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Let's talk about science: how ships protect against corrosion

Let's talk about science: how ships protect against corrosion
In the heading "Let's talk about science" we will consider the option of combating corrosion in the fleet.

One of the problems, which the fleets of all countries of the world, without exception, face, those with, – corrosion. Ship hulls, boats, auxiliary vessels, bilge compartments - corrosive due to the use of traditional materials. It would seem, the issue is solved simply - the construction of warships and auxiliary ships for the Navy (VMS) using composite materials - materials, the risk of corrosion is minimized. However, this is a huge amount of money and the actual need to carry out a huge work to replace the entire crew, which means a huge time.

Therefore, today other options are offered for protection against corrosion., rather than reducing everything to using composites.

Let's talk about science: how ships protect against corrosion

One of the options for protecting ships from the effects of corrosion is special ship complexes, which consist of several basic elements.

Among the elements is a ship (sacrificial) anode, ES reference electrode (silver chloride), as well as IPKZ – impulse converter for cathodic protection.

In the creation of such products in Russia are involved, eg, SIC specialists “Kurchatov Institute”, PSS.

Such a system allows for electrochemical protection of ship hulls by a potential shift.. The surface of the ship in this case is equipotential (the potential is the same in all areas), and on each of the surface areas, the so-called cathodic process is carried out.

The rated output current in this marine corrosion protection system reaches a value of 160 And with a ripple coefficient no more 1 percent. The efficiency is at least 90%.

On the components of the marine corrosion protection system

The ship anode is made of titanium alloy VT1-0 with a galvanized polymer coating.

Silver chloride reference electrode is used to obtain data on potential with ohmic component and polarization potential without such component.. We are talking about the potential of metal structures. These electrodes are designed for a nominal operating elevated temperature 45 degrees Celsius, reduced - 0 Celsius.

It is worth noting, that cathodic protection is actively used not only for the protection against corrosion of ships, but also to prevent from harmful corrosive effects, eg, metal pile – bridge supports.

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