Abstract
C/C-SiC composites were prepared by liquid silicon infiltration(LSI) process.The tribological properties were investigated using MMW-1A and MM-1000 test machine,respectively.Under experimental conditions,the rotation speed had limited impact on the tribological properties of C/C-SiC composites when the pressure was 0.48 MPa.The pressure had approximately the same effect on the wear rate when the rotation speed was 0.3 m/s.The wear mechanism was mainly abrasive grain wear.While under real brake conditions,the coefficient of friction(COF) of C/C-SiC composites reached 0.50 and the wear rate was up to 5.95 mg/times.The COF curves showed the typical saddle shapes brake curves.Abrasive grain wear mechanism and adhere wear mechanism appeared in the early and last stages in real brake conditions.
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