Processing and characterization of hydroxyapatite coatings on titanium produced by magnetron sputtering

T. G. Nieh, A. F. Jankowski, J. Koike

研究成果: Article査読

66 被引用数 (Scopus)

抄録

Hydroxyapatite (HA) coatings with different thicknesses were produced on Ti and Si substrates using the radio frequency magnetron sputtering method. The mechanical properties, for example, modulus and hardness, of the coatings were measured using nanoindentation. The measured values of modulus and hardness were close to the upper limit of that reported for bulk HA, indicating a fully dense structure. Interfacial strengths between the HA coatings and substrates were also evaluated using a nanoscratch technique. The HA-Ti interface appeared to be stronger than the HA-Si interface. The microstructures of the HA coating and the HA-Ti interface were examined using high-resolution electron microscopy. Chemical compositions of the HA coating and the HA-Ti interface were also analyzed using x-ray energy dispersive spectrometer and electron energy loss spectroscopy. The results indicated that the strong HA-Ti bonding is associated with an outward diffusion of Ti into HA layer and concomitant formation of TiO2 at or near the interface.

本文言語English
ページ(範囲)3238-3245
ページ数8
ジャーナルJournal of Materials Research
16
11
DOI
出版ステータスPublished - 2001 11月

ASJC Scopus subject areas

  • 材料科学(全般)
  • 凝縮系物理学
  • 材料力学
  • 機械工学

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