Corrosion of metals, how to protect against it. (1980)

Power lines.

The metal structure is crumbling.

Metallurgical production.

The nail is destroyed in an aggressive environment.

The destroyed nail.

Samples of parts destroyed by corrosion.

The concept of corrosion.

Heating of parts in the furnace.

Scale on metal.

Scale on metal is an example of mechanical corrosion.

Rolling mill.

Types of corrosion associated with exposure to an aggressive environment.

Atmospheric, underground and underwater corrosion.

Types of corrosion damage.

Uniform, uneven corrosion and corrosion by spots, ulcers.

Subsurface corrosion, spot or pitting.

Structural and selective corrosion.

Intercrystalline corrosion under an electron microscope.

Consequences of covertly occurring corrosion processes.

The concept of chemical corrosion.

Cartoon explaining the phenomenon of gas corrosion.

With such corrosion, an oxide film is formed.

Cartoon explaining the basis of gas corrosion.

The concept of electrochemical corrosion.

Experience with galvanic cells.

Demonstration on the layout of the electrochemical corrosion process.

The results of the experiment.

Zinc anode with elements of corrosion.

Cartoon explaining the phenomenon of atmospheric corrosion.

In some cases, when a dense oxide film occurs, the corrosion process subsides.

Experience with the impact of nitric acid solutions on copper and steel.

Demonstration of the passivation process on the atomic lattice model.

Observation of the passivation process in laboratory conditions.

The use of passivation process in production.

One of the types of metal corrosion protection is passivation.

Laboratory for the study and creation of corrosion-resistant materials.

Parts made of various alloys undergoing outdoor testing.

One of the ways to protect against corrosion is to obtain special alloys.

The doping process.

This process is important in precision casting.

Experience with tungsten filament.

Unprotected tungsten filament burns out quickly due to corrosion of tungsten in the atmosphere.

The thread protected by an inert gas continues to burn.

Inhibition.

Experience with a metal rod.

When an inhibitor was added to an acidic medium, the metal stopped corroding.

A cartoon explaining this process.

Metallic and non-metallic coatings that protect metal from corrosion.

Hot-dip galvanizing.

Protection by metallization.

Metal blacking method.

Bimetals under the microscope.

Laying of oil pipeline pipes.

Protection of pipes with oil-bitumen coating.

Cathodic protection of pipelines.

A cartoon explaining such protection.

Oil production at sea.

Offshore oil rigs and underwater structures can be protected by the method of tread protection.

A cartoon explaining such protection.

Electroplating coatings obtained by electrolysis of aqueous solutions.

Anode and cathode coatings.

Tin coating in the production of cans for packaging products.

Non-metallic coatings are coatings with lacquers, paints and enamels, polymer materials.

Samples of products in which fluoroplast is used to protect against corrosion.

The process of applying fluoroplast.

Steel tape treated with diffusion metallization in vacuum.

A cartoon explaining such a process.

Applying enamel to the car frame.