Gas-Dynamic Spraying of Hydroxyapatite on Medical
Instruments
from Titanium Alloy

D. A. Pervushin^a,b,*, I. V. Shishkovsky^a,**, and I. Yu. Smurov^b,*

^aSamara State Technical University, ul. Molodogvardeiskaya 144, Samara, 443110 Russia

^bUniversité de Lyon, Ecole Nationale d Ingéneieurs de Saint-Etienne (ENISE),
58 rue Jean Parot, 42023 Saint-Étienne Cedex 2, France

*e-mail: smurov@enise.fr

**e-mail: shiv@fian.smr.ru

Abstract—The applicability of hydroxyapatite powder for the D-gun spraying of medical instruments made of
titanium alloys is investigated. Previously determined parameters of spraying are refined in order to attain good
adhesion binding of the coating with the substrate. The multizone character of sprayed microstructures is shown
by the results of optical and electron scanning microscopy with energy dispersive microanalysis. It is estab-
lished that hydroxyapatite is not subjected to substantial variations after spraying, which is important for med-
ical applications.

Keywords: cool spraying and D-gun spraying, hydroxyapatite ceramics, titanium alloys, nitinol, medical instru-
ments

DOI: 10.3103/S1067821214030158

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