Menu
Search
Filters
Close
Menu

Celebrate World Corrosion Awareness Day with 20% off eCourses and eBooks with code WCAD2024 at checkout!

Surface Roughness Profile and its effect on Coating Adhesion and Corrosion Protection

Surface Roughness Profile and its effect on Coating Adhesion and Corrosion Protection
Available for download

Modern design, manufacturing and field-testing specifications include surface profile and adhesion testing on the assumption that they are linked to long term corrosion prevention. There are a number of careful studies, dating back decades, that find no link between measurements of adhesion and (undercutting) corrosion performance, but other studies do, and the concept remains intuitively appealing and widely assumed.

Product Number: 51220-238-SG
Author: S. G. Croll
Publication Date: 2020
Industry: Coatings
$0.00
$20.00
$20.00

Modern design, manufacturing and field-testing specifications include surface profile and adhesion testing on the assumption that they are linked to long term corrosion prevention. There are a number of careful studies, dating back decades, that find no link between measurements of adhesion and (undercutting) corrosion performance, but other studies do, and the concept remains intuitively appealing and widely assumed. Finding connections between adhesion, corrosion and surface profile requires a detailed understanding of fracture mechanics, surface energy, viscoelasticity and even nanoscience. Simple measures of surface roughness are not sufficient to correlate with the adhesive strength of coatings. In addition, common “pull-off” adhesion testing cannot characterize the forces between the coating and metal substrate that might prevent water etc. invading that interface. Modern science can dispel some contradictions but does not yet give unequivocal guidance on the choice of polymer coating for the best corrosion protection in practical situations.

Modern design, manufacturing and field-testing specifications include surface profile and adhesion testing on the assumption that they are linked to long term corrosion prevention. There are a number of careful studies, dating back decades, that find no link between measurements of adhesion and (undercutting) corrosion performance, but other studies do, and the concept remains intuitively appealing and widely assumed. Finding connections between adhesion, corrosion and surface profile requires a detailed understanding of fracture mechanics, surface energy, viscoelasticity and even nanoscience. Simple measures of surface roughness are not sufficient to correlate with the adhesive strength of coatings. In addition, common “pull-off” adhesion testing cannot characterize the forces between the coating and metal substrate that might prevent water etc. invading that interface. Modern science can dispel some contradictions but does not yet give unequivocal guidance on the choice of polymer coating for the best corrosion protection in practical situations.

Product tags
Also Purchased
Surface Soluble Salts Impact on Protective Coating Performance
Available for download

Surface Soluble Salts Impact on Protective Coating Performance

Product Number: 51220-277-SG
Author: Andrew Recker
Publication Date: 2020
$20.00

To address questions and concerns in the protective and marine coatings market, new laboratory data has been generated regarding corrosion rates and mechanisms that will help eliminate some of the assumptions regarding the role of soluble salts. These assumptions include soluble salt types such as chloride, sulfate, and nitrate along with the resulting conjugate corrosion products. 
Why Do We Record the Attributes of a Coating Failure as a Result of an Adhesion Test?
Available for download

Why Do We Record the Attributes of a Coating Failure as a Result of an Adhesion Test?

Product Number: 51220-229-SG
Author: David J Barnes
Publication Date: 2020
$20.00

International standards, both ISO and ASTM, require that the attributes exhibited during an adhesion test are recorded as part of the results. What are these attributes, how should they be recorded and what value are they to the inspector and applicator in assessing the reason for failure?  This paper looks at all these questions and asks should we be going further than we do in defining the mode of failure.
Wet Abrasive Blasting: the Future of Surface Preparation and the Effects it has on Steel
Available for download

Wet Abrasive Blasting: the Future of Surface Preparation and the Effects it has on Steel

Product Number: 51220-232-SG
Author: Joshua Bell, Casey McCartney
Publication Date: 2020
$20.00

With more stringent silica regulations being enforced, wet abrasive blasting is becoming more prevalent in the industry. We investigated the viability of wet abrasive blasting as compared to the more commonly used dry abrasive blast. One added benefit of wet abrasive blasting is the removal of soluble salts in addition to providing the specified profile.
Categories
Industry
Recently viewed
Popular tags
View all

Association for Materials Protection and Performance

© AMPP All Rights Reserved.
Membership Terms of Content Use
Contact Customer Support