Meaning
High velocity gas streams operate above the speed of sound to supply the kinetic energy necessary for liquid metal atomization. These supersonic gas jets generate shear forces that tear the melt stream into micro droplets during powder production. This high energy process is necessary to produce the fine powder sizes required for high performance battery electrodes.
Sourcing contracts specify nozzle designs that maintain these velocities over long production runs.
Velocity Profile
Gas expands through a convergent divergent nozzle to achieve velocities beyond the speed of sound. This expansion generates a series of shock waves that interact with the liquid metal.
Metal Atomization
The high kinetic energy of the gas overcomes the surface tension of the melt, which causes rapid ligament formation. This mechanism yields a high percentage of fine particles.
Operation Protocol
Precise regulation of the gas supply pressure is required to maintain the supersonic flow without generating destructive vibrations. These vibrations can cause nozzle damage.
