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Effect of phosphorous ion implantation on the mechanical properties and bioactivity of hydroxyapatite

  • Biomaterials Synthesis and Characterization
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Abstract

Hydroxyapatite (HA) has ability of bone-like apatite formation, which consists with chemical interaction between the surface of HA and ions included in body fluid. Thus, proper surface modification might enhance the function. In the present study, the effect of phosphorous ion implantation on mechanical properties and bioactivity of HA was investigated. In order to clarify the effect of ion implantation dose, ion dose of 1 × 1012, 1 × 1013 and 1 × 1014 ions/cm2 were selected. Mechanical properties and bioactivity were evaluated in 4-point bending tests and immersion test in simulated body fluid. Bending strength was reduced due to ion implantation. The amount of decreasing strength was similar regardless of ion implantation dose. Bone-like apatite formation was slightly delayed with ion implantation, however, improvement in interfacial strength between bone-like apatite layer and the base HA was indicated. From the results, the possibility of phosphorous ion implantation for enhancement of bioactivity of HA was proved.

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Authors and Affiliations

  1. Graduate School of Science and Engineering, Tokyo Metropolitan University, 1-1 Minami-Osawa, Hachioji, Tokyo, 192-0397, Japan

    Satoshi Kobayashi & Takehiro Muramatsu

  2. Tokyo Metropolitan Industrial Technology Research Institute, 2-4-10 Aomi, Koto, Tokyo, 135-0064, Japan

    Yoshikazu Teranishi

Authors
  1. Satoshi Kobayashi
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  2. Takehiro Muramatsu
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  3. Yoshikazu Teranishi
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Correspondence to Satoshi Kobayashi.

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Kobayashi, S., Muramatsu, T. & Teranishi, Y. Effect of phosphorous ion implantation on the mechanical properties and bioactivity of hydroxyapatite. J Mater Sci: Mater Med 26, 27 (2015). https://doi.org/10.1007/s10856-014-5351-9

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  • DOI: https://doi.org/10.1007/s10856-014-5351-9

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