Cathodic protection trainer
CPT/EV
Cathodic protection is a technique used to control the corrosion of a metal surface by making it work as a cathode, coupling it with a less noble metal (sacrificial anode) or with a cathodic power supply.
Cathodic protection techniques are commonly used to protect steel pipelines, structures and storage tanks, ships, oil platforms and structural elements of oil wells.
This trainer enables the study of the cathodic protection with sacrificial anode or impressed current (at constant potential and at constant current).
The experiments can be carried out at different temperature and oxygen concentration, using different kinds of reference electrodes and sacrificial anodes as well as various metal samples with or without surface treatment.
The trainer can be connected to a PC (not supplied) running Windows and a dedicated software for the experiments data acquisition and storage.
This unit enables an in-depth analysis of the following topics:
- How to use a digital multimeter
- Measurement of the difference of potential of a sample into
electrolyte - Reference electrode
- Galvanic cell
- First and second species conductors
- Cathodic Protection criteria
- Sacrificial anodes in Zn, Mg and Al
- Cathodic Protection impressed current systems
- Consumable impressed current anode (Fe)
- Inert impressed anode ( Ti/Pt and MMO)
- Resistance concept, circuit for the first and second species
conductors - Introduction to the specific resistance concept over three
different first species conductors (Fe; Cu; Fe – Ni ) - Introduction to the concept of interference due to the presence of external electric fields on buried or submerged structures (Stray Currents)
- Air presence influence on resistivity (insufflate air effect)
- Current density introduction and Tafel Curves construction
- Temperature effect over the Current density (thermostatic
cell) - Air presence influence over the Current density (insufflate air effect)
- Coating and current density
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