Ultrasonic dispersion mechanism of liquid Ga/In

Abstract Ga/In alloy, known for its low melting point and liquid state at room temperature, is a promising material for producing fine metal particles. Conventional methods often face challenges in efficiency or particle uniformity, particularly for particle sizes below 10 μ m. Ultrasonic processing offers a potential solution, enabling efficient production of microscale and sub-microscale particles. This study examined the effects of ultrasonic frequency and power on the particle size distribution of Ga/In alloy. The effect on particle refinement of adding a second ultrasonic irradiation step was also evaluated. High-speed video imaging was used to capture the dispersion process in real time. The results indicate that particle size depended strongly on ultrasonic frequency and power, with higher frequencies yielding finer particles. The secondary irradiation effectively improved size distribution and dispersion. These findings provide insights into the controlled formation of metal microparticles using ultrasonic techniques.