FIGURE 5.
SEM images (SE mode) of the coated Al-Si9-Cu3 and Al-Si7-Mg0.3 samples before immersion: (a) Al-Si9-Cu3 coated with MMT, (b) Al-Si7-Mg0.3 coated with MMT, (c) Al-Si9-Cu3 coated with ZG, and (d) Al-Si7-Mg0.3 coated with ZG. Inset in (d) is made at the cross section. Magnification 5,000×, 15 kV.

SEM images (SE mode) of the coated Al-Si9-Cu3 and Al-Si7-Mg0.3 samples before immersion: (a) Al-Si9-Cu3 coated with MMT, (b) Al-Si7-Mg0.3 coated with MMT, (c) Al-Si9-Cu3 coated with ZG, and (d) Al-Si7-Mg0.3 coated with ZG. Inset in (d) is made at the cross section. Magnification 5,000×, 15 kV.

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