CONTRAST AND ANALYSIS OF PROPERTIES OF CARBON/CARBON BRAKING DISCS FROM DIFFERENT PRODUCERS

This paper studied the microstructure, graphitization degree, heat transfer coefficient, hardness, compression strength, bending strength, interlayer shear strength, friction and wear properties of different specimens from different producers such as Dunlop, B.F.Goodrich, Missier, Bendix and state key laboratory for powder metallurgy of CSU. The results show that as a superior braking material, carbon/carbon composites must have reasonable felt and proportional rough laminar structure, high graphitization degree, high heat transfer coefficient in the vertical direction of the carbon fibers in the composites as well. The results also show that China has got the ability to produce carbon /carbon composites for braking materials compared with the other companies that are very outstanding in this field.