Journal Article

PUBDB-2020-02249

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Use of synergistic mixture of chelating agents for in situ LDH growth on the surface of PEO-treated AZ91

Petrova, E. (Corresponding author) ; Serdechnova, M. (Corresponding author)Extern* ; Shulha, T.Extern* ; Lamaka, S. V.Extern* ; Wieland, D. C. F.HZG* ; Karlova, P.Extern*HZG* ; Blawert, C.Extern* ; Starykevich, M. ; Zheludkevich, M. L.

2020
Macmillan Publishers Limited, part of Springer Nature [London]

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Please use a persistent id in citations: doi:10.1038/s41598-020-65396-0  doi:10.3204/PUBDB-2020-02249

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.

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Contributing Institute(s):

1. DOOR-User (DOOR ; HAS-User)

Research Program(s):

1. 6G3 - PETRA III (POF3-622) (POF3-622)
2. FS-Proposal: I-20190157 (I-20190157) (I-20190157)

Experiment(s):

1. PETRA Beamline P03 (PETRA III)

Appears in the scientific report 2020

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