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Please use this identifier to cite or link to this item: https://elib.bsu.by/handle/123456789/259249
Title: Chelating agent-assisted in situ LDH growth on the surface of magnesium alloy
Authors: Shulha, T.N.
Serdechnova, M.
Lamaka, S.V.
Wieland, D.C.F.
Lapko, K.N.
Zheludkevich, M.L.
Keywords: ЭБ БГУ::ЕСТЕСТВЕННЫЕ И ТОЧНЫЕ НАУКИ::Химия
ЭБ БГУ::ТЕХНИЧЕСКИЕ И ПРИКЛАДНЫЕ НАУКИ. ОТРАСЛИ ЭКОНОМИКИ::Электроника. Радиотехника
ЭБ БГУ::ТЕХНИЧЕСКИЕ И ПРИКЛАДНЫЕ НАУКИ. ОТРАСЛИ ЭКОНОМИКИ::Машиностроение
Issue Date: 2018
Publisher: Nature Publishing Group
Citation: Sci Rep 2018;8(1)
Abstract: In situ formation of layered double hydroxides (LDH) on metallic surfaces has recently been considered a promising approach for protective conversion surface treatments for Al and Mg alloys. In the case of Mg-based substrates, the formation of LDH on the metal surface is normally performed in autoclave at high temperature (between 130 and 170 °C) and elevated pressure conditions. This hampers the industrial application of MgAl LDH to magnesium substrates. In this paper, the growth of MgAl LDH conversion coating directly on magnesium alloy AZ91 at ambient conditions (25 °C) or elevated temperatures is reported in carbonate free electrolyte for the first time. The direct LDH synthesis on Mg alloys is enabled by the presence of organic chelating agents (NTA and EDTA), which control the amount of free and/or hydroxyl bound Mg2+ and Al3+ in the solution. The application of the chelating agents help overcoming the typical technological limitations of direct LDH synthesis on Mg alloys. The selection of chelators and the optimization of the LDH treatment process are supported by the analysis of the thermodynamic chemical equilibria.
URI: https://elib.bsu.by/handle/123456789/259249
Scopus: 10.1038/s41598-018-34751-7
metadata.dc.identifier.scopus: 85056135615
Sponsorship: Alexander von Humboldt-Stiftung; Horizon 2020 Framework Programme (H2020); H2020 Marie Skłodowska-Curie Actions (MSCA),645676.This work was financed in part by the European project MULTISURF (Marie Skłodowska-Curie Research Program, grant agreement No. 645676). SVL acknowledges the financial support of the Alexander von Humboldt Foundation via Experienced Researcher Grant.
Appears in Collections:Статьи химического факультета

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