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Welcome to Vyas Metal & Co

Vyas Metal & Co with high level of experience ensures and fully understands and are able to supply corrosion protection equipment in accordance with the most stringent requirements as demanded by the Industry sectors.

Vyas Metal & Co remains committed to providing good quality products and services to its customers on time and at competitive prices.

Vyas Metal products are available through its office in India and Singapore for rest of the world (Middle East, Colombo and China).

The safe and effective method of Cathodic Protection

Corrosion is one of the greatest enemies of the ship and its machinery. It is also the toughest enemy to fight against for the people working on the ship. Iron is one substance which is used in abundance on the ship. From the main body of the ship to the smallest equipment used in operations, iron makes its presence felt in almost every type of equipment used on board the ship.

A ship is continuously in contact with water and moisture laden winds which makes it highly susceptible to corrosion. The other body of the ship (mainly hull) is continuously in contact with water, making it extremely vulnerable to corrosion. It is for this reason sacrificial anodes are used to protect the parent material. In this article we will have a look at the working of sacrificial anodes on ship.

Sacrificial anodes works on the principle similar to electrolysis, according to which if an anode and a metallic strip are dipped in electrolytic solution, anode electron will dissolve and deposit over the metallic strip and make it cathode.

In the case of a ship, sea water acts as an electrolyte and transfers the electrons from the anode by oxidizing it over the steel plate and making a protecting layer. If the metal is more active it will be easily oxidized and will protect the metallic compound by making it act as cathode. The anode will corrode first sacrificing itself for the other compound and it is thus called sacrificial anode.


Electromotive series or galvanic series metals Anode materials

Magnesium (Mg), Aluminium (Al), Zinc (Zn), Chromium (Cr), Iron (Fe), Nickel (Ni).

These anodes are used in various applications such as :

1) Protecting the ship’s hull.
2) Protecting the ballast tanks corrosion.
3) Protecting the heat exchangers.
4) Sea chests