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Interfacial Fracture Toughness of a Plasma Sprayed Hydroxyapatite Coating Used for Orthopedic Implants

Published online by Cambridge University Press:  15 February 2011

Y. Sugimura  and
M. Spector
Y. Sugimura
Affiliation:
Division of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, [email protected]
M. Spector
Affiliation:
Department of Orthopedic Surgery, Brigham and Women's Hospital, Boston, MA 02115
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Abstract

This study introduces a new method for evaluating the adhesion strength of a coating on a substrate. The interfacial fracture toughness, Γi is used to assess the work per unit area required to separate an interface. Γi is measured for the as-received specimens of hydroxyapatite plasma sprayed on Ti-6A1-4V substrate. Calculation of the interfacial fracture toughness requires that the elastic modulus of the coating to be known. The Young's modulus of the plasma sprayed hydroxyapatite is assessed using a bend test. The effect of aqueous environment on the interfacial fracture toughness is also investigated.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 550: Symposium GG/HH/II – Biomedical Materials-Drug Delivery, Implants and Tissue Engr , 1998 , 367
Copyright
Copyright © Materials Research Society 1999

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References

1. Bagchi, A., Lucas, G.E., Suo, Z. and Evans, A.G., J. Mater. Res. 9, 1734 (1994).Google Scholar
2. Hutchinson, J.W. and Suo, Z., Adv. Appl. Mech. 29, 63 (1991).Google Scholar
3. Bagchi, A. and Evans, A.G., Interface Science, 3, 169 (1996).Google Scholar
4. Sugimura, Y., Meyer, J., He, M.Y., Bart-Smith, H., Grenestedt, J. and Evans, A.G., Acta Mater. 45, 5245 (1997).Google Scholar
5. Suchanek, W. and Yoshimura, M., J. Mater. Res. 13, 94 (1998).Google Scholar
6. Gibson, L.J and Ashby, M.F., Cellular Solids: Structure and Properties, 2nd ed. (Cambridge University Press, Cambridge, 1997), p. 175.Google Scholar
7. Wanner, A., Mater. Sci. and Engg. A. (1998), in press.Google Scholar
8. Porter, D.F., Reed, J.S., and Lewis, D. III, J. Am. Ceram. Soc. 60, 345 (1977).Google Scholar