Corrosion behaviour of laser gas nitrided Ti-6Al-4V in HCl solution

R. Sh Razavi; M. Salehi; M. Ramazani; Hau Chung Man

doi:10.1016/j.corsci.2009.06.016

Corrosion behaviour of laser gas nitrided Ti-6Al-4V in HCl solution

R. Sh Razavi, M. Salehi, M. Ramazani, Hau Chung Man

Research output: Journal article publication › Journal article › Academic research › peer-review

49 Citations (Scopus)

Abstract

Laser surface nitriding of Ti-6Al-4V alloy was carried out with a Nd:YAG pulsed laser. The microstructure and corrosion behaviour of the nitrided samples were examined, using SEM, XRD, XPS, and anodic polarization tests in 2 M HCl solution. Laser nitriding produced a thin continuous TiN layer followed by TiN dendrites and TiN0.3needles. The laser nitrided specimen exhibited less corrosion current density, passivated more readily and also, maintained a lower current density over the duration of the experiment. This was correlated with the formation of very thin, continuous TiNxOyfilm, which could retard chloride ions ingress into the substrate.

Original language	English
Pages (from-to)	2324-2329
Number of pages	6
Journal	Corrosion Science
Volume	51
Issue number	10
DOIs	https://doi.org/10.1016/j.corsci.2009.06.016
Publication status	Published - 1 Oct 2009

Keywords

A. Titanium
B. Polarization
B. XPS
C. Passive films

ASJC Scopus subject areas

Chemistry(all)
Chemical Engineering(all)
Materials Science(all)

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10.1016/j.corsci.2009.06.016

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title = "Corrosion behaviour of laser gas nitrided Ti-6Al-4V in HCl solution",

abstract = "Laser surface nitriding of Ti-6Al-4V alloy was carried out with a Nd:YAG pulsed laser. The microstructure and corrosion behaviour of the nitrided samples were examined, using SEM, XRD, XPS, and anodic polarization tests in 2 M HCl solution. Laser nitriding produced a thin continuous TiN layer followed by TiN dendrites and TiN0.3needles. The laser nitrided specimen exhibited less corrosion current density, passivated more readily and also, maintained a lower current density over the duration of the experiment. This was correlated with the formation of very thin, continuous TiNxOyfilm, which could retard chloride ions ingress into the substrate.",

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T1 - Corrosion behaviour of laser gas nitrided Ti-6Al-4V in HCl solution

AU - Razavi, R. Sh

AU - Salehi, M.

AU - Ramazani, M.

AU - Man, Hau Chung

PY - 2009/10/1

Y1 - 2009/10/1

N2 - Laser surface nitriding of Ti-6Al-4V alloy was carried out with a Nd:YAG pulsed laser. The microstructure and corrosion behaviour of the nitrided samples were examined, using SEM, XRD, XPS, and anodic polarization tests in 2 M HCl solution. Laser nitriding produced a thin continuous TiN layer followed by TiN dendrites and TiN0.3needles. The laser nitrided specimen exhibited less corrosion current density, passivated more readily and also, maintained a lower current density over the duration of the experiment. This was correlated with the formation of very thin, continuous TiNxOyfilm, which could retard chloride ions ingress into the substrate.

AB - Laser surface nitriding of Ti-6Al-4V alloy was carried out with a Nd:YAG pulsed laser. The microstructure and corrosion behaviour of the nitrided samples were examined, using SEM, XRD, XPS, and anodic polarization tests in 2 M HCl solution. Laser nitriding produced a thin continuous TiN layer followed by TiN dendrites and TiN0.3needles. The laser nitrided specimen exhibited less corrosion current density, passivated more readily and also, maintained a lower current density over the duration of the experiment. This was correlated with the formation of very thin, continuous TiNxOyfilm, which could retard chloride ions ingress into the substrate.

KW - A. Titanium

KW - B. Polarization

KW - B. XPS

KW - C. Passive films

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DO - 10.1016/j.corsci.2009.06.016

M3 - Journal article

SN - 0010-938X

VL - 51

SP - 2324

EP - 2329

JO - Corrosion Science

JF - Corrosion Science

IS - 10

ER -

Corrosion behaviour of laser gas nitrided Ti-6Al-4V in HCl solution

Abstract

Keywords

ASJC Scopus subject areas

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