A Comparison of Flame Coating and Laser Cladding Using Ni Based Powders

Abstract:

This paper addresses to the characterization of Ni based coatings realized by two different processes e.g. thermal spray coating and laser cladding. For the relevance of the experimental tests, the same base material, AISI 5140 and Metco 15E powder was used. The results highlight the advantages and disadvantages of the both techniques. The cladded layer obtained through laser cladding is pore and crack free, being characterized by a high hardness and a very good adherence to the substrate, while the flame coating presents oxides inclusions, high porosity, lower hardness and minimal dilution with the substrate as resulted from the EDS analyses. In depth characterization of the samples is made using optical and scanning electron microscopy, EDS analysis and microhardness testing.

• Periodical: Solid State Phenomena (Volume 254)
• Pages: 77-82
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.254.77
• Online since: August 2016
• Authors: Alexandru Pascu*, Iosif Hulka, Mircea Horia Tierean, Catalin Croitoru, Elena Manuela Stanciu, Ionut Claudiu Roată
• Keywords: Laser Cladding, Metallization, Metco 15E

References

[1] A. Pascu, R. Iovănaș, D. Petre, Roată I., Industrial aplication of high power diode pumped solid state laser for welding technology, Bulletin of the Transilvania University of Brașov, (2009), 175-179.

[2] I. C. Roată, A. Pascu, E. M. Stanciu, Influence of the Electric Field Voltage on the Microhardness of the Layers Coated by Thermal Spraying, Solid State Phenomena, Vol 216, (2014), 316-321.

DOI: 10.4028/www.scientific.net/ssp.216.316

[3] E. Toyserkani, Amir Khajepour, S. Corbin, Laser cladding, CRC Press, ISBN 0-8493-2172-7, (2004).

[4] I. Hemmati, V. Ocelı´k, J. Th.M. De Hosson, Effects of the alloy composition on phase constitution and properties of laser deposited Ni-Cr-B-Si coatings. Physics Procedia 41, (2013), 302 – 311.

DOI: 10.1016/j.phpro.2013.03.082

[5] I. Hemmati, V. Ocelı´k, J. Th.M. De Hosson, Dilution effects in laser cladding of Ni–Cr–B–Si–C hardfacing alloys. Materials Letters 84, (2012), 69–72.

DOI: 10.1016/j.matlet.2012.06.054

[6] R. González, M. Cadenas, , R. Fernández, J.L. Cortizo, E. Rodríguez, Wear behaviour of flame sprayed NiCrBSi coating remelted by flame or by laser, Wear, Volume 262, Issues 3–4, (2007), 301–307.

DOI: 10.1016/j.wear.2006.05.009

[7] Š. Houdková, , E. Smazalová, M. Vostřák, J. Schubert, Properties of NiCrBSi coating, as sprayed and remelted by different technologies, Surface and Coatings Technology Volume 253, 25 (2014), 14–26.

DOI: 10.1016/j.surfcoat.2014.05.009

[8] A. Pascu, R. Iovanas, D. Iordachescu, A. Cuesta, Effects of the laser beam intensity on the cladded layer geometry and microstructure, Metalurgia International, 16 (5), (2011), 125-128.

[9] I.C. Roata, R. Iovanas, A. Pascu, Influence of the metallizing distance variation and of the electric field voltage on the ohmic resistance of the layers deposited by thermal spraying, Metalurgia International, Vol. XVII, Special Issue no. 6, (2013).