Hydroxyapatite Coating Influenced by Ti6Al4V Substrate Roughness
In this paper the author’s main goal was to determine if the roughness of the substrate (a Ti6Al4V alloy) shows any influence on the hydroxyapatite (HA) crystal morphology and distribution. Disks of Ti6Al4V, 24mm in diameter and 1mm thickness are sandblasted with Al2O3 particles with different mean size: 29, 45 and 110μm. The disks are analyzed prior coating by atomic force microscopy (AFM) to determine the surface roughness. The samples are then cleaned and coated with HA by immersion in a solution derived from [Ca (NO3)2.4H2O] and P2O5 dissolved in ethylene glycol – the process was repeated 3 times. The coated samples are analyzed by scanning electron microscopy (SEM) to observe HA crystal shape, size and distribution.
Antoniac Iulian, Albu Madalina, Sinescu Cosmin and Miculescu Marian
F. Constantinescu et al., "Hydroxyapatite Coating Influenced by Ti6Al4V Substrate Roughness", Key Engineering Materials, Vol. 638, pp. 62-66, 2015