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Corrosion

A corrosão (derivada da palavra latina "corrodere", que significa "decompor") descreve a interação de um material, geralmente feito de metal, com substâncias de seu ambiente. Isso leva à formação de um elemento corrosivo e, simultaneamente, a alterações detectáveis no material, que geralmente afetam negativamente suas propriedades.

About pump systems, corrosion can occur in various manifestations, both under the influence of chemical processes and in combination with mechanical stress. Typical examples of types of corrosion are:

• Surface corrosion
• Pitting corrosion
• Erosion
• Cavitation

To prevent corrosion in pumping systems, it is essential to carefully consider the material properties of the components in contact with the fluid being pumped. Effective protection against pitting corrosion, which can be caused by chlorides, for example, can be achieved by using molybdenum alloys or the use of plastic pumps.