Paper Titles

Effects of Shock Doping on the Energy Gap of TiO₂
p.149

Shock Synthesis and Characterization of a High-Pressure Phase of TiO₂
p.155

Synthesis and Characterization of Graphite-Encapsulated Metal (Fe,Co,Ni) Nanoparticles by a Detonation Method
p.161

Study of Corrosion Behavior of Conventional and Nanostructured WC-Ni High Velocity Oxy Fuel (HVOF) Sprayed Coatings
p.167

A Comparison between the Corrosion Resistances of High Velocity Oxy Fuel (HVOF) Sprayed Coatings and Hard Chromium Coatings
p.173

Development of Magnesium Based Alloys for High Temperature Applications
p.179

Newly Developed Unsteady Wave Sensing System for Polycarbonate
p.185

Explosively Driven Fragmentation Behavior for Structural Components and Shatterproof Effect of Wall Doubling
p.191

A Numerical Research on the Penetration into a Semi-Infinite Rolled Homogeneous Armor by a Medium-Caliber Kinetic Energy Projectile
p.197

HomeMaterials Science ForumMaterials Science Forum Vol. 673A Comparison between the Corrosion Resistances of...

A Comparison between the Corrosion Resistances of High Velocity Oxy Fuel (HVOF) Sprayed Coatings and Hard Chromium Coatings

Article Preview

Abstract:

HVOF-sprayed coatings (WC–17%Co) and hard chromium coatings corrosion resistances have been compared through electrochemical polarization test in 3.5% NaCl solution. WC–17%Co alloy coatings were deposited on mild steel substrates by High Velocity Oxy-Fuel (HVOF) spray process. The layers of standard and crack free hard chromium coatings were prepared by using Direct Current (DC) and Pulse Current (PC) electroplating process on the mild steel substrates. Hard chromium coatings was characterized as a reference material, to verify whether HVOF-sprayed coatings are suitable as a hard chromium coatings replacement. The microstructure of the coatings was examined by OM, SEM and XRD. Standard hard chromium coatings passivate in NaCl environment, but crack free hard chromium coatings were prepared by using Pulse Current (PC) electroplating do not passivate. The lowest corrosion current densities (Icorr) were recorded for crack free hard chromium coatings. Comparative electrochemical test results showed that, the Standard hard chromium coating has the highest Icorr and were significantly damaged after the electrochemical tests. It is seem to be that WC–17%Co alloy coatings can be substituted for standard hard chromium coatings but crack free chromium coatings bring new challenge for HVOF-sprayed coatings!

You might also be interested in these eBooks

Explosion, Shock Wave and High-Energy Reaction Phenomena

Info:

Periodical:

Materials Science Forum (Volume 673)

Pages:

173-178

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.673.173

Citation:

Cite this paper

Online since:

January 2011

Authors:

Mohammad Reza Saghi Beyragh, Shahin Khameneh Asl, Rahim Vasfpour, Farshid Tazesh, Parisa Khallagi

Keywords:

Corrosion Polarization Test, Crack Free Coating, Hard Chromium, HVOF Coating, Pulse Electroplating Process

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

© 2011 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

[1] L. Fedrizzi, S. Rossi, F. Bellei, F. Deflorian: Wear 253 (2002), p.1173.

DOI: 10.1016/s0043-1648(02)00254-5

[2] J. Simão, D.K. Aspinwall: J. Mater. Proces. Technol. 92/93 (1999), p.281.

[3] L. Fedrizzi, S. Rossi, R. Cristel, P.L. Bonora: Electrochimica Acta 49 (2004), p.2803.

[4] T. Sahraoui, N. Fenineche, G. Montavon, C. Coddet: Materials and Design 31 (2010), p.1431.

[5] Rastegar F, Richardson DE: Surf. Coat. Technol. 90 (1997), p.156.

[6] Stokes J, Looney L: Surf. Coat. Technol. 148 (2001), p.18.

[7] Zhao L, Maurer M, Fischer F, Dicks R, Lugscheider E: Wear 257 (2004), p.41.

[8] Ak NF, Tekmen C, Ozdemir I, Soykan HS, Celik E: Surf. Coat. Technol. 174-175 (2003), p.1070.

[9] R.J.K. Wood: Int. J. Refract. Met. Hard Mater. 28 (2010), p.82.

[10] Stewart DA, Shipway PH, McCartney DG: Acta Mater 48 (2000), p.1593.

[11] J.M. Perry, A. Neville, T. Hodgkiess: J. Therm. Spray Technol. 11 (2002), p.536.

[12] J.M. Perry, A. Neville, V.A. Wilson, T. Hodgkiess: Surf. Coat. Technol. 137 (2001), p.43.

[13] V.A.D. Souza, A. Neville: Mater. Sci. Eng. A 352 (2003), p.202.

[14] C. Monticelli, A. Frignani, F. Zucchi: Corros. Sci. 46 (2004), p.1225.

[15] G. Bolelli, R. Giovanardi, L. Lusvarghi, T. Manfredini: Corros. Sci. 48 (2006), p.3375.

[16] P.M. Natishana, S.H. Lawrencea, R.L. Fosterb, J. Lewisb, B.D. Sartwella: Surf. Coat. Technol. 130 (2000), p.218.

[17] M.P. Nascimento, R.C. Souza, I.M. Miguel, W.L. Pigatin, H.J.C. Voorwald: Surf. Coat. Technol. 138 (2001), p.113.

[18] Sh. Khameneh Asl, M.H. Sohi, S.M.M. Hadavi, Proceedings of the Second Congress of Iran Metallurgist Association, Sharif University of Technology, Tehran (1998), p.557.

[19] Sh. Khameneh Asl, M.R. Saghi Beyragh, A Comparative Study on Corrosion Behavior of the Standard, Crack Free and Duplex Hard Chromium Coatings, 8 th International electrochemistry meeting in turkey, Antalya, Turkey, 8-11 October, (2009).

DOI: 10.1016/j.surfcoat.2010.10.009

[20] Sh. Khameneh Asl, M.R. Saghi Beyragh, The Effect of Different Chromium Layers on Steel/Chromium Interface Corrosion, 23rd European Colloid and Interface Society Meeting and the 3rd Workshop of COST Action D43, Antalya, Turkey, 6-11 September, (2009).

[21] C.J. Li, A. Ohmori and Y. Harada: J. Therm. Spray Technol. Vol. 5 (1) (1996), p.69.

[22] J.E. Cho, S.Y. Hwang, K.Y. Kim: Surf. Coat. Technol. 200 (2006), p.2653.

[23] D. Toma, W. Brandl, G. Marginean: Surf. Coat. Technol. 138 (2001), p.149.

[24] D. Chidambaram, C.R. Clayton, M.R. Dorfman: Surf. Coat. Technol. 176 (2004), p.307.