As shown in Fig. 3.15, the carbon f

As shown in Fig. 3.15, the carbon fiber was subjected to tensile stress parallel to its axial direction. However, because the interface between the carbon fiber and zirconia matrix was relatively firm, the carbon fiber was not pulled out, but was pulled off, and the tensile fracture trace at the tip of the carbon fiber was obvious, which indicated that the tensile stress of the carbon fiber was less than the interfacial bonding force between the carbon fiber and zirconia matrix, But it is greater than the tensile strength of carbon fiber itself. When the carbon fiber is subjected to parallel tensile stress, there are also stresses at other angles with the axial direction of the carbon fiber, which will lead to the stress between the carbon fiber and zirconia matrix can not maintain a strict parallel relationship, and dissociation occurs, resulting in the interfacial bonding force between the two is less than the tensile stress of the fiber, so the fiber is pulled out, leaving the corresponding holes.