Adhesion of composite carbon-hydroxyapatite coatings deposited on 316L stainless steel

Bożena Pietrzyk ,  Agata Niedzielska ,  Jakub Gawroński 

Technical University of Lodz, Institute of Materials Science and Engineering, 1/15 Stefanowskiego, Łódź 90-924, Poland

Abstract

Hydroxyapatite (HAP) is the main inorganic component of natural bones and teeth. It has attracted widespread interest due to its biocompatibility and bioactivity properties. HAP coatings are used to promote osteoconductive bonding of metallic implants with bone. One of the main problems of these coatings is the low adherence. An interesting solution of the improving adhesion of HAP coating to metallic substrate can be using carbon interlayer.

In the present work carbon-HAP bilayer coating was prepared. The carbon film was deposited on the 316L stainless steel by RF PACVD method. Next, the HAP film was prepared by sol-gel or PLD methods. These films were characterized using FTIR, EDS and microscratch adhesion testing.

It was found that carbon interlayer significantly improved adhesion of HAP to steel substrate but character of adherence was quite different in depending on deposition method: adhesive for HAP deposited by PLD method and diffusive for HAP deposited by sol-gel technique.

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Presentation: Poster at E-MRS Fall Meeting 2008, Symposium H, by Bożena Pietrzyk
See On-line Journal of E-MRS Fall Meeting 2008

Submitted: 2008-05-12 19:32
Revised:   2009-06-07 00:48
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