Abstract
In this paper, the effects of temperature, pH, substrate materials, cationic surfactant concentration and PTFE concentration in the plating solution on the deposition rate and the compositions of electroless Ni–Cu–P–PTFE coatings were investigated. The coating thickness and compositions were measured using a digital micrometer and an energy dispersive X-ray spectroscopy (EDX) respectively. Scanning electron microscope (SEM) indicated that PTFE particles were uniformly distributed throughout the Ni–Cu–P matrix. The anticorrosion properties of the Ni–Cu-P-PTFE composite coatings in HCl and NaCl solutions were studied. The results showed that the corrosion resistance of the Ni–Cu–P–PTFE composite coatings was superior to that of Ni–P–PTFE composite coating or copper.
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