Synthesis and Characterization of Novel NiW–CeO2 Composite Coating with Enhanced Corrosion and Wear Resistance

Abstract

Compact and uniform NiW composite coatings filled with ceramic particles such as CeO2 were electrodeposited on brass substrates using direct current (DC) and a well–designed pulse reverse current waveforms (PRC). PRC coatings exhibited the noblest corrosion potential and lowest current density compared to DC–electrodeposited coatings. Among all PRC coatings, PRC–NiW–CeO2 demonstrated the highest corrosion potential (−4.72 × 10−1 V) and the lowest current density (5.32 × 10−6 V). It also seems that the addition of CeO2 particles to the NiW matrix enhanced the wear resistance of the coatings, and the lowest wear volume of (133.10 × 103 µm3) and friction coefficient of 0.25 were obtained due to the formation of the uniform, void free and compact structures with a high content of CeO2 particles in the coating.

Special Issue: Environmental Corrosion of Metals and Its Prevention: An Overview and Introduction to the Special Issue

“…Thus far, numerous actions have been taken to mitigate the magnitude of corrosion reaching unsustainable costs, such as corrosion inhibitors [15], biocides [16], cathodic protection (CP) [17], and protective coatings [18]. In fact, 25% to 30% of annual corrosion costs would be saved if best practices for corrosion protection were employed.…”