Hydroxyapatite Coating on Ti-6Al-4V Alloy by an Electrolytic Process and with Heat-Treatment


Article Preview

The effect of the heat-treatment on the calcium phosphate deposited on Ti-6Al-4V substrate by an electrolytic process has been investigated. The calcium phosphate were deposited in a 0.04M Ca(H2PO4)2・H2O (MCPM) solution on Ti-6Al-4V substrate at 60 °C, 10V and 80 Torr for 1h, and calcined at different temperature for 4h. X-ray diffraction (XRD) and scanning electron microscopy (SEM) were used to characterized the deposited samples. The XRD pattern of as-deposited sample contain the phase of dicalcium phosphate (DCPD) and HAP. When calcined at 400 °C for 4 h, the DCPD phase is vanished and HAP becomes the major phase. The XRD pattern reveals that the intensity of HAP and Ca2P2O7 (CPP) decreases, but the β-TCP, CaO and rutile TiO2 also shows up.



Materials Science Forum (Volumes 631-632)

Edited by:

Akira Kawasaki, Akinaga Kumakawa and Masayuki Niino




C. L. Wang et al., "Hydroxyapatite Coating on Ti-6Al-4V Alloy by an Electrolytic Process and with Heat-Treatment", Materials Science Forum, Vols. 631-632, pp. 407-412, 2010

Online since:

October 2009




[1] B. Koch, J.G.C. Wolke, K. de Groot, X-ray diffraction studies on plasma-sprayed calcium phosphate-coated implants, J. Biomed. Mater. Res., Vol. 24 (1990), pp.665-667.

DOI: https://doi.org/10.1002/jbm.820240603

[2] T.V. Vijayaraghavan, A. Bensalem, Electrodeposition of apatite coating on pure titanium alloys, J. Mater. Sci. Lett., Vol. 10 (1994), pp.1782-1785.

DOI: https://doi.org/10.1007/bf00776358

[3] M.H.P. Da Silva, J.H.C. Lima, G.A. Soares, C.N. Elias, M.C. de Andrade, S.M. Best and I.R. Gibson, Transformation of monetite to hydroxyapatite in bioactive coatings on titanium, Surf. Coatings Tech., Vol. 137 (2001), pp.270-276.

DOI: https://doi.org/10.1016/s0257-8972(00)01125-7

[4] M. Mansol, G. Jiménez, C. Morant, P. Herrero, and JM Maetínez-Duart, Electrodeposition of hydroxyaptite coating in basic conditions, Biomaterials, Vol. 21 (2000), pp.1755-1761.

[5] F.C. M Driessens, in Bioceramics ofcalcium phosphate, edited by K. de Groot (CRC Press Inc., Boca Ration, FL, 1983) p.2.

[6] K. Kamiya, T. Yoko, K. Tanaka, Y. Fujiyama, Growth of fibrous hydroxyapatite in the gel system, J. Mater. Sci., Vol. 24 (1989), pp.827-832.

DOI: https://doi.org/10.1007/bf01148764