The Paton Welding Journal, 2011, №12



2011 №12 (07)

2011 №12 (09)

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The Paton Welding Journal, 2011, #12, 38-40 pages  

TWO-LAYER BIO-CERMET TITANIUM-HYDROXYAPATITE COATING

K.A. YUSHCHENKO, Yu.S. BORISOV, S.G. VOJNAROVICH, A.N. KISLITSA and E.K. KUZMICH-YANCHUK

E.O. Paton Electric Welding Institute, NASU, Kiev, Ukraine
 
 
Abstract
It is suggested using two-layer bio-cermet (titanium-hydroxyapatite) coatings for titanium alloy endoprostheses. A combination of porous titanium with an external hydroxyapatite (HA) layer provides high strength of adhesion of such coatings to the surfaces of endoprostheses (24-25 MPa) and subsequent active growth of bone tissue into them. The microplasma spraying technology allows formation of the HA layer with the 88-98 % content of the crystalline phase, thus providing a high degree of utilisation of the powder (up to 90 %) in spraying and increasing the cost effectiveness of the process.
 
 
Keywords: microplasma spraying, medical-application coatings, bio-compatible coatings, porous titanium, hydroxyapatite, endoprosthetics, hip joint
 
 
Received:                ??.??.??
Published:               28.12.11
 
 
References
1. Kanazawa, T. (1998) Inorganic phosphate materials. Kiev: Nauka.
2. Shpak, A.P., Karbovsky, V.L., Grachevsky, V.V. (2002) Apatites. Kiev: Akademperiodika.
3. Kalita, V.I. (2000) Physics and chemistry of formation of bio-inert and bio-active surfaces on implants (Review). Fizika i Khimiya Obrab. Materialov, 5, 28-45.
4. http://www.biomet.co.uk
5. http://www.stryker.com
6. Yang, C.Y., Wang, B.C., Chang, E. et al. (1995) The influences of plasma spraying parameters on the characteristics of hydroxyapatite coatings: a quantitative study. J. Materials Sci.: Materials in Medicine, 6, 249-257.
7. Borisov, Yu.S., Vojnarovich, S.G., Fomakin, O.O. et al. Plasmatron for spraying of coatings. Pat. 2002076032 Ukraine. Int. Cl. B 23 K 10/00. Fil. 19.07.2002. Publ. 16.06.2003.
8. Borisov, Yu.S., Vojnarovich, S.G., Bobrik, V.G. et al. (2000) Microplasma spraying of bio-ceramic coatings. The Paton Welding J., 12, 62-66.
9. Borisov, Yu.S., Vojnarovich, S.G., Ulianchich, N.V. et al. (2002) Investigation of bio-ceramic coatings produced by microplasma spraying. Ibid., 9, 4-6.
10. Vojnarovich, S.G. (2010) Effect of microplasma spraying parameters on material utilisation factor in spraying of bioceramic coating. Zbirka Nauk. Pr. Nats. Un-tu Korablebuduvannya, 433(4), 58-61.
11. Brekhov, O.M., Eliseev, S.L., Ulianchich, N.V. et al. Cermet implant for interbody vertebral spondylosyndesis. Pat. 200112870 Ukraine. Int. Cl. B 23 K 10/10. Fil. 03.12.2001. Publ. 15.03.2002.

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