NDLI: A New Understanding on AC Corrosion of Pipeline Steel in Alkaline Environment

Content Provider	Springer Nature Link
Author	Zhu, M. Du, C. W.
Copyright Year	2016
Abstract	In this work, the corrosion behavior of X80 pipeline steel at various frequencies AC was investigated in carbonate/bicarbonate solution using the polarization curve, EIS test, Mott-Schottky curve and immersion tests. A new understanding on AC corrosion of the steel in alkaline environment is proposed. Decreasing AC frequency negatively shifts the corrosion potential and increases the corrosion rate of steel, as well as corrosion pits occur more readily. The superimposed AC shifts the critical pitting potential negatively and degrades the passivity of the steel. AC reduces the compactness and uniformity of the passive film formed on the steel and increases the possibility of the breakdown of the film, as well decreases the film thickness. The application of AC could prevent the passive film forming on the surface of X80 steel and result in a destructive effect on the film formed on the steel surface, especially at the low-frequency AC.
Starting Page	221
Ending Page	228
Page Count	8
File Format	PDF
ISSN	10599495
Journal	Journal of Materials Engineering and Performance
Volume Number	26
Issue Number	1
e-ISSN	15441024
Language	English
Publisher	Springer US
Publisher Date	2016-11-04
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	AC corrosion corrosion behavior passive film pipeline steel Characterization and Evaluation of Materials Tribology, Corrosion and Coatings Quality Control, Reliability, Safety and Risk Engineering Design
Content Type	Text
Resource Type	Article
Subject	Mechanics of Materials Materials Science Mechanical Engineering

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