Research Article

Effects of Hard Surface Grinding and Activation on Electroless-Nickel Plating on Cast Aluminium Alloy Substrates

Figure 7

Micrographs showing EN deposition on (a) NaOH etched as-cast Al alloy surface and (b) HCl etched 1200 μm polished cast Al substrates at 10 minutes plating time.
841619.fig.007a
(a) Metallic, bright EN deposition
841619.fig.007b
(b) Mixed, bright and dull EN deposition