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Low Surface Roughness Additively Manufactured AlSi10Mg: The Impacts on Corrosion and Water Repellency Properties

  • P. Fathi
  • M. Mohammadi
  • A. M. NasiriEmail author
Conference paper
  • 553 Downloads
Part of the The Minerals, Metals & Materials Series book series (MMMS)

Abstract

One of the main challenges associated with the additive manufacturing of metallic components and in particular aluminum alloys is the high surface roughness of the parts obtained in as-printed condition, which can detrimentally affect their corrosion behavior and fatigue performance. The present study aims to improve the surface roughness of as-printed AlSi10Mg parts produced by direct metal laser sintering (DMLS) through modifying the DMLS process parameters. The electrochemical properties and corrosion resistance of the obtained surfaces were investigated by performing anodic potentiodynamic polarization and electrochemical impedance spectroscopy, and the wettability of the fabricated surfaces was evaluated by measuring the static and dynamic contact angles on each surface. A comprehensive microstructural analysis of each sample was also conducted using optical microscopy, scanning electron microscopy, and scanning Kelvin probe force microscopy to reveal the correlation of the used DMLS process parameters and the obtained surface properties.

Keywords

Additive manufacturing DMLS AlSi10Mg Surface roughness Hydrophobicity Corrosion Microstructure 

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Copyright information

© The Minerals, Metals & Materials Society 2020

Authors and Affiliations

  1. 1.Faculty of Engineering and Applied ScienceMemorial University of NewfoundlandSt. John’sCanada
  2. 2.Marine Additive Manufacturing Centre of Excellence (MAMCE)University of New BrunswickFrederictonCanada

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