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

doi:10.1016/j.ijfatigue.2020.106040

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

Department of Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

27 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 language	English
Article number	106040
Journal	International Journal of Fatigue
Volume	144
DOIs	https://doi.org/10.1016/j.ijfatigue.2020.106040
Publication status	Published - Mar 2021

Bibliographical note

Publisher Copyright:
© 2020 Elsevier Ltd

Keywords

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

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10.1016/j.ijfatigue.2020.106040

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

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.",

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AU - Yildiz, Rasid Ahmed

AU - Genel, Kenan

AU - Gulmez, Turgut

PY - 2021/3

Y1 - 2021/3

N2 - 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.

AB - 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.

KW - 7075 Al alloy

KW - Corrosion fatigue

KW - Electroless Nickel coating

KW - Ni-B

KW - Ni-W-B

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ER -

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

Abstract

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Keywords

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