Extra Vapor Protection Added to Corrosion-Inhibiting Coating

The coating can be used for a variety of applications where corrosion protection is needed. Photo courtesy of Cortec.

The VpCI-368 coating from corrosion control technologies group Cortec (St. Paul, Minnesota) is now more powerful with extra vapor-phase corrosion inhibitors.

The coating protects metal substrates exposed to harsh outdoor conditions, with an extensive record of use for the mothballing and layup of equipment, protection of shipments, and preservation of spares.

The coating is also available for application in complex, sealed spaces—where a greater concentration of vapor inhibitor is beneficial.

An extra dose of the vapor-phase corrosion inhibitor (VpCI) vaporizes from the coating, fills the enclosed space, and adsorbs on hard-to-reach surfaces. This is helpful on applications such as pipe internals, where it can be challenging to thoroughly cover all substrates, the company explains.

The coating is ultraviolet (UV) resistant and passes up to 1,500 h of ASTM B1171 salt spray testing, applied at 2-3 mils (50.8-76.2 μm) on carbon steel (CS). It also provides multi-metal protection on stainless steel (SS), copper (Cu), aluminum (Al), and cast iron. The cured film is stable up to 392 °F (200 °C), and it can be applied by spray or brush.

Source: Cortec, cortecvci.com.



1 ASTM B117-11, “Standard Practice for Operating Salt Spray (Fog) Apparatus” (West Conshohocken, PA: ASTM, 2011).