Compressed air was used
as an atomizing gas. The melting behavior and particle
formation process were recorded by a 12-bit high-speed
camera (HSC) (type HSFC PRO, PCO, Germany). This
camera is made up of four recording modules and can
record 333 mfps (million frames per second). The exposure
time was set to 100 ns and the delay time to 500 ns. In
studying the melting behavior in the TWAS process,
images were illustrated from the cathode side as well as