From Corrosion Properties of Materials

Electrochemistry of Corrosion

Corrosion is most visible when the corrosive substance is moisture or water. When the metal surface is exposed to water or moisture, it reacts with the water in a process called oxidation, which means the reaction of a substance with Oxygen. This reaction produces electrons in the metal while a reduction reaction consumes electrons. Together, they form a Corrosion Cell.


A reduction reaction consumes the electrons produced by an anodic reaction.

During an oxidation reaction, the metal dissolves to form a soluble metal compound or an insoluble oxide depending on environmental conditions. In the oxidation reaction, the flow of electrons is necessary for the completion of the corrosion reaction.

An example of a typical anodic oxidation reaction that occurs on a metal surface in a "Corrosion Cell" is:

Fe ==> Fe 2+ + 2e

An example of a cathodic reduction is:

O 2 + 2H 2O + 4e - ==> 4OH

Products & Services
Surface and Corrosion Protection Products
Surface protection products and corrosion protection products are used to provide protection to industrial surfaces particularly in the marine, transportation, chemical process, pulp and paper, and petroleum industries.
Rust and Corrosion Inhibiting Fluids
Rust preventives and corrosion inhibitors are lubricants, greases, oils or fluid additives that form a protective film or barrier to prevent corrosion or rust formation.
Inhibitors and Stabilizers
Inhibitors suppress, decrease, or prevent a reaction from occurring while stabilizers are used to maintain specific functions or properties of a product or additive.
Electrolytic Cleaning Equipment
Electrolytic cleaning equipment uses electrolytes and applied current to electrochemically clean welds and other metal surfaces. Electrolytic cleaners are also known as electrocleaners, weld cleaners and electrochemical cleaning systems.

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