The replacement of chrome coatings for materials that maintain the same properties has become the Co-W alloy relevant. In this context, we proposed to evaluate the effects of the Co and W concentration in the electrolytic bath on the faradaic efficiency, morphology, and anticorrosive property of the...

The replacement of chrome coatings for materials that maintain the same properties has become the Co-W alloy relevant. In this context, we proposed to evaluate the effects of the Co and W concentration in the electrolytic bath on the faradaic efficiency, morphology, and anticorrosive property of the Co-W alloy. The diffractograms indicated a tendency to amorphization when the W concentration increased from 0.1 to 0.3 M, and the faradaic efficiency achieved values close to 70%. Alloy surfaces demonstrated a homogeneous composition according to the energy-dispersive X-ray mapping. The increase of Co and W concentration promoted the formation of rounded structures and reduced the space between the microcracks. Moreover, the high concentration of these promoted greater corrosion resistance with a corrosion current density of 1.83 µA cm−2

COORDENAÇÃO DE APERFEIÇOAMENTO DE PESSOAL DE NÍVEL SUPERIOR - CAPES

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