Microbiologically Influenced Corrosion
Microbiologically influenced corrosion: bacteria and fungi produce metabolites that attack steel and speed up rusting.
Physical-Chemical Mechanism of Action
Microbiological corrosion is caused by bacteria and fungi that grow on the surface of metals. These organisms produce aggressive acids and enzymes that attack the metal and accelerate the rusting process.
Metallurgical Relevance & Welding Risks
The presence of bacteria and fungi can greatly increase corrosion. This leads to accelerated rusting, reduced component life, and potential failure under chemical loads.
Workshop Practice & Action Guidelines
To avoid microbiologically influenced corrosion, welds should be thoroughly cleaned. Use disinfectant-capable cleaning agents and ensure a clean environment. For heavily stressed or chemical environments, special anti-corrosion protective agents can be applied.