The CFC requires further graphitization treatment after the densification process.

The graphitization process of CFC is the process of transforming thermodynamically non-stable carbon materials into steady-state graphite at high temperatures (1800~2800℃).

In the process of graphitization, due to the difference in the thermal expansion of the fiber and the matrix in the CFC, the interface between the fiber and the matrix is prone to produce thermal stress and mechanical stress. Driven by the action of stress, the orderly carbon arrangement of the matrix increases, and the degree of graphitization of each component in the material is increased than in its presence alone.

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