Biomedical Engineering Reference
In-Depth Information
Figure 9.67
The counted number of adhered cells as a function of
incubation period on the surface of Ti and anatase TiO
2
nanotubes [66].
Narayanan
et al
. [60] deposited nano-grained calcium phosphate
coatings on titanium alloy substrates using aqueous electrolyte
consisting 0.042M Ca(NO
3
)
2
+ 0.025M (NH
4
)
2
HPO
4
with pH of 4.1.
This solution has a molar Ca/P ratio of 1.67. Calcium phosphate
coatings with grain size in the range of 50-100 nm were produced
on the surface of Ti-6Al-4V alloy (Fig. 9.68).
Figure 9.68
SEM images of HA deposited using (a) ultrasonic agitation
at 20 mA/cm
2
for 30 min, (b) without ultrasonic agitation
50 mA/cm
2
for 30 min, (c) ultrasonic agitation 50 mA/cm
2
for 30 min [60].
