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Picture for Overview of latest advances in measuring and understanding cathodic protection current permeability by organic coatings
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Overview of latest advances in measuring and understanding cathodic protection current permeability by organic coatings

Product Number: 51320-14685-SG
Author: Facundo Varela, Mauricio Latino, Yongjun Tan, Maria Forsyth
Publication Date: 2020
$20.00

Shielding of cathodic protection (CP) by disbonded coatings is considered a “worst case scenario” for external corrosion in the pipeline industry. It has been hypothesized that if coatings were partially permeable to CP, the imbalance between cathodic and anodic reactions would induce a high pH environment under disbonded coatings and that would impede corrosion. However, direct experimental evidence of this process has been limited. Moreover, this line of reasoning is often inversed incorrectly assuming that the only reason for the presence of a high pH environment under disbonded coatings is their partial permeability to CP current. 

The recent development of an electrochemical self-validating technique to measure the relatively small ionic currents that could permeate through defect free coatings has shed a new light on the topic. It has been found that most of the commercial pipeline coatings tested in unaged conditions present a CP shielding behavior. Accelerated hydrothermal ageing of fusion-bonded epoxy (FBE) coatings was performed to study the effect of water absorption. Ageing resulted in major plasticization, which increased the conduction of CP current through FBE coatings. However, FBE seems to be partially permeable to H+ and/or OH-, which reduces its ability to form and retain a high pH environment under disbonded coatings. In conjunction, these results thus indicate the extremely limited capability of commercial pipeline coatings to prevent corrosion in case of disbondment. 

Picture for 98338 20 YEARSOF ADVANCES IN TECHNOLOGY
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98338 20 YEARS OF ADVANCES IN TECHNOLOGY FOR CHEMICALLY CLEANING INDUSTRIAL EQUIPMENT: A CRITICAL REVIEW

Product Number: 51300-98338-SG
ISBN: 98338 1998 CP
Author: WAYNE W. FRENIER
$20.00
Picture for 03610 ADVANCES AND EVOLUTION IN PVDF
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03610 ADVANCES AND EVOLUTION IN PVDF RESIN TECHNOLOGY

Product Number: 51300-03610-SG
ISBN: 03610 2003 CP
Author: Gary M. Dennis, Greg O’Brien, Michael Werth
$20.00
Picture for 09069 Advances in Cathodic Protection Modelling of Coated Deep Well Casings in Multi-Layered Media
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09069 Advances in Cathodic Protection Modelling of Coated Deep Well Casings in Multi-Layered Media

Product Number: 51300-09069-SG
ISBN: 09069 2009 CP
Author: Robert A. Adey, Andres B. Peratta, John M. W. Baynham and Jean Vittonato
Publication Date: 2009
$20.00
Picture for Significant Advances for Alloy UNS N07022 for Sour Oilfield Service
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51315-5482-Significant Advances for Alloy UNS N07022 for Sour Oilfield Service

Product Number: 51315-5482-SG
ISBN: 5482 2015 CP
Author: Edward Hibner
Publication Date: 2015
$20.00
Picture for 00314 ADVANCES IN REVERSE OSMOSIS APPLICATION
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00314 ADVANCES IN REVERSE OSMOSIS APPLICATION IN WATER REUSE

Product Number: 51300-00314-SG
ISBN: 00314 2000 CP
Author: John F. Zibrida, Zahid Amjad Ph.D., Robert W. Zuhl, Jim Lewis
$20.00
Picture for 04444 Advances in Assessing the Susceptibility to
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04444 Advances in Assessing the Susceptibility to Intergranular Corrosion of Austenitic Stainless Steels Using the Electrochemical Reactivation Test (ERT)

Product Number: 51300-04444-SG
ISBN: 04444 2004 CP
Author: Oliver Greven and Hans-Eugene Buehler, Institute of Ferrous Metallurgy
$20.00
Picture for 00754 ADVANCES IN FIELD JOINT COATING FOR
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00754 ADVANCES IN FIELD JOINT COATING FOR UNDERGROUND PIPELINES

Product Number: 51300-00754-SG
ISBN: 00754 2000 CP
Author: All N Moosavi, Ph.D.
$20.00