Microbially Influenced Corrosion
Microbial corrosion is caused by bacteria or fungi that break down materials and form biofilms. This creates aggressive local environments and can damage metals.
Physical-chemical mechanism of action
Microbial corrosion is initiated by bacteria or fungi that trigger chemical reactions on the surface of materials. These microorganisms produce acids and other chemical compounds that break down the metal.
Metallurgical relevance & risks in welding
Microbial corrosion can damage weld areas, especially when biofilms form on the surface. This can reduce the strength and life of the metal and lead to cracks or wear.
Workshop practice & instructions
To prevent microbial corrosion, clean workpieces thoroughly before welding. This can be done with chemical cleaners or hot washing. After welding, it is important to treat the weld areas and, if necessary, protect them with antibacterial agents.