Abstract:
Different mass fractions of NbSe
2/Cu composite were made from NbSe
2 sheets by repressing and resintering process of powder metallurgy. Physical and tribological property and microstructure of NbSe
2/Cu composites were investigated. The results show that the friction coefficient and wear rate are greatly reduced by the addition of the NbSe
2 sheets. This is due to the enrichment of NbSe
2 in the surface of the composite and the forming of a solid lubricating film by the combined effect of frictional heat and extrusion. When the NbSe
2 sheets are coated with copper, the interfacial combination between NbSe
2 and Cu-matrix is improved and thus the composite will have better physical and tribological property.
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