Abstract
In this paper, Ni-P alloy coating was prepared by electroless nickel plating with alkaline plating-acid plating double solution system on aluminum alloy 6061 sheet. This paper mainly studies the changes of coating morphology after pretreatment in different alkaline plating baths and the properties of the electroless nickel plating after different time plating in the acidic chemical plating bath, analyze the experimental results, use scanning electron microscopy (SEM) to observe the surface morphology of the samples, and use EDS determine the coating composition, then obtained the growth pattern of the electroless nickel plating layer on aluminum alloy, test the properties of the coating, and the surface roughness, adhesion, microhardness and porosity of the coating were measured.
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