Influence of precursor morphology on the microstructure of silicon carbide nanopowder produced by combustion syntheses

Combustion Synthesis of Silicon Carbide

“…However, the thermodynamics cannot suggest how one may control the microstructure of the product synthesized in the SHS. The last issue was recently investigated by Ermekova et al, 2010. Three different types of the silicon oxide (SiO 2 ) powder were used: (i) from Yerken-deposit, Kazakhstan, (KZ) 98,8% purity, particle size d≤100m, (ii) Laboratory Cerac (LC), WI, USA, 99.5% purity, d<10 μm (iii) nano Untreated Fumed Silica (UFS), Cabot Corporation, MA, USA, 99.9% purity. The typical microstructures of these powders are shown in Figure 20.…”

Spark plasma sintering of SiC powders produced by different combustion synthesis routes

“…It was also proved that the amount of gaseous products (which includes Mg, CO and SiO) can be significantly decreased by an increase of inert gas pressure in the reaction chamber, since higher P suppresses the metal-gasification processes. 7 A number of publications are dedicated specifically to sintering of SiC micron-and nano-sized powders, and are the subject of a recent review. 8 In this work special attention has been paid to produce SiC powders using four different combustion routes, all of which allow scaled-up production of such nanopowders at much lower costs.…”

Synthesis of graphene-like carbon from agricultural side stream with magnesiothermic reduction coupled with atmospheric pressure induction annealing

“…Nanostructured silicon carbide (nSiC) can be produced through several synthetic routes such as CVD, solgel process, thermal or laser ablation from organic compounds but also derived from biomass [17,18]. However, current techniques often require expensive precursors, and toxic reactants that result in highly agglomerated nSiC particles [17,19]. Magnesiothermic reduction (MTR) is an alternative method to produce nSiC according to the following pathway: [17].…”

“…Magnesiothermic reduction (MTR) is an alternative method to produce nSiC according to the following pathway: [17]. It enables the production of nanostructured SiC with high purity, uniform size and morphology, while, strong agglomeration of the SiC particles can be prevented [17,[19][20][21]. Furthermore, MTR can be considered a sustainable approach to synthesize nSiC due to its low energy consumption, short reaction time and low temperature compared to the carbothermal reduction process known as the Acheson process [18,22].…”