Abstract
In order to improve 6063A aluminium surface condition, electroless plating technology was used to obtain Ni-P coating on 6063A aluminium surface, the properties of Ni-P coating were investigated by means of scanning electron microscopy (SEM), X-ray diffractometer, microhardness teste, coating adhesion nick meter and electrochemical workstations. The result indicate that, the Ni-P coating shows a amorphous structure with compact structure, the hardness is about 4 times of substrate; the combination of the coating and the substrate is good, the strength for 42.25 N; after electroless plating, self-corrosion potential shift for positive direction for 0.55 V, the self-corrosion current density lower two orders of magnitude compare to the substrate, polarization resistance significantly increased, which shows that after electroless Ni-P plating, the corrosion resistance increase apparently.
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