Hydroxyapatite coatings prepared by a high power laminar plasma jet |
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Authors: | Miroljub Vilotijevi? Petar Markovi?Slavica Zec Slobodan Marinkovi?Vukoman Jokanovi? |
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Affiliation: | a Plasma Jet Co, Branicevska 29, 11000 Belgrade, Serbia b VINCA Institute of Nuclear Sciences, Mike Petrovica Alasa 12-14 Belgrade, Serbia |
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Abstract: | For two hydroxyapatite (HA) powders, containing particles differing in mass by a factor of 20, a set of optimum deposition parameters was defined, leading to the coatings with high crystallinity (80-90%), high adhesion strength (60 and 40 MPa for the coating thicknesses of 120 μm and 350 μm, respectively) and excellent microstructure (coatings were without micro- or macro-cracks, without delaminating on substrate-coating surface contact, and possess low porosity, 1-2%). It was shown that higher plasma power (52 kW) did not necessarily lead to a higher HA decomposition. |
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Keywords: | Hydroxyapatite coating Plasma spraying Bonding strength Phase composition |
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