Apatite-Forming Ability Governing Bone-Bonding of Ti-15Zr-4Nb-4Ta Alloy Subjected to Calcium Solution Treatment

Seiji Yamaguchi; Hiroaki Takadama; Tomiharu Matsushita; Akinobu Fukuda; Takashi Nakamura; Tadashi Kokubo

doi:10.4028/www.scientific.net/KEM.493-494.920

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 493-494Apatite-Forming Ability Governing Bone-Bonding of...

Apatite-Forming Ability Governing Bone-Bonding of Ti-15Zr-4Nb-4Ta Alloy Subjected to Calcium Solution Treatment

Abstract:

Ti-15Zr-4Nb-4Ta alloy is an attractive metal for orthopaedic implants, since it is free from cytotoxic elements and shows high mechanical strength. It was recently shown by an animal experiment [1] that this alloy tightly bonds to living bone, when it was subjected to 5 M NaOH solution and 100 mM CaCl₂ solution treatments, heat treatment at 600 or 700 °C, and final water treatment at 80 °C. The bonding strength was increased markedly when the heat treatment temperature was increased from 600 to 700 °C. This increase of the bonding strength was attributed to the increase in apatite-forming ability of the treated alloy in a simulated body fluid (SBF) [2] with ion concentrations nearly equal to human blood plasma, although its reason was not revealed yet.

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Periodical:

Key Engineering Materials (Volumes 493-494)

Pages:

920-925

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.493-494.920

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Online since:

October 2011

Authors:

Seiji Yamaguchi, Hiroaki Takadama, Tomiharu Matsushita, Akinobu Fukuda, Takashi Nakamura, Tadashi Kokubo

Keywords:

Bioactivity, Calcium Titanate, Simulated Body Fluid (SBF), Ti-15Zr-4Nb-4Ta

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References

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