Fig. 1: Microstructure of the thermal oxide film formed on pure Ti.
From: Degradation of thermal oxide film on pure titanium in an acidic environment containing fluoride
Surface morphologies (a, b, d, e, g, h), topographies (b', e', h'), and the cross-sectional morphologies (c, f, i) at 500 °C (a–c), 650 °C (d–f), and 800 °C (g–i) for 2 (a, d, g) and 24 h (b, c, e, f, h, i). The height ranges in b', h', and e' are −226 ~ 189 nm, −275 ~ 255 nm, and −399 ~ 499 nm, respectively.
