Crystal growth of SiC whisker from the SiO(g)-CO system

Reduction of SiO2 to SiC Using Natural Gas

“…They suggested that SiC formation in their reactor follows reaction 7. Saito et al [14] in their work on crystal growth of SiC whiskers from SiO-CO system produced needle like SiC according to eq. 8:…”

Preparation of SiC nanowires-filled cellular SiCO ceramics from polymeric precursor

“…The main explanations for the growth of the SiC nanowires are the vapor-liquid-solid (VLS) and vaporsolid (VS) mechanisms [36]. In this study, no droplets were found on the tips of the nanowires.…”

Whiskers

“…At present, however, the most commonly applied methods of production are the carbothermal reduction of silica [36] and the vapor -liquid -solid (VLS) process [37], [38].…”

“…The overall carbothermal reaction is written as [39]: Below 1400 C most of the SiC is produced by reaction (1). At higher temperatures, however, the solid-state reaction is replaced by the gassolid reactions: Other possible reactions for SiC whisker formation are [36], [40]: The most economic and widely used production method based on carbothermal reduction of silica is the pyrolysis of silica and carbon obtained from rice hulls [41][42][43][44][45]. The Silar SC-9 whiskers (Table 1) are manufactured in this way.…”

“…The CO gas was added in order to control the rate of production of SiO(g) from Reaction (1). SiC whiskers grew by the following reaction It has been proposed that Reaction (3) may also take place, leading to SiC whisker formation [36].…”