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ASM Handbook

Protective Organic Coatings

Edited by
Kenneth B. Tator
Kenneth B. Tator
KTA-Tator, Inc.
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ASM International
Volume
5B
ISBN electronic:
978-1-62708-172-6
Publication date:
2015
Book Chapter

Soluble Salts beneath Coatings

By
Kenneth B. Tator
Kenneth B. Tator
KTA-Tator, Inc.
Search for other works by this author on:
Published:
2015
Page range:
236 - 250
Publication history
December 26, 2014

Abstract

Soluble salts on a surface can affect a steel substrate or coating in two principal ways: corrosion acceleration and osmotic blistering. This article provides a detailed discussion on the mechanisms for each of these deleterious effects. It describes the most detrimental anions with regard to corrosion, namely, chlorides, sulfates, and nitrates, and provides information on recognition and testing of the presence of soluble salts. The salt-measurement techniques and commercially available equipment are also described. The article provides information on research regarding tolerable levels of salts beneath coatings. The information shows that there appears to be a threshold limit to the salt contamination that a given coating/coating system can tolerate in a given environment.

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Kenneth B. Tator, 2015. "Soluble Salts beneath Coatings", Protective Organic Coatings, Kenneth B. Tator

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