Effect of electroless Ni-B and Ni-W-B coatings on the corrosion-fatigue behaviour of 7075 Al alloy

Rasid Ahmed Yildiz*, Kenan Genel, Turgut Gulmez

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)

Abstract

This research experimentally determines the effect of electroless Ni-B and Ni-W-B coatings on the fatigue and corrosion-fatigue life of 7075 Al alloy substrate. SEM, XRD, fracture toughness and potentiodynamic polarization tests exhibited the characteristics of the coatings. The fatigue test results revealed that easy crack initiation from the brittle coating is the main responsible for a reduction in fatigue performance of coated specimen. The Ni-B coating offered superior resistance in terms of both corrosion and corrosion fatigue compared to Ni-W-B coating. Considerable improvement was achieved in corrosion fatigue performance of Ni-B coated specimens.

Original languageEnglish
Article number106040
JournalInternational Journal of Fatigue
Volume144
DOIs
Publication statusPublished - Mar 2021

Bibliographical note

Publisher Copyright:
© 2020 Elsevier Ltd

Funding

This study was supported by Istanbul Technical University, Project Number 34461.

FundersFunder number
Istanbul Teknik Üniversitesi34461

    Keywords

    • 7075 Al alloy
    • Corrosion fatigue
    • Electroless Nickel coating
    • Ni-B
    • Ni-W-B

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