Use of synergistic mixture of chelating agents for in situ LDH growth on the surface of PEO-treated AZ91

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 indu...

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Autores principales: Petrova, E., Serdechnova, M., Shulha, T., Lamaka, S. V., Wieland, D. C. F., Karlova, P., Blawert, C., Starykevich, M., Zheludkevich, M. L.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2020
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7250903/
https://www.ncbi.nlm.nih.gov/pubmed/32457477
http://dx.doi.org/10.1038/s41598-020-65396-0
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author Petrova, E.
Serdechnova, M.
Shulha, T.
Lamaka, S. V.
Wieland, D. C. F.
Karlova, P.
Blawert, C.
Starykevich, M.
Zheludkevich, M. L.
author_facet Petrova, E.
Serdechnova, M.
Shulha, T.
Lamaka, S. V.
Wieland, D. C. F.
Karlova, P.
Blawert, C.
Starykevich, M.
Zheludkevich, M. L.
author_sort Petrova, E.
collection PubMed
description 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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spelling pubmed-72509032020-06-04 Use of synergistic mixture of chelating agents for in situ LDH growth on the surface of PEO-treated AZ91 Petrova, E. Serdechnova, M. Shulha, T. Lamaka, S. V. Wieland, D. C. F. Karlova, P. Blawert, C. Starykevich, M. Zheludkevich, M. L. Sci Rep Article 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. Nature Publishing Group UK 2020-05-26 /pmc/articles/PMC7250903/ /pubmed/32457477 http://dx.doi.org/10.1038/s41598-020-65396-0 Text en © The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Petrova, E.
Serdechnova, M.
Shulha, T.
Lamaka, S. V.
Wieland, D. C. F.
Karlova, P.
Blawert, C.
Starykevich, M.
Zheludkevich, M. L.
Use of synergistic mixture of chelating agents for in situ LDH growth on the surface of PEO-treated AZ91
title Use of synergistic mixture of chelating agents for in situ LDH growth on the surface of PEO-treated AZ91
title_full Use of synergistic mixture of chelating agents for in situ LDH growth on the surface of PEO-treated AZ91
title_fullStr Use of synergistic mixture of chelating agents for in situ LDH growth on the surface of PEO-treated AZ91
title_full_unstemmed Use of synergistic mixture of chelating agents for in situ LDH growth on the surface of PEO-treated AZ91
title_short Use of synergistic mixture of chelating agents for in situ LDH growth on the surface of PEO-treated AZ91
title_sort use of synergistic mixture of chelating agents for in situ ldh growth on the surface of peo-treated az91
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7250903/
https://www.ncbi.nlm.nih.gov/pubmed/32457477
http://dx.doi.org/10.1038/s41598-020-65396-0
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