Design and processing of high temperature CMCs oh Hs MTS+ 9 (a) o⊙@⊙ Qo回⊙ PyCsiC)m Time Figure 5. Apparatus for the fabrication of multilayered (PyC-SiC) ceramics at the laboratory scale (schematic): (a) experimental set-up: (b) pressure pulse for a homogeneous deposit; (e) pressure pulses for the deposition of the(PyC-SiC)elementary sequence, according to [331 3.2.4. Film boiling process (FBP). In FBP(CEA, Textron). the fiber preform is directly immersed in a boiling liquid precursor, such as cyclohexane for carbon, and heated to 1 100-1200 C by induction with a susceptor. The extremely high densification rates which have been reported result from the high deposition temperature and reactants/products mass transfers [76-78]. 4. CONCLUSION The material design of CMCs relies upon available ceramic fibers and supposes an optimization of both the fiber/matrix interfacial zone and the matrix itself. Some