The water atomisation technique has been used to produce rapidly solidified AlSi6 powders. We were interested how thickness and type of the oxide layers depend on the cooling rate and on the size range of particles. The microstructure after different cooling rate was observed. The thickness of the oxide layer was evaluated by Auger Electron Spectroscopy (AES). The type of the oxide was determined by X-Ray Diffraction method (XRD). Scanning Electron Microscopy (SEM) was used for the microstructure observation.
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