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  The mechanism of erosion-corrosion of API X65 steel under turbulent slurry flow: Effect of nominal flow velocity and oxygen content

Aguirre, J., Walczak, M., & Rohwerder, M. (2019). The mechanism of erosion-corrosion of API X65 steel under turbulent slurry flow: Effect of nominal flow velocity and oxygen content. WEAR, 438-439: 203053. doi:10.1016/j.wear.2019.203053.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0006-6BC6-3 Version Permalink: http://hdl.handle.net/21.11116/0000-0006-6BC7-2
Genre: Journal Article

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 Creators:
Aguirre, Javiera1, Author              
Walczak, Magdalena1, Author              
Rohwerder, Michael2, Author              
Affiliations:
1Department of Mechanical and Metallurgical Engineering, Escuela de Ingeniería, Pontificia Universidad Católica de Chile, Santiago, Chile, ou_persistent22              
2Corrosion, Interface Chemistry and Surface Engineering, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society, ou_2074315              

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Free keywords: Alumina; Aluminum oxide; Dissolved oxygen; Erosion; Flow velocity; Localized corrosion, API 5L X65; Carbon steel API-5L X65; EBSD; Electrochemical characterizations; Erosion - corrosions; Mechanism of corrosion; Rotating cylinder electrodes; Work-hardened layer, Steel corrosion
 Abstract: Erosion-corrosion (E-C) of carbon steel API 5L X65 by mineral quartz and alumina slurry is studied to understand the mechanism of corrosion-accelerated material's degradation. A rotating cylinder electrode is employed to simulate the E-C damage and for electrochemical characterization, observed at different flow velocities and contents of dissolved oxygen (DO). Microstructural inspection using SEM and EBSD reveals the extension of the work-hardened layer and other features of the sub-surface. The effect of nominal flow velocity is shown to be associated with an increment in average particles' impact angle and frequency of impacts at the faster flow. The increase in DO availability is shown to promote localized-type corrosion different from pitting, demonstrating the mechanism of erosion-enhanced corrosion. © 2019

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Language(s): eng - English
 Dates: 2019-11-15
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1016/j.wear.2019.203053
 Degree: -

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Title: WEAR
  Other : Wear
Source Genre: Journal
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Publ. Info: Lausanne, Switzerland : Elsevier
Pages: - Volume / Issue: 438-439 Sequence Number: 203053 Start / End Page: - Identifier: ISSN: 0043-1648
CoNE: https://pure.mpg.de/cone/journals/resource/954925451857