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Sacrificial and Barrier Protection

The zinc and aluminium families of metallic coatings protect the steel base from corrosion in two different ways:

  • Zinc predominant coatings protect the substrate primarily by offering sacrificial protection.
  • Aluminium predominant coatings primarily offer barrier protection.
Clause: 
004_004_000_000_000_000_000_000_000
Clause Number: 
4.4
4.4
/cop/durability/sacrificial-and-barrier-protection
Draft Clause: 
004_004_000_000_000_000_000_000_000