Abstract：In this paper, a lot of experiments are carried out by using the high-performance sliding electric contact testing instrument, regarding the Cu impregnation carbon material and Cu-Sn wire as a friction pairs. A group of friction coefficient curves as turbulence are obtained, thereby two stages in the current-carrying friction process of sliding plates are proposed; they are running-in stage and relative stable stage. In connection with the problem of plate’s heavy abrasion loss at the running-in stage, some conclusions are derived, if increase the pressure properly and elevate the sliding velocity, it will shorten the total time of the running-in time , so as to reduce the wear of the first stage and improve the current quality. At last the author analyzed the worn surface of Cu impregnation carbon material at the first period and the relative stable period by using the SSX-550. And found that the macroscopic arc corrosion and the abrasive wear are the main styles of friction and wear at first stage, the microcosmic arc corrosion and the adhesive wear are the main styles at the relative stable period.
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2010, Vol. 25 
