Preparation and analysis of chemically gradient functional bioceramic coating formed by pulsed laser deposition

  • P. Rajesh
  • C. V. Muraleedharan
  • S. Sureshbabu
  • Manoj Komath
  • Harikrishna Varma


Bioactive ceramic coatings based on calcium phosphates yield better functionality in the human body for a variety of metallic implant devices including orthopaedic and dental prostheses. In the present study chemically and hence functionally gradient bioceramic coating was obtained by pulsed laser deposition method. Calcium phosphate bioactive ceramic coatings based on hydroxyapatite (HA) and tricalcium phosphate (TCP) were deposited over titanium substrate to produce gradation in physico-chemical characteristics and in vitro dissolution behaviour. Sintered targets of HA and α-TCP were deposited in a multi target laser deposition system. The obtained deposits were characterized by X-ray diffraction, fourier transform infrared spectroscopy, scanning electron microscopy and energy dispersive X-ray analysis. Inductively coupled plasma spectroscopy was used to estimate the in vitro dissolution behaviour of coatings. The variation in mechanical property of the gradient layer was evaluated through scratch test and micro-indentation hardness. The bioactivity was examined in vitro with respect to the ability of HA layer to form on the surface as a result of contact with simulated body fluid. It could be inferred that chemically gradient functional bioceramic coating can be produced by laser deposition of multiple sintered targets with variable chemical composition.


Apatite Simulated Body Fluid Pulse Laser Deposition Dissolution Behaviour Titanium Substrate 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



The authors gratefully acknowledge The Director and Head, Biomedical Technology Wing, SCTIMST for extending the research facilities to successfully carry out this work. Rajesh P acknowledges Kerala State Council for Science Technology and Environment (KSCSTE) for the research fellowship.


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Copyright information

© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  • P. Rajesh
    • 1
  • C. V. Muraleedharan
    • 2
  • S. Sureshbabu
    • 1
  • Manoj Komath
    • 1
  • Harikrishna Varma
    • 1
  1. 1.Bioceramics Laboratory, Biomedical Technology WingSree Chitra Tirunal Institute for Medical Sciences and Technology (SCTIMST)TrivandrumIndia
  2. 2.Division of Artificial Internal Organs, Biomedical Technology WingSree Chitra Tirunal Institute for Medical Sciences and Technology (SCTIMST)TrivandrumIndia

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