Characterization and corrosion behaviour of plasma sprayed Zn-Sn alloy coating on mild steel

O.P. Oladijo, M.H. Mathabatha, A.P.I. Popoola, T.P. Ntsoane

Research output: Contribution to journalArticle

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Abstract

Extensive effort to enhance the mechanical and electrochemical surface properties of mild steel has been reported by various engineers worldwide. This investigation presents a comparative test of corrosion behaviour, residual stresses and coating characterization for different Zn-Sn alloy composition on mild steel substrate, with aim of enhancing surface properties and extending the application of mild steel in industries. Coating of about 200μm was successfully deposited by plasma spray on mild steel substrate. The residual stresses were measured by X-ray diffraction sin2ψ technique using Cu-Kα radiation. Characterization and mechanical properties of the surface were investigated using Optical, Scanning electron microscopy, XRD and Emco Dura Scan tester to observe the microstructure, grain size, porosity, phase changes and hardness determination. The corrosion behaviour was examined in NaCl and H2SO4 solution. Direct current (DC) polarization tests were conducted and electrochemical corrosion behaviour of the surfaces was studied using scanning electron microscope (SEM/EDX). The results show an improvement as evidenced by the increased in corrosion resistance in NaCl and H2SO4 solutions, as well as increased in microhardness values on the coating. © 2017 Elsevier B.V.
Original languageEnglish
JournalSurface and Coatings Technology
DOIs
Publication statusPublished - 2016

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Carbon steel
corrosion
steels
Corrosion
Plasmas
coatings
Coatings
surface properties
residual stress
Surface properties
Residual stresses
Scanning
electrochemical corrosion
Electrochemical corrosion
Scanning electron microscopy
scanning electron microscopy
Substrates
test equipment
corrosion resistance
Microhardness

Cite this

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title = "Characterization and corrosion behaviour of plasma sprayed Zn-Sn alloy coating on mild steel",
abstract = "Extensive effort to enhance the mechanical and electrochemical surface properties of mild steel has been reported by various engineers worldwide. This investigation presents a comparative test of corrosion behaviour, residual stresses and coating characterization for different Zn-Sn alloy composition on mild steel substrate, with aim of enhancing surface properties and extending the application of mild steel in industries. Coating of about 200μm was successfully deposited by plasma spray on mild steel substrate. The residual stresses were measured by X-ray diffraction sin2ψ technique using Cu-Kα radiation. Characterization and mechanical properties of the surface were investigated using Optical, Scanning electron microscopy, XRD and Emco Dura Scan tester to observe the microstructure, grain size, porosity, phase changes and hardness determination. The corrosion behaviour was examined in NaCl and H2SO4 solution. Direct current (DC) polarization tests were conducted and electrochemical corrosion behaviour of the surfaces was studied using scanning electron microscope (SEM/EDX). The results show an improvement as evidenced by the increased in corrosion resistance in NaCl and H2SO4 solutions, as well as increased in microhardness values on the coating. {\circledC} 2017 Elsevier B.V.",
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Characterization and corrosion behaviour of plasma sprayed Zn-Sn alloy coating on mild steel. / Oladijo, O.P.; Mathabatha, M.H.; Popoola, A.P.I.; Ntsoane, T.P.

In: Surface and Coatings Technology, 2016.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Characterization and corrosion behaviour of plasma sprayed Zn-Sn alloy coating on mild steel

AU - Oladijo, O.P.

AU - Mathabatha, M.H.

AU - Popoola, A.P.I.

AU - Ntsoane, T.P.

N1 - Export Date: 15 June 2018 Article in Press

PY - 2016

Y1 - 2016

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AB - Extensive effort to enhance the mechanical and electrochemical surface properties of mild steel has been reported by various engineers worldwide. This investigation presents a comparative test of corrosion behaviour, residual stresses and coating characterization for different Zn-Sn alloy composition on mild steel substrate, with aim of enhancing surface properties and extending the application of mild steel in industries. Coating of about 200μm was successfully deposited by plasma spray on mild steel substrate. The residual stresses were measured by X-ray diffraction sin2ψ technique using Cu-Kα radiation. Characterization and mechanical properties of the surface were investigated using Optical, Scanning electron microscopy, XRD and Emco Dura Scan tester to observe the microstructure, grain size, porosity, phase changes and hardness determination. The corrosion behaviour was examined in NaCl and H2SO4 solution. Direct current (DC) polarization tests were conducted and electrochemical corrosion behaviour of the surfaces was studied using scanning electron microscope (SEM/EDX). The results show an improvement as evidenced by the increased in corrosion resistance in NaCl and H2SO4 solutions, as well as increased in microhardness values on the coating. © 2017 Elsevier B.V.

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