2011, Number 2
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Rev Cubana Invest Bioméd 2011; 30 (2)
A preliminary study about HAP-200 hydroxyapatite coatings obtained by atmospheric plasma
Fumero PA, López SH, Goyos PL, Alves JC, Lariot SC
Language: Spanish
References: 10
Page: 280-291
PDF size: 268.80 Kb.
ABSTRACT
Hydroxyapatite is classified as a bioactive material whose ability of interaction with
bone allowed its use in a satisfactory way for orthopedic and dental application. In
present paper the hydroxyapatite produced by the National Center of Scientific
Researches, was projected by means of an atmospheric plasma torch on an
austenitic stainless steel substrate. The particles' size was determined by laser
dispersion and the projection distance fluctuates between 20 and 60 mm. The
microstructure and the powder phase composition, as well as the coating achieved
were examined by optical microscopy, scanning electron microscopy and X-rays
diffraction (XRD). The coating's point chemical composition was analyzed by
energy-dispersion spectrometry (EDS) and the hardness, layer thickness and
crystallization were measured. Results showed that crystallization decreases
according to the increase of projection distance, but not its hardness and layer
thickness.
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