Figure 9

Surface morphologies (a), the high magnification image (b, c) and cross-sectional morphologies (d) of the pre-oxidized samples under a solid NaCl deposit layer in humid O2 for 1 h at 600 ˚C.

Surface morphologies (a), the high magnification image (b, c) and cross-sectional morphologies (d) of the pre-oxidized samples under a solid NaCl deposit layer in humid O2 for 1 h at 600 ˚C.