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Evaluation Of Relative Humidity Dependence For Volatile Corrosion Inhibitor Desorption

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The use of volatile corrosion inhibitor packaging continues to be a mainstay in protecting metal parts in shipping and storage. Initial protective packaging applications of VCIs involved coated paper1-4 which was used to wrap or interleave metal parts for transportation and/or storage. This type of wrapping evolved into film packaging where the inhibitors were extruded into film.

Product Number: 51322-17497-SG
Author: Jonathan Brekan, Kristi Lanzo
Publication Date: 2022
Industries: Corrosion Monitoring and Control , Coatings and Linings , Coatings
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$20.00
$20.00

Major Volatile Corrosion Inhibitor (VCI) packaging manufacturers tout the ability of VCIs to desorb once the protected metal part is unwrapped. This design feature is key to providing the clean metal part to be assembled, put in use, or further machined without the need for the part to be cleaned. Most VCIs rely on high vapor pressures and low binding affinities to desorb from the metal surface effectively. This paper describes a latent protective film that remains on the part after unwrapping. Furthermore, we evaluated how the relative humidity (RH) of the environment affects the VCI's ability to desorb from the metal surface.

Major Volatile Corrosion Inhibitor (VCI) packaging manufacturers tout the ability of VCIs to desorb once the protected metal part is unwrapped. This design feature is key to providing the clean metal part to be assembled, put in use, or further machined without the need for the part to be cleaned. Most VCIs rely on high vapor pressures and low binding affinities to desorb from the metal surface effectively. This paper describes a latent protective film that remains on the part after unwrapping. Furthermore, we evaluated how the relative humidity (RH) of the environment affects the VCI's ability to desorb from the metal surface.

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