Ultra-low temperature synthesis of Al4SiC4 powder using spark plasma sintering

Fast synthesis of B4C–TiB2 composite powders by pulsed electric current heating TiC–B mixture

“…Recent reports showed that the synthesis of ceramic powders in PECS furnace with specially designed die/punch/sample set-up required lower temperature and shorter time than traditional method, and the obtain powders had smaller particle size. [14][15][16] In this paper, B 4 C-TiB 2 composite powders were prepared using pulsed electric current heating (PECH) in PECS furnace using TiC and amorphous B as raw materials according to reaction (2) with x = 1.0. The effects of temperature, dwelling time on the phase composition, particle size and morphology were investigated.…”

Synthesis of Al4SiC4 powders via carbothermic reduction: Reaction and grain growth mechanisms

“…Therefore, another possible reaction route for the formation of Al 4 SiC 4 during the carbothermic reduction can be subjected to following gas-gas reactions (Eqs. (12) and (13) 2Al O(g)+SiO(g)+11CO(g)=Al SiC (s)+7CO (g) (13) Hence, based on the thermodynamic calculation in the Al-Si-O-C system, the formation of Al 4 SiC 4 during the carbothermic reduction process was not confined to the solid-solid reaction but also from the gas-solid reactions and gas-gas reactions where some Al and Si containing intermediate gases such as Al(g), Al 2 O(g), and SiO(g) were involved in the reaction process.…”

“…Hence, most of reported research work focused on the synthesis of this ternary ceramic. There are mainly three kinds of powder mixtures used to synthesize the Al 4 SiC 4 powders or bulk, i.e., (1) using aluminum, silicon, and carbon powders as raw materials [11][12][13], (2) using Al 4 C 3 and SiC powders as raw materials [14,15], and (3) using Al 2 O 3 , SiO 2 , and C as raw materials by carbothermic reduction [16][17][18][19][20]. The former two reactant mixtures require expensive and active metal powders or carbides as starting materials.…”

Combustion synthesis of single‐phase Al4SiC4 powder with assistance of induction heating

“…Yamamoto obtained Al 4 SiC 4 from mixture of Al, Si, C and triethanolamine by heating the mixture at 1200°C for 6 hours. Recently, it was shown that the spark plasma sintering process can reduce the temperature and shorten the time of synthesis, however, special molds and precautions are required to prevent separation of liquid Al from the reaction mixture before the reaction takes place . In spite of very attractive properties of Al 4 SiC 4 , its application is still restricted by the difficulty to fabricate single phase.…”