Electrochemical study of laser nitrided and PVD TiN coated Ti-6Al-4V alloy: The observation of selective dissolution

M. Khaled; B. S. Yilbas; J. Shirokoff

doi:10.1016/S0257-8972(01)01326-3

Electrochemical study of laser nitrided and PVD TiN coated Ti-6Al-4V alloy: The observation of selective dissolution

M. Khaled
, B. S. Yilbas^*
, J. Shirokoff

^*Corresponding author for this work

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

52 Scopus citations

Abstract

Several techniques are considered to improve the tribological and corrosion properties of the Ti-6AI-4V alloy. One of the promising techniques is the duplex treatment. In the present study, electrochemical testing of a duplex treated Ti-6AI-4V alloy is considered. The duplex treatment is carried out in two steps. In the first step, the alloy surface is laser nitrided while in the second step, the nitrided alloy surface is PVD TiN coated. Corrosion rates and electrochemical properties of the treated surfaces are investigated using polarization techniques. A comparison of the electrochemical response of the duplex treated, PVD TiN coated, and untreated workpieces is made. X-Ray diffraction spectroscopy (XRD), energy dispersive spectrometry (EDS) and scanning electron microscopy (SEM) are carried out to examine the coating layer, pit morphology and elemental structures due to duplex treatment and controlled electro-oxidation. It is found that the duplex treated workpiece surface is more resistant to corrosion as compared to TiN coated and untreated surfaces. Among the three metals contained in the alloy, aluminum is found to selectively dissolve in large proportion in solution during oxidation.

Original language	English
Pages (from-to)	46-54
Number of pages	9
Journal	Surface and Coatings Technology
Volume	148
Issue number	1
DOIs	https://doi.org/10.1016/S0257-8972(01)01326-3
State	Published - 1 Nov 2001

Bibliographical note

Funding Information:
The authors acknowledge the support of the Chemistry Department and especially, the Analytical Division, the Center for Engineering Research of the Research Institute, and the Mechanical Engineering Department at King Fahd University of Petroleum and Minerals.

Keywords

Aluminum
Coating
Corrosion
Nitride
Titanium

ASJC Scopus subject areas

General Chemistry
Condensed Matter Physics
Surfaces and Interfaces
Surfaces, Coatings and Films
Materials Chemistry

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10.1016/S0257-8972(01)01326-3

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title = "Electrochemical study of laser nitrided and PVD TiN coated Ti-6Al-4V alloy: The observation of selective dissolution",

abstract = "Several techniques are considered to improve the tribological and corrosion properties of the Ti-6AI-4V alloy. One of the promising techniques is the duplex treatment. In the present study, electrochemical testing of a duplex treated Ti-6AI-4V alloy is considered. The duplex treatment is carried out in two steps. In the first step, the alloy surface is laser nitrided while in the second step, the nitrided alloy surface is PVD TiN coated. Corrosion rates and electrochemical properties of the treated surfaces are investigated using polarization techniques. A comparison of the electrochemical response of the duplex treated, PVD TiN coated, and untreated workpieces is made. X-Ray diffraction spectroscopy (XRD), energy dispersive spectrometry (EDS) and scanning electron microscopy (SEM) are carried out to examine the coating layer, pit morphology and elemental structures due to duplex treatment and controlled electro-oxidation. It is found that the duplex treated workpiece surface is more resistant to corrosion as compared to TiN coated and untreated surfaces. Among the three metals contained in the alloy, aluminum is found to selectively dissolve in large proportion in solution during oxidation.",

keywords = "Aluminum, Coating, Corrosion, Nitride, Titanium",

author = "M. Khaled and Yilbas, \{B. S.\} and J. Shirokoff",

note = "Funding Information: The authors acknowledge the support of the Chemistry Department and especially, the Analytical Division, the Center for Engineering Research of the Research Institute, and the Mechanical Engineering Department at King Fahd University of Petroleum and Minerals.",

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T2 - The observation of selective dissolution

AU - Khaled, M.

AU - Yilbas, B. S.

AU - Shirokoff, J.

N1 - Funding Information: The authors acknowledge the support of the Chemistry Department and especially, the Analytical Division, the Center for Engineering Research of the Research Institute, and the Mechanical Engineering Department at King Fahd University of Petroleum and Minerals.

PY - 2001/11/1

Y1 - 2001/11/1

N2 - Several techniques are considered to improve the tribological and corrosion properties of the Ti-6AI-4V alloy. One of the promising techniques is the duplex treatment. In the present study, electrochemical testing of a duplex treated Ti-6AI-4V alloy is considered. The duplex treatment is carried out in two steps. In the first step, the alloy surface is laser nitrided while in the second step, the nitrided alloy surface is PVD TiN coated. Corrosion rates and electrochemical properties of the treated surfaces are investigated using polarization techniques. A comparison of the electrochemical response of the duplex treated, PVD TiN coated, and untreated workpieces is made. X-Ray diffraction spectroscopy (XRD), energy dispersive spectrometry (EDS) and scanning electron microscopy (SEM) are carried out to examine the coating layer, pit morphology and elemental structures due to duplex treatment and controlled electro-oxidation. It is found that the duplex treated workpiece surface is more resistant to corrosion as compared to TiN coated and untreated surfaces. Among the three metals contained in the alloy, aluminum is found to selectively dissolve in large proportion in solution during oxidation.

AB - Several techniques are considered to improve the tribological and corrosion properties of the Ti-6AI-4V alloy. One of the promising techniques is the duplex treatment. In the present study, electrochemical testing of a duplex treated Ti-6AI-4V alloy is considered. The duplex treatment is carried out in two steps. In the first step, the alloy surface is laser nitrided while in the second step, the nitrided alloy surface is PVD TiN coated. Corrosion rates and electrochemical properties of the treated surfaces are investigated using polarization techniques. A comparison of the electrochemical response of the duplex treated, PVD TiN coated, and untreated workpieces is made. X-Ray diffraction spectroscopy (XRD), energy dispersive spectrometry (EDS) and scanning electron microscopy (SEM) are carried out to examine the coating layer, pit morphology and elemental structures due to duplex treatment and controlled electro-oxidation. It is found that the duplex treated workpiece surface is more resistant to corrosion as compared to TiN coated and untreated surfaces. Among the three metals contained in the alloy, aluminum is found to selectively dissolve in large proportion in solution during oxidation.

KW - Aluminum

KW - Coating

KW - Corrosion

KW - Nitride

KW - Titanium

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M3 - Article

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VL - 148

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JO - Surface and Coatings Technology

JF - Surface and Coatings Technology

IS - 1

ER -

Electrochemical study of laser nitrided and PVD TiN coated Ti-6Al-4V alloy: The observation of selective dissolution

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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