Abstract

The material design of ceramic matrix composites (CMCs) is discussed in terms of fiber nature and architecture, interphases (pyrocarbon, BN, multilayers), matrices and seal-coating, taking into account lifetime considerations. CMCs are processed by liquid or gas phase routes. Besides the well established processing routes, such as polymer impregnation and pyrolysis (PIP), slurry impregnation/hot pressing (SIHP) and isothermal/isobaric chemical vapor infiltration (I-CVI) techniques, emerging processes allowing densification times of the order of a day, are discussed.

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