Silicon Carbide (SiC) boasts impressive thermo-mechanical properties and exceptional resistance to high temperatures, making it a promising candidate for enhancing electric energy production efficiency. This research focuses on the sol-gel synthesis of silicon carbide (SiC) nanopowder for high-temperature environments, particularly solar receptors. The SiO2:Mg mixture, heated at 650°C for 6 hours, undergoes acid etching and subsequent washing to produce SiC. Characterization involves X-ray Powder Diffraction (XRD), Fourier-Transform Infrared Spectroscopy (FTIR), Scanning Electron Microscopy (SEM), and Transmission Electron Microscopy (TEM). XRD confirms SiC formation, with an estimated particle size of ~30 nm. Ultrasonic velocity measurements reveal a non-linear relationship with molar concentration, suggesting strong interactions. The ultrasonic velocity increases with nanoparticle concentration but decreases with temperature due to Brownian motion. Density increases with molar concentration, indicating close packing in the nanosuspension. The study emphasizes the role of aggregation in nanocolloids and its impact on ultrasonic velocity enhancement.
