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For the combinations of five kinds of metallic pin and five kinds of ceramic disk (Al 2 O 3 , ZrO 2 , SiC, Si 3 N 4 , TiC), a friction and wear test was carried out under unlubricated condition in a vacuum, at a sliding speed of 0.136-0.226 m/s, and under a constant load of 5.0 N. A topographical analysis was also performed on the micro-asperities of the wear...
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