Electrochemical Corrosion Kinetics
Electrochemical corrosion: Process in which a metal reacts through electron exchange with its environment and can corrode. The reactions depend on electrical voltages and mass transport.
Physical-Chemical Mechanism of Action
Electrochemical corrosion is a process where metals react through electron exchange with their environment. This causes an electrical current to flow through the metal surface. The reactions are dependent on electrical voltages and the transport of ions in the solution.
Metallurgical Relevance & Risks in Welding
During welding, electrochemical corrosion can occur if the metal is in contact with electrolytes. This can lead to cracks and loss of strength. It is especially dangerous for metals like steel that have high corrosion susceptibility.
Workshop Practice & Instructions
To avoid electrochemical corrosion, metals should be cleaned thoroughly before welding and protected from electrolytes. When choosing a welding process, ensure it does not create additional corrosion conditions. For steel, apply an appropriate paint or insulation.