Ag-based Electrical Contact Material Reinforced by Ti₃AlC₂ Ceramic and Its Derivative Ti₃C₂T_x

Ag-based electrical contact plays a key role in low-voltage switches, which is intended to substitute the traditional and toxical "universal" contact of Ag/CdO. As a new kind of two-dimensional carbide material with good electrical conductivity and thermal conductivity, Ti 3 C 2 T x , a representative of MXenes has showed exceptional potential in various fields, including being the reinforcement phase in electrical contact materials to substitute for the toxic CdO. In this work, we successfully prepared Ag/Ti 3 C 2 T x composite by powder metallurgy. Phase and microstructure of the Ti 3 C 2 T x and Ti 3 AlC 2 were characterized, and their properties, such as electrical resistivity, microhardness, machinability, tensile strength, and anti-arc erosion performance were investigated and compared.