Preparation and properties of Ag-based electrical contact composites containing Ag coated NbSe2/Ti0.09Nb0.91Se2 particles

Abstract

Abstract This paper reports the preparation and the study of mechanical, electrical and tribological properties of Ag-based electrical contact composites containing silver coated transition metal selenide. It is found that the hardness and strength of Ag-based electrical contact composites containing the transition metal selenide are improved, and the resistivity and the contact resistance are reduced. It is also found that Ag and Cr have good interfacial bonding strength by X-ray diffract meter. Through scanning electron microscope, we can find that the silver coated transition metal selenide is evenly distributed in Ag matrix and it has good interface bonding with Ag. Furthermore, the tribological test results show that the tribological properties of Ag coated the transition metal selenide is slightly affected, but it still shows excellent lubricity.