.
7. Work in pairs. Translate the following text from English into Russian.
The major harmful effects of corrosion can be summarized as follows:
1. Reduction of metal thickness leading to loss of mechanical strength and structural failure or breakdown.
2. Hazards or injuries to people arising from structural failure or breakdown (e.g. bridges, cars, aircraft).
3. Loss of time in availability of profile-making industrial equipment.
4. Reduced value of goods due to deterioration of appearance.
5. Contamination of fluids in vessels and pipes.
6. Perforation of vessels and pipes allowing escape of their contents and possible harm to the surroundings. For example a leaky domestic radiator can cause expensive damage to carpets and decorations, while corrosive sea water may enter the boilers of a power station if the condenser tubes perforate.
7. Loss of technically important surface properties of a metallic component. These could include frictional and bearing properties, ease of fluid flow over a pipe surface, electrical conductivity of contacts, surface reflectivity or heat transfer across a surface.
8. Mechanical damage to valves, pumps, etc, or blockage of pipes by solid corrosion products.
8. Work in pairs. Interpret the following passage sentence by sentence.
Corrosion is a natural and costly process of destruction like earthquakes, tornados, floods and volcanic eruptions, with one major difference. Сorrosion can be prevented or at least controlled. Several definitions of corrosion are reproduced below:
(A) Corrosion is the surface wastage that occurs when metals are exposed to reactive environments.
(B) Corrosion is the result of interaction between a metal and environments which results in its gradual destruction.
(C) Corrosion is an aspect of the decay of materials by chemical or biological agents.
(D) Corrosion is an extractive metallurgy in reverse.
(E) Corrosion is the deterioration of materials as a result of reaction with its environment (Fontana).
(F) Corrosion is the destructive attack of a metal by chemical or electrochemical reaction with the environment (Uhlig).
Despite different definitions, it can be observed that corrosion is basically the result of interaction between materials and their environment.
9. Give English equivalents to the following word combinations and learn them by heart: