dioxide anode
: : titanium substrage lead dioxide anode
: : ceramic substrate lead dioxide anode
: : substrate-less lead dioxide anodes etc..
Graphite substrate lead dioxide anodes can be used in sodium / potassium chlorate and sodium / potassium perchlorate cell ( electrolyzer ) insted of platinum anodes, but if chromates are dichromates are present in the cells ( electrolyzer ) then the current efficiency will be reduced drastically.
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