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ARTÍCULO
TITULO

Effect of hBN on Corrosion and Wear Performances of DC Electrodeposited NiW and NiW?SiC on Brass Substrates

Mina Dadvand and Oumarou Savadogo    

Resumen

Crack-free and uniform nickel?tungsten (NiW) coatings and their composite coatings filled with ceramic particles such as silicon carbide (SiC) and hexagonal-boron nitride (hBN) were deposited on brass substrates by applying direct current (DC) waveforms. Among all coatings, NiW?SiC?hBN coatings displayed the noblest corrosion potential (-0.49 V) and lowest current density (4.36 × 10-6 A·cm-2). It also seems that addition of hBN and SiC ceramic particles to NiW matrix remarkably improved the wear performance of the NiW coatings. However, NiW?hBN exhibited the lowest wear volume (48.84 × 103 µm3) and the friction coefficient of 0.1 due to ultra?low friction coefficient of hBN particles.

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