Preceramic nanohafniumoligocarbosilanes

Synthesis and magnetic properties of cobalt ferrite nanoparticles in polycarbosilane ceramic matrix

“…Ceramics-producing polycarbosilanes have a branched structure, can fiberize and provide high yield of ultrafine ceramics (crystallites 10-20 nm in size) upon pyrolysis in an inert medium or vacuum (60-65% wt.). SiC/SiC ceramics (consisting of a SiC matrix and SiC fibers) produced from PCS has the maximum sustained operating temperature of 1200 °С in an oxidizing environment, above which SiC crystallites start to grow leading to structural degradation of the ceramics accompanied by loss of strength [20]. Pyrolysis of PCS in an oxygen-containing medium, in turn, allows producing ceramics based on SiO 2 .…”