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Graded glass coatings for Co-Cr implant alloys

  • Proceedings of the IV International Conference High Temperature Capillarity
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Abstract

A graded glass coating for Vitallium®, a Co-Cr alloy, has been prepared using a simple enameling technique. The composition of the glasses has been tailored to match the thermal expansion of the alloys. The optimum glass composition and firing conditions (temperature and time) needed to fabricate homogeneous coatings with good adhesion to the alloy were determined. The final coating thickness ranged between 25 and 60 μm. Coatings fired under optimum conditions do not delaminate during indentation tests of adhesion. Excellent adhesion to the alloy has been achieved through the formation of 100 nm thick interfacial chromium-oxide (CrOx) layers. The graded glass (consisting of BIG and 6P50 layers) can be successfully coated to a Co-Cr alloy, and forms hydroxyapatite (HA) on the coating surface when immersed in a simulated body fluid (SBF) for 30 days.

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Authors and Affiliations

  1. Department of Engineering Sciences for Electronics and Materials, Kyushu University, Kasuga-shi, Fukuoka, 816-8580, Japan

    S. Fujino & S. Hata

  2. Department of Applied Sciences for Electronics and Materials, Kyushu University, Kasuga-shi, Fukuoka, 816-8580, Japan

    H. Tokunaga

  3. Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA

    E. Saiz & A. P. Tomsia

Authors
  1. S. Fujino
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  2. H. Tokunaga
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  3. S. Hata
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  4. E. Saiz
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  5. A. P. Tomsia
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Correspondence to S. Fujino.

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Fujino, S., Tokunaga, H., Hata, S. et al. Graded glass coatings for Co-Cr implant alloys. J Mater Sci 40, 2499–2503 (2005). https://doi.org/10.1007/s10853-005-1982-z

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  • DOI: https://doi.org/10.1007/s10853-005-1982-z

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