626240.fig.006a
(a)
626240.fig.006b
(b)
Figure 6: SEM microstructures of Ni3Al/Ni3V two-phase intermetallic compounds: (a) type 1 and (b) type 2 after the immersion times of 24 hours and 96 hours in 0.5 kmol/m3 H2SO4 solution at 303 K.