Abstract
In a parallel magnetic field, a superhydrophobic nickel coating was prepared by jet electrodeposition on a copper substrate. Magnetic nickel particles were added to the plating solution, and the nickel coatings deposited under the parallel magnetic field had a hierarchical structure. The pristine coating was superhydrophilic, but after 10 days, it spontaneously changed to being superhydrophobic, with a water contact angle of up to 152.2° and a rolling angle of 6°. XPS analysis showed that the reduction in surface free energy was due to the oxidation of nickel and the attached hydrocarbons. Meanwhile, the superhydrophobic coating illustrated excellent corrosion resistance in 3.5 wt% NaCl solution and a low friction coefficient versus the Si3N4 ball.
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