HVOF coating of Inconel 625 onto stainless and carbon steel surfaces: Corrosion and bond testing

A. A. Boudi; M. S.J. Hashmi; B. S. Yilbas

doi:10.1016/j.jmatprotec.2004.04.146

HVOF coating of Inconel 625 onto stainless and carbon steel surfaces: Corrosion and bond testing

A. A. Boudi
, M. S.J. Hashmi
, B. S. Yilbas^*

^*Corresponding author for this work

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

38 Scopus citations

Abstract

High velocity oxyfuel (HVOF) coating is extensively used in power industry to improve the corrosion and wear resistance of metallic surfaces. In the present study, HVOF coating of Inconel 625 onto stainless steel and mild steel surfaces is considered. The static electrochemical tests are carried out for different durations. Tensile bonding strength of the coatings before and after the electrochemical tests is measured. Optical microscopy and SEM are carried out to investigate the microstructure of the coating before and after the chemical tests. It is found that the coat has a noticeably layered structure with the layers parallel to the substrate's surface and segregated by a slightly darker contrast phase presumed to be oxide. The tensile bonding strength of the coating reduces considerably after 3 weeks testing in the aqueous corrosion medium.

Original language	English
Pages (from-to)	2051-2055
Number of pages	5
Journal	Journal of Materials Processing Technology
Volume	155-156
Issue number	1-3
DOIs	https://doi.org/10.1016/j.jmatprotec.2004.04.146
State	Published - 30 Nov 2004

Keywords

Bonding strength
Coating
Corrosion
HVOF
Thermal spray

ASJC Scopus subject areas

Ceramics and Composites
Computer Science Applications
Metals and Alloys
Industrial and Manufacturing Engineering

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10.1016/j.jmatprotec.2004.04.146

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title = "HVOF coating of Inconel 625 onto stainless and carbon steel surfaces: Corrosion and bond testing",

abstract = "High velocity oxyfuel (HVOF) coating is extensively used in power industry to improve the corrosion and wear resistance of metallic surfaces. In the present study, HVOF coating of Inconel 625 onto stainless steel and mild steel surfaces is considered. The static electrochemical tests are carried out for different durations. Tensile bonding strength of the coatings before and after the electrochemical tests is measured. Optical microscopy and SEM are carried out to investigate the microstructure of the coating before and after the chemical tests. It is found that the coat has a noticeably layered structure with the layers parallel to the substrate's surface and segregated by a slightly darker contrast phase presumed to be oxide. The tensile bonding strength of the coating reduces considerably after 3 weeks testing in the aqueous corrosion medium.",

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T1 - HVOF coating of Inconel 625 onto stainless and carbon steel surfaces

T2 - Corrosion and bond testing

AU - Boudi, A. A.

AU - Hashmi, M. S.J.

AU - Yilbas, B. S.

PY - 2004/11/30

Y1 - 2004/11/30

N2 - High velocity oxyfuel (HVOF) coating is extensively used in power industry to improve the corrosion and wear resistance of metallic surfaces. In the present study, HVOF coating of Inconel 625 onto stainless steel and mild steel surfaces is considered. The static electrochemical tests are carried out for different durations. Tensile bonding strength of the coatings before and after the electrochemical tests is measured. Optical microscopy and SEM are carried out to investigate the microstructure of the coating before and after the chemical tests. It is found that the coat has a noticeably layered structure with the layers parallel to the substrate's surface and segregated by a slightly darker contrast phase presumed to be oxide. The tensile bonding strength of the coating reduces considerably after 3 weeks testing in the aqueous corrosion medium.

AB - High velocity oxyfuel (HVOF) coating is extensively used in power industry to improve the corrosion and wear resistance of metallic surfaces. In the present study, HVOF coating of Inconel 625 onto stainless steel and mild steel surfaces is considered. The static electrochemical tests are carried out for different durations. Tensile bonding strength of the coatings before and after the electrochemical tests is measured. Optical microscopy and SEM are carried out to investigate the microstructure of the coating before and after the chemical tests. It is found that the coat has a noticeably layered structure with the layers parallel to the substrate's surface and segregated by a slightly darker contrast phase presumed to be oxide. The tensile bonding strength of the coating reduces considerably after 3 weeks testing in the aqueous corrosion medium.

KW - Bonding strength

KW - Coating

KW - Corrosion

KW - HVOF

KW - Thermal spray

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M3 - Article

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SN - 0924-0136

VL - 155-156

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JF - Journal of Materials Processing Technology

IS - 1-3

ER -

HVOF coating of Inconel 625 onto stainless and carbon steel surfaces: Corrosion and bond testing

Abstract

Keywords

ASJC Scopus subject areas

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