In situ grown SiC-SiOx nanocomposite based on
pyrolytic transformation of Ni-doped silicon
filler loaded poly (methylphenylsilsesquioxane)
M. Scheffler, E. Pippel, J. Woltersdorf, P. Greil,
Mat. Chem. Phys. 80, 565 (2003)
Forschung » Nanocomposite
The formation of precursor-derived nano-ensembles and their
direct incorporation in a matrix are the subject of this topic.
The resulting systems offer the generation of compositional
gradient microstructures and tailored mechanical and electrical
Such composites may form a novel group of molecularly designed
functional materials based on the integration of, e.g., individual
nanowires and nanotubes into addressable structures. The main tasks
are to determine the optimum thermodynamic and kinetic conditions
for the related microprocesses and to evaluate the mechanical and
electrical properties of the resulting composite materials.
The main emphasis of current research is on the growth of specific
nanowires, nanotubes and nanorods with precisely defined ordering
structure and morphology. In addition, multiwall nanotube wires
offer a great potential for a new class of microcomposite materials
with significantly increased toughness compared to brittle matrix materials.
Recently, work was performed to transfer the superior mechanical properties
of nanotubes into ceramic matrices by dispersion in the green body and
subsequent sintering or by in situ formation during firing in a
carbon-containing methane atmosphere.