Research progress on the interfacial phases of ceramic matrix composites

Continuous fiber toughened ceramic matrix composites (CMCs) have a wide range of applications in fields of aerospace vehicles and nuclear power plants because of their excellent properties. As one of the basic components of CMCs, the interfacial phase plays a great role in the performance of CMCs. By adjusting the interfacial phase, the toughening mechanisms such as fiber pull-out and debonding of CMCs can be brought into full play. The paper introduced the design principles of interfacial engineering of CMCs. The methods of interfacial preparation and interfacial strength testing of CMCs were summarized, and then the advantages and disadvantages of each methods were analyzes. The recent status of interface phase of CMCs was also reviewed. Finally, the development direction of interface phase of CMCs was prospected.