Abstract: After treatment by immersion in Furan Resin, carbonization, chemical vaporized infiltration, machining and heat, 3D carbon fiber stereo fabrics were manufactured into carbon/carbon composites. By means of the scanning electron microscope and the Shore sclerometer, the microstructure and the Shore hardness of the materials were analyzed. In order to detect the feasibility of the carbon/carbon composites when used as bone substitutes, the implantations in animals' bone were carried out. The biocompatibility was studied by means of Xray and histological observation. The results reveal that this material has a homogeneous structure. Its biocompatibility with bone tissue is fine. It has a hardness similar to normal human bone.

Key words: preparation, biocompatibility, bone tissue , carbon/carbon composites