Chapter 31. Surface Characterization of Plasma Sprayed Hydroxyapatite Coatings

  1. Todd Jessen and
  2. Ersan Ustundag
  1. Limin Sun1,
  2. Christopher C. Berndt1,
  3. A. Kucuk1,
  4. R. S. Lima1 and
  5. K. A. Khor2

Published Online: 28 MAR 2008

DOI: 10.1002/9780470294635.ch31

24th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: B: Ceramic Engineering and Science Proceedings, Volume 21, Issue 4

24th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: B: Ceramic Engineering and Science Proceedings, Volume 21, Issue 4

How to Cite

Sun, L., Berndt, C. C., Kucuk, A., Lima, R. S. and Khor, K. A. (2008) Surface Characterization of Plasma Sprayed Hydroxyapatite Coatings, in 24th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: B: Ceramic Engineering and Science Proceedings, Volume 21, Issue 4 (eds T. Jessen and E. Ustundag), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470294635.ch31

Author Information

  1. 1

    Department of Materials Science and Engineering State University of New York at Stony Brook Stony Brook, New York, 11794–2275 USA

  2. 2

    School of Mechanical and Production Engineering Nanyang Technological University, Singapore 639798

Publication History

  1. Published Online: 28 MAR 2008
  2. Published Print: 1 JAN 2000

ISBN Information

Print ISBN: 9780470375693

Online ISBN: 9780470294635

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Keywords:

  • hydroxyapatite;
  • atmospherically plasma sprayed;
  • crystalline phases;
  • fourier transform infrared (FTIR);
  • oxyhydroxyapatite

Summary

Plasma sprayed hydroxyapatite (HA) coatings have been widely used for dental and orthopedic applications for fast fixation between the implant and the human anatomy. In this study, the HA coatings were atmospherically plasma sprayed (APS) using different spray power and stand-off distance (SOD), and the coating surfaces were characterized using various methods. X-ray diffraction (XRD) revealed the presence of crystalline HA, amorphous calcium phosphate (ACP) and some other crystalline phases including tricalcium phosphate (α-TCP and β-TCP), tetracalcium phosphate (TTCP) and calcium oxide (CaO). Fourier transform infrared (FIIR) spectroscopy showed that both OH and PO43- bands of HA changed after spraying and the HA phase identified by XRD was actually the solid solution of oxyapatite (OAp) in HA, i.e., oxyhydroxyapatite (OHA). The phase composition of the HA coatings varied with respect to the spray power and SOD. The surface morphology and roughness were analyzed via scanning electron microscopy (SEM) and profilometry respectively, and the results related to the phase composition.