authors |
Yang, JJ; Blawert, C; Lamaka, SV; Yasakau, KA; Wang, L; Laipple, D; Schieda, M; Di, SC; Zheludkevich, ML |
nationality |
International |
journal |
CORROSION SCIENCE |
author keywords |
Pure magnesium; Iron impurity; Iron re-deposition; Corrosion inhibitor |
keywords |
AZ91D MAGNESIUM ALLOY; CHLORIDE-CONTAINING ELECTROLYTE; ENHANCED CATALYTIC-ACTIVITY; PROBE FORCE MICROSCOPY; HYDROGEN EVOLUTION; LOCALIZED CORROSION; ANODIC POLARIZATION; RE-DEPOSITION; ACIDIC MEDIA; SCHIFF-BASE |
abstract |
Three sodium salts of organic acids (2,5-pyridinedicarboxylic, 3-methylsalicylic and fumaric) were studied as corrosion inhibitors for pure magnesium containing a high level (342 ppm) of Fe impurity. The inhibition effect of the three inhibitors was evaluated by means of hydrogen evolution, electrochemical and surface analysis techniques. Significant reduction in corrosion rate was revealed for of the tested inhibitors in pH neutral NaCl electrolyte. 2,5-pyridinedicarboxylate and fumarate showed the effects characteristic for mixed-type inhibitors, while 3-methylsalicylate performed more as cathodic inhibitor, complying with the iron re-deposition model, where the electrochemical activity of iron-rich particles was effectively inhibited. |
publisher |
PERGAMON-ELSEVIER SCIENCE LTD |
issn |
0010-938X |
year published |
2018 |
volume |
142 |
beginning page |
222 |
ending page |
237 |
digital object identifier (doi) |
10.1016/j.corsci.2018.07.027 |
web of science category |
Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering |
subject category |
Materials Science; Metallurgy & Metallurgical Engineering |
unique article identifier |
WOS:000444933400021
|