The
mesostructure at the cross section of
Fe-based alloy ribbon(Fe_(73.5)Cu_1Nb_3Si_(13.5)B_9) was observed with atomic force microscopy(AFM).It is found that there is an apparent
structural difference between the sticking roller face area(SRFA) and the free face area(FFA) of the ribbon
annealed at 310℃,and a structural conformity of the ribbon annealed at 540℃.In this paper,the free surface and the sticking roller surface of the
ribbons after
corrosion in HF solution at different corrosive depths were observed by AFM.The result shows that,for the specimen annealed at 310℃,there are some topographic differences between the two etched surfaces which are apparent at the early period and unapparent at the later period of corrosion,besides the topography of them is changing with the increase of corrosive depth.While for the specimen annealed at 540℃,there are no obvious structural change and differences.This result is consistent with the observation at the
Ribbon's cross section,and this structural difference is caused by the different residual stress remained in the ribbon annealed at different temperatures.