Meaning
Atomization process parameters dictate the kinetic energy transferred from pressurized gas jets to molten metal streams during powder production. The gas to metal mass ratio measures the mass flow rate of inert gas divided by the mass flow rate of liquid metal fed into the atomization nozzle. Higher numerical values yield finer median particle sizes and narrower particle size distributions required for advanced electrode coatings or thermal spray applications.
The domain of this metric stops outside gas atomization, where water atomization or mechanical milling replaces pneumatic disintegration.
Particle Disintegration
Kinetic energy transfer during liquid stream break-up determines the final particle morphology. Raising the gas to metal mass ratio increases total droplet shear, reducing mean particle diameters down to target micrometre ranges. Excessive gas flow creates satellite particles that impair powder flowability.
Energy Density
Operating costs escalate as high-pressure gas requirements rise relative to liquid metal throughput. A high gas to metal mass ratio demands elevated compressor power and larger storage capacity for inert gas media.
Nozzle Geometry
Fluid dynamic calculations align liquid metal orifice diameters with surrounding gas annulus dimensions to stabilize the atomization zone. Maintaining a fixed gas to metal mass ratio prevents nozzle clogging and pressure oscillations during continuous pouring operations.
