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| The stability of friction with or without current-carrying and its effect on current-carrying wear of highly pure bulk Ti3AlC2 against low carbon steel has been investigated. Experiments are performed on a block-on-disk type friction tester with sliding speeds from 20-60 m/s, pressures from 0.4-0.8 MPa and electric current of 0 A and 100 A. The results show that the stability of friction and wear rate of Ti3AlC2 was only slightly affected by the changes of sliding speed and normal pressure in the conditions that without current. However, it causes a significant impact in the current-carrying conditions. The stability of friction decreases with increasing sliding speed or decreasing normal pressure, higher stability corresponds to lower wear rate during current-carrying friction process. Standard deviations of kinetic friction coefficients, as a characterization of stability, show strong linear correlation with the wear rate. However, when the sliding speeds are higher than 50 m/s or the normal pressures are less than 0.5 MPa, the current-carring wear rate of Ti3AlC2 increases rapidly. |
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| Keywords:Friction stability; Ti3AlC2; Current-carrying friction; wear rate |
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