Deposition behavior of bulk amorphous NiTiZrSiSn according to the kinetic and thermal energy levels in the kinetic spraying process

A kinetic spraying process that was essentially a solid-state deposition process was used for the formation of a fully amorphous coating. By using helium as the process gas and through the application of a preheating system for the powder carrier gas, it was possible to form a fully amorphous coating. The main process parameters evaluated in this study were the carrier/process gas species (N2 and He) and the preheating temperature [RT, 450 °C (below Tg) and 550 °C (liquid metallic region)]. Aside from an empirical approach, the in-flight particle velocity within the kinetic spraying process was measured. The amorphous phase fraction was calculated from differential scanning calorimetry (DSC) data. bulk amorphous feedstock material was used for coating, both the kinetic energy and the thermal energy of the in-flight particles were important. The kinetic energy affected the deposition of the bulk amorphous coating, while the thermal energy had more effect on the mechanical properties of the coating.