Comparison of the Corrosion Performance of the As-Printed Surface of SLM 316L to Bulk Material and Wrought Counterpart

Résumé fourni par la source

Abstract The effect of laser power on the surface finish and corrosion resistance of as-printed selective laser melted 316L was studied. As-printed surface quality and corrosion response compared to wrought 316L and bulk printed material. The surface quality of the as-printed samples was measured through surface topography and high-resolution techniques. The corrosion resistance was measured using AC and DC electrochemical techniques. The as-printed samples displayed two breakdown stages during polarization. Transpassive behavior occurred at lower potentials, followed by a complete breakdown potential that was near the breakdown potential of the bulk SLM material. The polarization resistance measured from equivalent circuits was very similar to the values obtained for wrought and bulk SLM material.

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