Skip to main content Accessibility help

Formation and characterization of hydroxyapatite coating layer on Ti-based metal implant by electron-beam deposition

  • Jae-Man Choi (a1), Young-Min Kong (a1), Sona Kim (a1), Hyoun-Ee Kim (a1), Cheol Seong Hwang (a1) and In-Seop Lee (a2)...


A hydroxyapatite [HAp; Ca10(PO4)6(OH)2] coating layer was formed on a Ti-based alloy by the electron-beam deposition method. When pure HAp was used as a target for the deposition, an amorphous layer was formed on the metal substrate. By heat treatment in a vacuum at 630 °C, the layer was crystallized into tricalcium phosphate [Ca3(PO4)2]. The crystallization improved the dissolution rate of the layer remarkably; however, at the same time, it deteriorated the bond strength with the substrate. When extra CaO (up to 25 wt%) was added to the target and processed under the same conditions, a layer compositionally close to crystalline HAp was deposited. Before the heat treatment, even though the layer was in amorphous state, the dissolution rate in the physiological solution was extremely low. Furthermore, the bond strength increased remarkably compared to the layer formed by the pure HAp target. Compositional and structural resemblance of the layer with the crystalline HAp was attributed to these improvements in properties.



Hide All
1.Park, J. B. and Lakes, R. S., Biomaterials, An Introduction, 2nd ed. (Plenum Press, New York, 1992), Ch. 5, pp. 79115.
2.Lacefield, W. R., in An Introduction to Bioceramics, edited by Hench, L.L. and Wilson, J. (World Scientific Publishing Co., Singapore, 1993), pp 223–38.
3.Hench, L.L., J. Am. Ceram. Soc. 81, 1705 (1998).
4.Suchanek, W. and Yoshimura, M., J. Mater. Res. 13, 94 (1998).
5.LeGeros, R.Z., Clin. Mater. 14, 65 (1993).
6.Wang, S., Lacefield, W.R., and Lemons, J.E., Biomaterials 17, 1965 (1996).
7.van Dijk, K., Schaeken, H.G., Wolke, J.G.C., and Jansen, J.A., Biomaterials 17, 405 (1996).
8.Ducheyne, P., Raemdonck, W.V., Heughebaert, J.C., and Heughebaert, M., Biomaterials 7, 97 (1986).
9.Lacefield, W.R., Ann. N.Y. Acad. Sci. 523, 72 (1988).
10.Tsui, Y.C., Doyle, C., and Clyne, T.W., Biomaterials 17, 2015 (1998).
11.Zyman, Z., Weng, J., Liu, X., Zhang, X., and Ma, Z., Biomaterials 14, 225 (1993).
12.Ji, H. and Marquis, P.M., Biomaterials 14, 64 (1993).
13.Chen, J., Wolke, J.G.C., and de Groot, K., Biomaterials 15, 396 (1994).
14.Brossa, F., Cigada, A., Chiesa, R., Paracchini, L., and Consonni, C., J. Mater. Sci. Mater. Med. 5, 855 (1994).
15.Chen, J., Tong, W., Cao, Y., Feng, J., and Zhang, X., J. Biomed. Mater. Res. 34, 15 (1997).
16.Ong, J.L., Lucas, L.C., Lacefield, W.R., and Rigney, E.D., Biomaterials 13, 249 (1992).
17.Chen, T.S. and Lacefield, W.R., J. Mater. Res. 9, 1284 (1994).
18.Yoshinari, M., Ohtsuka, Y., and Derand, T., Biomaterials 15, 529 (1994).
19.Singh, R.K., Qian, F., Nagabushnam, V., Damodaran, R., and Moudgil, B.M., Biomaterials 15, 522 (1994).
20.Cotell, C.M., Chrisey, D.B., Grabowski, K.S., and Spregue, J.A., J. Appl. Biomater. 8, 87 (1992). Groot, K., Klein, C.P.A.T., Wolke, J.G.C., and de Blieck-Hogervorst, J.M.A., in CRC Handbook of Bioceramics, Vol. II, Calcium Phosphate and Hydroxyapatite Ceramics, edited by Yamamuro, T., Hench, L.L., and Wilson, J. (CRC Press, Boca Raton, FL, 1990), pp. 315.
22.Choi, J-W., Kong, Y-M., Kim, H-E., and Lee, I-S., J. Am. Ceram. Soc. 81, 1743 (1998).
23.Gross, K.A., Gross, V., and Berndt, C.C., J. Am. Ceram. Soc. 81, 106 (1998).


Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed