Reaksi korosi akibat chloride.docx
- 1. Pembentukan lapisan pasivasi
3 Fe + 4 H2O -> Fe3O4 + 4 H2
Metals Water (without DO) Magnetite (pasive
film)
Hydrogen
Reaksi dengan kontaminan air laut oleh Chloride
NaCl -> Na+
+ Cl-
Sodium Chloride Ion Sodium Ion Chloride
4Fe3O4 + O2 -> 6Fe2O3
Magnetite Oxygen Hemaitite (rust)
2Fe2O3 + 6Cl-
-> 2FeCl3 + 3O2-
Hematite Ion Chloride Ferric Chloride Oxide
Reaksi Hidrolisis
FeCl3 + H2O -> HCl + Fe(OH)3
Ferric Chloride Water Hidrochloric Acid