In this Thesis, I have investigated multifunctional nanostructured Ti-Si-C thin films synthesized by magnetron sputtering in the substrate-temperature range from room temperature to 900 °C. The studies cover high-temperature growth of Ti3SiC2 and Ti4SiC3, low-temperature growth of Ti-Si-C nanocomposites, and Ti-Si-C-based multilayers, as well as their electrical, mechanical, and thermal-stabili...

Strength and toughness of A l 2 O 3 based ceramics were improved by d i spers ing ZrO,(Y,O,) and nonoxide mate r ia l s such a s Sic , Tic, TiN and B&. S ign i f ican t toughening and hardening were a t t a i n e d i n A1203-Zr0,-Sic and Al,O,-Zr0,-Tic composites.

In this research, the SiC-matrix composite with different amounts of TiC (0, 2.5, 5, 7.5, and 10 wt%) supplemented with additives including 4.3 wt% Al2O3 and 5.7 wt% Y2O3 were utilized to initiate the required liquid phase. The sintering process was performed using pressureless sintering at      1900 °C for 1.5 hours under argon atmosphere. The compos...

Micro-coiled fibers of carbon, Sic, Si N Tic, ZrC and Hf C were prepared by a metal-impurity activa?e%'chemical vapor deposition or vapour phase metallizing of the coiled carbon fibers. The growth conditions, morphology, growth mechanism and some properties were examined. The double-coiled carbon fibers were prepared using acetylene as a carbon source and various powders or plates of transition...

TiB2-SiC-C and TiB2-TiC-C heteromodulus ceramics were sintered by reactive hot pressing of TiC-B4C-Si TiC-B4C precursors at 1830 °C 30 MPa. Sintering time the maximum temperature was between 2 8 min. The reactions in green body create submicron (100–400 nm) TiB2 crystals inside silicon carbide grains as well BxSiyCz nanofibers, which nucleate near SiC surfaces. Low hardness graphite platelets a...

The synthesis of graphene via decomposition of SiC has opened a promising route for large-scale production of graphene. However, extremely high requirements for almost perfectly ordered crystal SiC and harsh process conditions such as high temperatures (>1200 °C) and ultra-high vacuum are two significant challenges hindering its wide use to synthesize graphene by decomposition of SiC. Here, we ...