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Laser surface modification for synthesis of textured bioactive and biocompatible Ca–P coatings on Ti–6Al–4V

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Abstract

A textured calcium phosphate based bio-ceramic coating was synthesized by continuous wave Nd:YAG laser induced direct melting of hydroxyapatite precursor on Ti–6Al–4V substrate. Two different micro-textured patterns (100 μm and 200 μm line spacing) of Ca–P based phases were fabricated by this technique to understand the alignment and focal adhesion of the bone forming cells on these surfaces. X-ray diffraction studies of the coated samples indicated the presence of CaTiO3, α-Ca3(PO4)2, Ca(OH)2, TiO2 (anatase) and TiO2 (rutile) phases as a result of the intermixing between the precursor and substrate material during laser processing. A two dimensional elemental mapping of the cross-section of the coated samples exhibited the presence of higher phosphorous concentration within the coating and a thin layer of calcium concentration only at the top of the coating. Improved in vitro bioactivity and in vitro biocompatibility was observed for the laser processed samples as compared to the control.

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Authors and Affiliations

  1. Department of Materials Science and Engineering, University of North Texas, Denton, TX, 76207, USA

    Sameer R. Paital, Peeyush Nandwana, Soumya Nag, Rajarshi Banerjee & Narendra B. Dahotre

  2. Center for Advanced Research and Technology, University of North Texas, Denton, TX, 76207, USA

    Nancy Bunce

  3. Metallurgical and Materials Engineering, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India

    Chinmay Honrao

  4. Department of Materials Science and Engineering, The University of Tennessee, Knoxville, TN, 37996, USA

    Wei He

  5. Department of Mechanical, Aerospace and Biomedical Engineering, The University of Tennessee, Knoxville, TN, 37996, USA

    Wei He

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  1. Sameer R. Paital
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  2. Nancy Bunce
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  3. Peeyush Nandwana
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  4. Chinmay Honrao
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  6. Wei He
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  8. Narendra B. Dahotre
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Correspondence to Narendra B. Dahotre.

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Paital, S.R., Bunce, N., Nandwana, P. et al. Laser surface modification for synthesis of textured bioactive and biocompatible Ca–P coatings on Ti–6Al–4V. J Mater Sci: Mater Med 22, 1393–1406 (2011). https://doi.org/10.1007/s10856-011-4321-8

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  • DOI: https://doi.org/10.1007/s10856-011-4321-8

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