Page 14 - Handbook of Adhesion Promoters
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2.1 Mechanical interlocking 7
Figure 2.1. Optical microscopic images (left) and the corresponding 3D surface profiles (right) of the aluminum
roughened with different sandpaper grit sizes: (A) as-received (R a = 0.6 μm), (B) grit 80 (R a = 3.75 μm), (C) grit
50 (R a = 5.63 μm), and (D) grit 36 (R a = 8.31 μm). [Adapted, by permission, from Mousa, S; Kim, G-Y, J. Mater.
Process Technol., 222, 84-90, 2015.]
