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Lee, Sukbin
Multidimensional Structural Materials Lab
Research Interests
  • Microstructural evolution, advanced characterization, computational materials science, 3D materials science, microstructure-property relation

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Crystallographic texture in pulsed laser deposited hydroxyapatite bioceramic coatings

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Title
Crystallographic texture in pulsed laser deposited hydroxyapatite bioceramic coatings
Author
Kim, HyunbinCamata, Renato P.Lee, SukbinRohrer, Gregory S.Rollett, Anthony D.Vohra, Yogesh K.
Keywords
Ceramics; Coating; Hydroxyapatite; Laser deposition; Texture
Issue Date
2007-01
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Citation
ACTA MATERIALIA, v.55, no.1, pp.131 - 139
Abstract
The orientation texture of pulsed laser deposited hydroxyapatite coatings was studied by X-ray diffraction techniques. Increasing the laser energy density of the KrF excimer laser used in the deposition process from 5 to 7 J/cm2 increases the tendency for the c-axes of the hydroxyapatite grains to be aligned perpendicular to the substrate. This preferred orientation is most pronounced when the incidence direction of the plume is normal to the substrate. Orientation texture of the hydroxyapatite grains in the coatings is associated with the highly directional and energetic nature of the ablation plume. Anisotropic stresses, transport of hydroxyl groups and dehydroxylation effects during deposition all seem to play important roles in the texture development.
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DOI
10.1016/j.actamat.2006.08.008
ISSN
1359-6454
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MSE_Journal Papers
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