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Creating Chemical Adhesion During Surface Preparation

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Historically the focus has been on the adverse anions (chlorides, sulfates nitrates) with little attention
Aggregated FeS and ionically bonded FeCl2 is a pervasive, difficult, and high-liability issue for pipeline,
petrochemical, power, shipping, and other industries. Situational variations (meteorological, geographical,
seasonal, etc.) can confound conventionally specified surface preparation attempts to achieve perfect or
near-perfect metal cleanliness, thus reducing expected coating life by 30 to 75 percent. Because
conventional surface preparation processes have historically been unable to adequately relieve
microcontamination of metal surfaces, organizations have settled for an uneasy balance between economic
and physical feasibilities that exclude the possibility of achieving ideal surface preparation outcomes and
rely more heavily upon barrier coatings to supply needed corrosion control.

Product Number: 51323-19535-SG
Author: Loren L. Hatle
Publication Date: 2023
$20.00
$20.00
$20.00

Consistent coating adhesion is impaired by microcontaminants present in metal surfaces during fabrication
as well as those potentially embedded during surface preparation blast processes occurring in field
maintenance. The purpose of the paper is to demonstrate the importance of chemical adhesion provided in
conjunction with different surface preparation technologies such as WAB (wet abrasive blasting) with
chemical aditive, dry abrasive blasting with a post rinse of chemical additive, or UHP (ultra-high pressure)
water blasting with chemical additive.


A chemical additive application process decontaminates surfaces at the molecular level, eliminating
visually undetectable levels of highly corrosive substances, changes the surface morphology creating a
uniform receptive surface of an amorphous oxide film to improve coating performance exponentially.

Consistent coating adhesion is impaired by microcontaminants present in metal surfaces during fabrication
as well as those potentially embedded during surface preparation blast processes occurring in field
maintenance. The purpose of the paper is to demonstrate the importance of chemical adhesion provided in
conjunction with different surface preparation technologies such as WAB (wet abrasive blasting) with
chemical aditive, dry abrasive blasting with a post rinse of chemical additive, or UHP (ultra-high pressure)
water blasting with chemical additive.


A chemical additive application process decontaminates surfaces at the molecular level, eliminating
visually undetectable levels of highly corrosive substances, changes the surface morphology creating a
uniform receptive surface of an amorphous oxide film to improve coating performance exponentially.

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