Figure 6.
SEM images of Ti-6Al-4V surface after a single acid etching at RT and at BT (500× magnification): (a) sandblasting; (b) H2SO4 for 10 min; (c) HCl for 10 min; (d) H2SO4 (120 °C) for 10 min; (e) HCl (80 °C) for 10 min; and (f) HF for 10 min.
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