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The nano-scratch behavior of biocompatible hydroxyapatite reinforced with aluminum oxide and carbon nanotubes

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Abstract

Hydroxyapatite (HA) reinforced with sub-micrometer Al2O3 and carbon nanotubes (CNTs) has been synthesized as a coating on the Ti-6Al-4V substrate via plasma spraying. The addition of Al2O3 and CNTs to HA has shown improvement in the hardness and elastic modulus by 65% and 50%, respectively, when compared to HA. Consequently, HA-Al2O3-CNT coatings have been nano-scratched to understand their wear performance. Reinforcement of HA by Al2O3 shows a decrease in the wear volume by more than 13 times, whereas HA-Al2O3-CNT coating demonstrated further wear volume reduction of five times compared to that of HA-Al2O3 coating.

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Authors and Affiliations

  1. Department of Materials and Metallurgical Engineering, Indian Institute of Technology Kanpur, Kanpur, 208 016, India

    Kantesh Balani

  2. Department of Mechanical and Materials Engineering, Florida International University, Miami, Florida, USA

    Debrupa Lahiri, Anup K. Keshri, S. R. Bakshi & Arvind Agarwal

  3. Separation Technologies, LLC, Coral Gables, Florida, USA

    Jorge E. Tercero

Authors
  1. Kantesh Balani
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  2. Debrupa Lahiri
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  3. Anup K. Keshri
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  4. S. R. Bakshi
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  5. Jorge E. Tercero
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  6. Arvind Agarwal
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Correspondence to Kantesh Balani.

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Balani, K., Lahiri, D., Keshri, A.K. et al. The nano-scratch behavior of biocompatible hydroxyapatite reinforced with aluminum oxide and carbon nanotubes. JOM 61, 63–66 (2009). https://doi.org/10.1007/s11837-009-0136-1

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  • DOI: https://doi.org/10.1007/s11837-009-0136-1

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