info:eu-repo/semantics/article
Characterization and frictional behavior of nanostructured Ni-W-MoS2 composite coatings
Fecha
2009-09Registro en:
Cardinal, María Fernanda; Castro, P. A.; Baxi, J.; Liang, H.; Williams, Federico José; Characterization and frictional behavior of nanostructured Ni-W-MoS2 composite coatings; Elsevier Science Sa; Surface and Coatings Technology; 204; 1-2; 9-2009; 85-90
0257-8972
CONICET Digital
CONICET
Autor
Cardinal, María Fernanda
Castro, P. A.
Baxi, J.
Liang, H.
Williams, Federico José
Resumen
Ni-W-MoS2 composite coatings were obtained by pulse plating from a Ni-W electrolyte containing suspended MoS2 particles. The coating composition, morphology, crystalline structure, microhardness and frictional behavior were studied as a function of MoS2 concentration. The results obtained in this study indicate that co-deposited lubricant particles strongly influenced the composite Ni-W coating properties. It was found that increasing co-deposited MoS2 diminished tungsten content in the coating and consequently increased the average grain size. Ni-W nanostructured coatings with high MoS2 content have a porous sponge-like structure, high surface roughness and irregular frictional behavior. However, the friction coefficient of Ni-W coatings is reduced to half its value with low MoS2 content.