Influence of particle size on surface oxide of 316L stainless steel powders for hot isostatic pressing

The powder oxide state is essential for resilient metallurgy components using Hot Isostatic Pressing (HIP) process. In fact, it can affect the behaviour of during different additive manufacturing processes. However, layer properties as a function particle size are not well known yet. This work summaries detailed surface characterization 316L particles’ gas atomization to permit better understanding and control X-ray photo-electron spectroscopy (XPS), Raman spectroscopy, Transmission Electron Microscopy (TEM) Scanning (STEM) were combined characterize condition powders. results show an evolution thickness in particle’s size. appears like amorphous micro-structure. An its composition be observed through oxide. main iron (FeO Fe3O4 types), chromium (Cr2O3 type) manganese (Mn2O3 type). addition, nanometric nodules (MnO on by TEM Microscope (SEM). These variations explain difference between small large particles.