Corrosion Inhibition of AZ31-xLi (x = 4, 8, 12) Magnesium Alloys in Sodium Chloride Solutions by Aqueous Molybdate

Published: March 22, 2024

In this work, corrosion inhibition of lithium-containing AZ31 magnesium alloys AZ31-xLi (x = 4, 8, and 12 wt.%) has been examined in 0.05 M NaCl solution with without 10–150 mM sodium molybdate as the inhibitor. X-ray diffraction, scanning electron microscopy (SEM), energy dispersive spectroscopy analyses have used to investigate phase composition microstructure alloys. The effectiveness inhibitor evaluated by a set electrochemical methods, including potentiodynamic polarization, impedance (EIS), dynamic (DEIS). Instantaneous DEIS measurements allowed evaluate profile molybdate, giving high efficiency (>85%) at concentrations higher than ca. 35 mM. Post-corrosion SEM, Raman, photoelectron confirmed morphology, ionic valence formed passive layers on surface Based experimental observations, two-stage mechanism molybdate-containing solutions proposed.

Language: Английский

Corrosion inhibition potential of sulfur-containing and aromatic amino acids on magnesium in Hank's solution

Colloids and Surfaces A Physicochemical and Engineering Aspects, Journal Year: 2024, Volume and Issue: 703, P. 135267 - 135267

Published: Sept. 4, 2024

Language: Английский