FLEXURAL PROPERTIES OF SELF-GRADED C/C COMPOSITE

Flexural properties and the fracture morphology of carbon/carbon composite with bioactive glass coating, which is self graded by the combining processes of pack cementation, plasma spread and sintering at high temperature, were tested. The results show that as received coating propagate tightly with the substrate C/C, some fibers are found in the bioactive glass, crack in the coating can propagate along the interface between the coating and fiber which shows that the bond between the coating and fiber is not strong; by statistic analysises, after C/C was treated with the coating, the strength and modular increase, but there is no significance difference in the flexibility of the samples.