authors |
Petrova, E; Serdechnova, M; Shulha, T; Lamaka, SV; Wieland, DCF; Karlova, P; Blawert, C; Starykevich, M; Zheludkevich, ML |
nationality |
International |
journal |
SCIENTIFIC REPORTS |
keywords |
PLASMA ELECTROLYTIC OXIDATION; LAYERED DOUBLE HYDROXIDE; HYDROTALCITE CONVERSION FILM; ACTIVE CORROSION PROTECTION; AZ31 MAGNESIUM ALLOY; MICRO-ARC OXIDATION; COATINGS; RESISTANCE; ALUMINUM; MICROSTRUCTURE |
abstract |
The principal possibility to grow layered double hydroxide (LDH) at ambient pressure on plasma electrolytic oxidation (PEO) treated magnesium alloy AZ91 in the presence of chelating agents is demonstrated for the first time. It avoids hydrothermal autoclave conditions, which strongly limit wide industrial application of such coating systems, and the presence of carbonate ions in the electrolyte, which lead to the formation of passive non-functionalizable LDH. A combination of chelating agents (sodium diethylenetriamine-pentaacetate (DTPA) and salicylate) were introduced to the treatment solution. The role of each additive and the influence of treatment bath composition on the LDH formation processes are discussed. A synergistic effect of DTPA and salicylate during LDH formation is discovered and its possible explanation is proposed. |
publisher |
NATURE PUBLISHING GROUP |
issn |
2045-2322 |
year published |
2020 |
volume |
10 |
issue |
1 |
digital object identifier (doi) |
10.1038/s41598-020-65396-0 |
web of science category |
Multidisciplinary Sciences |
subject category |
Science & Technology - Other Topics |
unique article identifier |
WOS:000540471500001
|