Hollow wire corrosion of stainless steel ropes in a marine mooring system and its relation to microstructure

Paul Linhardt; Maria V. Biezma; Roland Haubner; Roman Schuster; Tomasz Wojcik

doi:10.1002/maco.202213699

Hollow wire corrosion of stainless steel ropes in a marine mooring system and its relation to microstructure

Paul Linhardt (Korresp. Autor*in)
, Maria V. Biezma
, Roland Haubner
, Roman Schuster
, Tomasz Wojcik

Veröffentlichungen: Beitrag in Fachzeitschrift › Artikel › Peer Reviewed

Abstract

Indications of corrosion were observed on ropes made of stainless steel type 316 in mooring systems of floating platforms in shallow tropical ocean water and doubts about the material quality came up. Routine investigations could confirm the type of alloy and the absence of sensitization, but the corrosion pattern was found unusual: individual wires of the ropes were found as hollow tubes many centimeters in length, which we refer to as hollow wire corrosion (HWC). Comparative investigations with a rope of the same specification from an arbitrarily chosen alternative producer revealed very similar susceptibility to chloride-induced pitting but a significant difference in repassivation behavior of the two products. An electrochemical test was designed which could reproduce HWC under realistic conditions with one product while the other repassivated readily. By electron backscattered diffraction, the different susceptibility to HWC could be related to the very different textures of the wire materials of the two products, resulting from different manufacturing technologies.

Originalsprache	Englisch
Seiten (von - bis)	818-830
Seitenumfang	13
Fachzeitschrift	Materials and Corrosion
Jahrgang	74
Ausgabenummer	6
DOIs	https://doi.org/10.1002/maco.202213699
Publikationsstatus	Veröffentlicht - Juni 2023
Extern publiziert	Ja

Fördermittel

This research did not receive funding. For their interest and kind support, the authors are grateful to Johannes Zbiral (TU Wien) for contributing XRF analyses, Günther Ball and Matea Ban (TU Wien) for carrying out electrochemical tests, Susanne Strobel and Edith Asiemo (TU Wien) for metallographic preparation, Werner Artner (TU Wien X‐Ray Center) and Grupo de Altas Presiones y Espectroscopía (Universidad de Cantabria) for doing XRD, the Vienna micro‐CT Lab (University of Vienna) for taking the X‐ray photos. One of us (R. Schuster) gratefully acknowledges financial support from the Austrian Federal Ministry for Digital and Economic Affairs and the National Foundation for Research, Technology, and Development. The authors acknowledge TU Wien Bibliothek for financial support through its Open Access Funding Program. This research did not receive funding. For their interest and kind support, the authors are grateful to Johannes Zbiral (TU Wien) for contributing XRF analyses, Günther Ball and Matea Ban (TU Wien) for carrying out electrochemical tests, Susanne Strobel and Edith Asiemo (TU Wien) for metallographic preparation, Werner Artner (TU Wien X-Ray Center) and Grupo de Altas Presiones y Espectroscopía (Universidad de Cantabria) for doing XRD, the Vienna micro-CT Lab (University of Vienna) for taking the X-ray photos. One of us (R. Schuster) gratefully acknowledges financial support from the Austrian Federal Ministry for Digital and Economic Affairs and the National Foundation for Research, Technology, and Development. The authors acknowledge TU Wien Bibliothek for financial support through its Open Access Funding Program.

UN SDGs

Dieser Output leistet einen Beitrag zu folgendem(n) Ziel(en) für nachhaltige Entwicklung

SDG 14 – Leben unter Wasser

ÖFOS 2012

205019 Materialwissenschaften
205017 Werkstofftechnik

Zugriff auf Dokument

10.1002/maco.202213699Lizenz: CC BY-NC-ND 4.0

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Verknüpfung zur Publikation in Scopus

Zitationsweisen

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abstract = "Indications of corrosion were observed on ropes made of stainless steel type 316 in mooring systems of floating platforms in shallow tropical ocean water and doubts about the material quality came up. Routine investigations could confirm the type of alloy and the absence of sensitization, but the corrosion pattern was found unusual: individual wires of the ropes were found as hollow tubes many centimeters in length, which we refer to as hollow wire corrosion (HWC). Comparative investigations with a rope of the same specification from an arbitrarily chosen alternative producer revealed very similar susceptibility to chloride-induced pitting but a significant difference in repassivation behavior of the two products. An electrochemical test was designed which could reproduce HWC under realistic conditions with one product while the other repassivated readily. By electron backscattered diffraction, the different susceptibility to HWC could be related to the very different textures of the wire materials of the two products, resulting from different manufacturing technologies.",

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AU - Linhardt, Paul

AU - Biezma, Maria V.

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AU - Wojcik, Tomasz

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AB - Indications of corrosion were observed on ropes made of stainless steel type 316 in mooring systems of floating platforms in shallow tropical ocean water and doubts about the material quality came up. Routine investigations could confirm the type of alloy and the absence of sensitization, but the corrosion pattern was found unusual: individual wires of the ropes were found as hollow tubes many centimeters in length, which we refer to as hollow wire corrosion (HWC). Comparative investigations with a rope of the same specification from an arbitrarily chosen alternative producer revealed very similar susceptibility to chloride-induced pitting but a significant difference in repassivation behavior of the two products. An electrochemical test was designed which could reproduce HWC under realistic conditions with one product while the other repassivated readily. By electron backscattered diffraction, the different susceptibility to HWC could be related to the very different textures of the wire materials of the two products, resulting from different manufacturing technologies.

KW - hollow wire corrosion

KW - ropes

KW - seawater

KW - stainless steels

KW - tunneling corrosion

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