Page 227 - Challenges in Corrosion Costs Causes Consequences and Control(2015)

4

CORROSION CONTROL AND
PREVENTION

4.1 INTRODUCTION

Before embarking on the main topic of corrosion control and prevention, it is prudent
to consider the economics of corrosion control methods. In one of the methods, the
total cost of corrosion was estimated by Uhlig (1), which was later adapted to estimate
the cost of corrosion to the Japanese economy (2, 3).
Corrosion control methods consist of protective coatings, corrosion-resistant
metals and alloys, corrosion inhibitors, polymers, anodic and cathode protection,
corrosion control services, corrosion research and development, and education and
training. The total annual cost of corrosion estimated with this method for the
average year of 1998 was $121.41 billion or 1.381% of the $8.79 trillion gross
domestic product. Table 4.1 shows the distribution of corrosion control methods and
services costs.

4.2 PROTECTIVE COATINGS

Both organic and metallic coatings are used to provide protection against corrosion
of metallic substrates. The metallic substrates, particularly carbon steel, will corrode
in the absence of the coating, resulting in a reduction of the service life of the steel
part or component.

Challenges in Corrosion: Costs, Causes, Consequences, and Control, First Edition. V. S. Sastri.
© 2015 John Wiley & Sons, Inc. Published 2015 by John Wiley & Sons, Inc.
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