A novel microwave route for the preparation of ZrC–SiC composites

Microwave-assisted Synthesis of a ZrC-SiC Nanocomposite by Carbothermal Reduction and its Effect on Mean Particle Size

“…This experimental assembly for precise measurement of the reaction temperature of the carbothermal reduction of ZrC-SiC composites did not require the microwave irradiation to be interrupted, thus enabling data on the in situ reaction temperature to be recorded. This procedure differed from the one employed by Das et al 7 , who used a shielded Pt/Rh thermocouple in contact with the sample after interrupting the microwave irradiation. It is believed that the amorphous carbon reacts with the oxides and forms SiC and ZrC, according to Equation (5).…”

“…Increasing the reaction time resulted in negligible increases in the mean particle size due to melting and agglomeration of primary particles. Compared to a similar method 7 , this approach reduced the particle size of the ZrC-SiC powders from the micron to the nanometric scale.…”

“…In microwave heating, the interactions between the microwaves and the molecular structure of the materials result in fast heating, a marked decrease in the activation energies of the reaction, and an increase in the diffusion rates of the process 20 . In most cases, when microwave energy is applied to carbothermal reduction reactions, it represents a simpler and faster route than the conventional one, also considering the greater adsorption in the case of C-containing materials 7,[15][16][17][18][19][20][21][22] . In this work, an investigation was made into the synthesis of ZrCSiC nanocomposites by microwave-assisted carbothermal reduction and its effect on mean particle size.…”

Preparation and characterization of three-dimensional carbon fiber reinforced zirconium carbide composite by precursor infiltration and pyrolysis process

“…Zirconium carbide (ZrC) ceramic is a material of great interest for ultra high temperature use because of its high melting point (3400 8C), good chemical inertness, low evaporation, high hardness and good ablation resistance [3]. In particular, introduction of carbon fiber into ZrC matrix (C/ ZrC composite) will greatly improve fracture toughness and thermal shock resistance properties of bulk ZrC ceramics.…”

Elaboration of SiC, TiC, and ZrC Nanopowders by Laser Pyrolysis: From Nanoparticles to Ceramic Nanomaterials

“…high-temperature applications, such as rocket engines or as a diffusion barrier in the nuclear industry, in cutting tools, and in composites reinforcement [8]. Over the last decade, the field of nanostructured composites has provoked interest as a promising way to overcome the traditional drawbacks of traditional ceramics exhibiting low ductility and high brittleness.…”