Liquid Atomization by Supersonic Jet Observed with Laser Holography

Gas atomization has become one of the most efficient means of producing metal powders. In this method, the molten metal is atomized by supersonic freejets, and the powder with the diameter less than 30 μm is now being obtained. However, the detailed structure of the jet as well as the breakup process of the melted metal droplet is not known. In the present research, the diagnostic system based on the laser holography is constructed to clarify the process of gas atomization, and the breakup process of water droplet by supersonic jet is obtained.