Effect of Bond Coat Diffusion on Adhesion Behaviour of Hard Alloy Powder NiCrBCSi (Fe) Coatings Thermally Sprayed on 60CrMn4 Steel |
| Journal |
Defect and Diffusion Forum (Volumes 273 - 276) |
| Volume |
Diffusion in Solids and Liquids III |
| Edited by |
Andreas Öchsner and Graeme E. Murch |
| Pages |
8-13 |
| DOI |
10.4028/www.scientific.net/DDF.273-276.8 |
| Online since |
February, 2008 |
| Authors |
S. Abdi,
B. Malki,
S. Lebaili
|
| Keywords |
Adhesion, Bond Coat Diffusion, Nickel Based Alloy, Thermal Spraying |
| Abstract |
The object of the present work is to study the spraying of poly-powders nickel bases
containing Cr, Si, C and B elements addition with variable percentage of iron, deposited on a steel
substrate by oxy fuel thermal spraying. The substrate surface was previously treated by Al–Ni bond
coat and post–annealing at 650°C. The spraying powder and coating micro structure were
investigated by combination of X-ray diffraction, electron microprobe and scanning electron
microscope coupled to an analyzer energy dispersive x-ray. The adherence to substrate was
determined by using shear test for adhesion. The result of this study was to investigate to compare
potentials of HVOF sprayed NiCrBCSi and satellite 6 coating for a possible to replacement of hard
chromium plating. A good adherence of coating NiCrBCSi (Fe) on steel substrate is explained by
formation of large diffusion zone in interface after annealing and by the nature of the structure
deposit duplexes. |
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