Crystallization of Al-based Amorphous Alloys in Good Conductivity Solution |
Fig. 5 Optical pictures and SEM images of immersed Al94-xNixGd6 x = 6 and 10 glassy ribbons in 27 wt% HNO3 methanol solution for 120 h. The cooling rates for the samples in left and right columns are 29.3 and 25.6 ms, respectively. In optical picture with Rc of 29.3 ms, ribbon 1, as-spun sample with x of 6; ribbon 2, immersed sample with x of 6; ribbon 3, as-spun sample with x of 10; and ribbon 4, immersed sample with x of 10. In optical picture with Rc of 25.6 ms, ribbon 5, as-spun sample with x = 6; ribbon 6, immersed sample with x of 6; ribbon 7, as-spun sample with x of 10; and ribbon 8, immersed sample with x of 10. c and d SEM images of immersed samples with x of 6, e and f SEM images of samples with x of 10. Film denotes the film matrix, fragment denotes the heavy corrosion region. |
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