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Chemija / Chemistry

ISSN 0235-7216
ISSN 2424-4538 (online)

2016 m. Nr. 4

Sol-gel derived calcium hydroxyapatite thin films on 316L stainless steel substrate: comparison of spin-coating and dip-coating techniques
V. JONAUSKĖ, A. PRICHODKO, R. SKAUDŽIUS, A. KAREIVA

Aqueous sol-gel chemistry route has been developed to prepare nanostructured calcium hydroxyapatite (Ca10(PO4)6(OH)2; CHA) thin films on a 316L stainless steel substrate. In the sol-gel processing, calcium acetate monohydrate and phosphoric acid were used as Ca and P precursors, respectively. For the deposition of thin films spin-coating and dip-coating methods were used by coating the stainless steel substrate 5, 15 and 30 times in both cases. Each layer was consistently annealed at 850 °C in air. The obtained CHA coatings were examined using X-ray diffraction analysis (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), atomic force microscopy (AFM) and contact angle measurements (CAM). The quality and specific features of CHA thin films obtained by spin- and dip-coating methods were compared in this study. It was demonstrated that both methods are suitable for the fabrication of CHA films on the 316L stainless steel substrate, however, the preference to the spin-coating technique could be given.

: Keywords: biomaterials, ceramics, coatings, sol-gel growth

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2017 - Vol.28
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