Improving of steel superficial properties through thermal sprayed coatings Online publication date: Wed, 02-Jul-2014
by A. Astarita; M. Durante; A. Langella; Antonino Squillace
International Journal of Surface Science and Engineering (IJSURFSE), Vol. 7, No. 4, 2013
Abstract: In many industrial applications it could be useful to cover the mechanical components with harder coatings. For this reason, thermal spray technology is finding widespread use due to the high wear and corrosion resistance of the coatings achieved with these technologies. This paper is focused on the study of two different techniques, high-velocity oxygen fuel and air plasma spray. In particular, two different coatings sprayed on a steel surface were studied. In order to characterise the coatings a whole experimental campaign was carried out. Moreover, both the adhesion to the surface and the wear properties in different conditions were evaluated. In order to evaluate the attitude of these technologies to realise thick coatings were tested coatings with different thickness. The obtained results suggest that both the different coatings typology tested have an optimal internal cohesion, a good adhesion on the substrate and good wear resistance.
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