Corrosion Behavior of Engineering Materials in Flow Field

Abstract:

In this study, the effect of fluid flow rate, surface roughness and strain level on the corrosion behavior of magnesium alloy AZ31 was characterized in a custom test bench. Specimens were prepared by mechanical polishing and subject to flow in a simulated body fluid at 37°C for 24 hrs. Compared to a specimen pre-strain of 0%, mass loss was shown to increase by approximately 6% with a specimen pre-strain of 10%. Similarly, mass loss increased by approximately 13% when the fluid flow rate was increased from 250ml/min to 500ml/min. Surface roughness had a significant influence on corrosion behavior. Compared to a specimen polished with a 1 µm diamond paste, the mass loss for a specimen polished with #600 sandpaper was 28% greater.

• Periodical: Advanced Materials Research (Volume 922)
• Pages: 722-727
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.922.722
• Online since: May 2014
• Authors: Yuki Soya*, Shoichiro Yoshihara, Yuki Ohmura, Bryan J. Mac Donald, Emmet Galvin
• Keywords: AZ31 Magnesium Alloy, Bioabsorbable Materials, Corrosion Behavior, Flow Field, Simulated Body Fluid

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