Menu
Search
Filters
Close
Menu

07244 Mitigation of Galvanic Corrosion in Seawater Piping Systems

Picture for 07244 Mitigation of Galvanic Corrosion in Seawater Piping Systems
Available for download

Results of laboratory testing of a new technology for mitigating galvanic corrosion. Incorporated into a device, referred to as the galvanic corrosion inhibiting coupling (GCIC) or bi-electrode device (BED), it creates an ohmic potential drop within the pipe and minimizes the polarization of the dissimilar metals.

Product Number: 51300-07244-SG
ISBN: 07244 2007 CP
Author: Brett M. Tossey and John A. Beavers
Publication Date: 2007
Industry: Cathodic Protection
$0.00
$20.00
$20.00

Dissimilar metal couples are frequently found in seawater piping systems, as a result of the desire on the part of designers to use the beneficial properties of different alloys for different components in the systems. For example, copper base alloys have natural antifouling properties, which make them desirable for use in piping systems. Titanium alloys, and nickel base alloys containing molybdenum are highly resistant to localized corrosion and are frequently used in thin wall heat exchangers. The presence of these dissimilar metal couples can lead to serious problems with galvanic corrosion of the more active members of the couples. This paper summarizes the results laboratory testing of a new technology for mitigating galvanic corrosion. The technology has been incorporated into a device, referred to as the galvanic corrosion inhibiting coupling (GCIC) or bi-electrode device (BED), which creates an ohmic potential drop within the pipe and minimizes the polarization of the dissimilar metals from their respective corrosion potentials.

Keywords: seawater piping corrosion, galvanic corrosion mitigation, titanium, Alloy 625, copper-30 nickel

 

Dissimilar metal couples are frequently found in seawater piping systems, as a result of the desire on the part of designers to use the beneficial properties of different alloys for different components in the systems. For example, copper base alloys have natural antifouling properties, which make them desirable for use in piping systems. Titanium alloys, and nickel base alloys containing molybdenum are highly resistant to localized corrosion and are frequently used in thin wall heat exchangers. The presence of these dissimilar metal couples can lead to serious problems with galvanic corrosion of the more active members of the couples. This paper summarizes the results laboratory testing of a new technology for mitigating galvanic corrosion. The technology has been incorporated into a device, referred to as the galvanic corrosion inhibiting coupling (GCIC) or bi-electrode device (BED), which creates an ohmic potential drop within the pipe and minimizes the polarization of the dissimilar metals from their respective corrosion potentials.

Keywords: seawater piping corrosion, galvanic corrosion mitigation, titanium, Alloy 625, copper-30 nickel

 

Product tags
Also Purchased
Picture for 06163 CATHODIC PROTECTION OF PIPELINES
Available for download

06163 CATHODIC PROTECTION OF PIPELINES IN HIGH RESISTIVITY SOILS AND THE EFFECT OF SEASONAL CHANGES

Product Number: 51300-06163-SG
ISBN: 06163 2006 CP
Author: Fraser King, Greg Van Boven, P, Nichols, Rod Reid, Kurt Lawson and Neil Thompson
Publication Date: 2006
$20.00

The effect of seasonal changes on the protection of pipelines in high-resistivity soil. The nature and magnitude of the seasonal fluctuations. Corrosion rates are low even when compliance with a given CP criterion cannot be demonstrated.
Picture for 99319 CONTROL MEASURES TO MITIGATE GALVANIC
Available for download

99319 CONTROL MEASURES TO MITIGATE GALVANIC CORROSION

Product Number: 51300-99319-SG
ISBN: 99319 1999 CP
Author: David A. Shifler, PhD, PE, Dennis Melton
$20.00
Picture for 08070 Pipe-to-Soil Potential Measurements, The Basic Science
Available for download

08070 Pipe-to-Soil Potential Measurements, The Basic Science

Product Number: 51300-08070-SG
ISBN: 08070 2008 CP
Author: L. A. Bash
Publication Date: 2008
$20.00

Based on some articles that have been published in Materials Performance (MP) and the NACE Courses 9 and Standards for Cathodic Protection (CP) practitioners, this author has concluded that present day CP practitioners, do not have an adequate understanding of some basic scientific principles.
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