Granularity reconstruction and characterization of silicon carbide micronized powders

Synthesis of nanophase silicon, carbon, and silicon carbide powders using a plasma expansion process

Nanophase powders of Si, C, and SiC with narrow size distributions are synthesized by dissociating reactants in a dc arc plasma and quenching the hot gases in a subsonic nozzle expansion. The plasma is characterized by calorimetric energy balances and the powders by on-line aerosol measurement techniques and conventional materials analysis. The measured nozzle quench rate is about 5 X 106 K/s. ...

Electrical Characterization of Microelectromechanical Silicon Carbide Resonators

This manuscript describes the findings of a study to investigate the performance of SiC MEMS resonators with respect to resonant frequency and quality factor under a variety of testing conditions, including various ambient pressures, AC drive voltages, bias potentials and temperatures. The sample set included both single-crystal and polycrystalline 3C-SiC lateral resonators. The experimental re...

Silicon Carbide Power Device Characterization for HEVs

The emergence of silicon carbide(SiC-) based power semiconductor switches, with their superior features compared with silicon(Si-) based switches, has resulted in substantial improvement in the performance of power electronics converter systems. These systems with SiC power devices have the qualities of being more compact, lighter, and more efficient; thus, they are ideal for high-voltage power...

Synthesis and characterization of silicon carbide, silicon oxynitride and silicon nitride nanowires

Several methods have been employed to synthesize SiC nanowires. The methods include heating silica gel or fumed silica with activated carbon in a reducing atmosphere, the carbon particles being produced in situ in one of the methods. The simplest method to obtain b-SiC nanowires involves heating silica gel with activated carbon at 1360 uC in H2 or NH3. The same reaction, if carried out in the p...

Silicon Nitride and Silicon Carbide