“…They can be regarded as consisting of stacked bi-layers. The availability of volatile/liquid silanes led to the preparation of SiC materials in various forms (McDiarmid, 1961;Fritz et al, 1965;Gough & Kern, 1967;Learn & Khan, 1970;Corriu & Lanneau, 1970;Kumar & Litt, 1988;Schmidt et al, 1991): films/coatings (Rynders et al, 1991), fibres (a SiC coating is deposited on a carbon fibre core (Hurwitz et al, 1991;Tanaka et al, 1995;idem, 1996;Popovska et al, 1997), monoliths and fibre-reinforced composites (Yajima et al, 1980;Tanaka & Kurachi, 1988;Bouillon et al, 1991 a & b;Monthioux et al, 1990;idem, 1991;Delplancke et al, 1991;Lee & Yano, 2004). The growth rate was slow and for the preparation of thick monoliths or composites weeks are required with sometimes an intermediate machining of the parts in order to avoid the closure of the porosity that occurs at the sample surface, avoiding the completion of the core densification.…”