# Corrosion Protection Behavior of Aluminate Ion-Loaded Layered Double Hydroxide Coating on AZ31 Magnesium Alloy

https://mdr.nims.go.jp/datasets/4f7b51ab-f98b-4f29-a61e-f0850e7dc0cc

## File

- [ECS Research Manuscript final.pdf](https://mdr.nims.go.jp/filesets/423c419a-858f-4ff7-b1ad-0282749f33ac/download) ([Detail](https://mdr.nims.go.jp/filesets/423c419a-858f-4ff7-b1ad-0282749f33ac.md))

## Id

4f7b51ab-f98b-4f29-a61e-f0850e7dc0cc

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2024-01-09T07:02:20.590112Z

## Updated at

2024-12-20T07:30:55.759857Z

## Published at

2024-12-20T07:30:55.853442Z

## Doi

https://doi.org/10.48505/nims.4337

## First published url

https://doi.org/10.1149/1945-7111/ad13db

## Date published

2023-12-01

## Recorded date published

2023-12-1

## Resource type

journal_article

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: Corrosion Protection Behavior of Aluminate Ion-Loaded Layered Double Hydroxide
    Coating on AZ31 Magnesium Alloy
  title_type: original
  lang: en

## Description

- description: "Effect of aluminate ion loading on the corrosion behavior of layered
    double hydroxide (LDH) coating of Mg-3Al-1Zn (AZ31) alloy was investigated. The
    corrosion inhibition performance of NaAlO2 for AZ31 was examined by immersion
    and polarization tests. Then, aluminate ion-loaded LDH (LDHAlO2) was synthesized
    from hydrotalcite (LDHCO3) and co-deposited with magnesium and aluminum double
    hydroxide on AZ31 by electrophoretic co-deposition. Polarization, electrochemical
    impedance (EI) and wet-dry cyclic corrosion tests were conducted on the LDHAlO2-
    and LDHCO3-coated specimens. Adding 10-50 mmol/L NaAlO2 to 0.1 mol/L NaCl solution
    induced a clear passive region on the polarization curves of AZ31 and shifted
    the breakdown potential over -1.0 V (Ag/AgCl), indicating the corrosion inhibition
    property of NaAlO2. In the polarization and EI tests, the aluminate ion loading
    did not noticeably enhance the corrosion protection ability of the LDH coating
    as shown by higher quasi-passive current density and lower Rp than without loading.
    However, in the wet-dry corrosion tests, the LDHAlO2-coated AZ31 demonstrated
    less weight gain and fewer clusters of shallow micro-pits, while the LDHCO3-coated
    AZ31 showed numerous deeper pits on the entire surface. It was revealed that loading
    aluminate ions to the LDH coatings is promising for enhancing their corrosion
    protection ability in atmospheric environments.\r\n"
  description_type: abstract
  lang: eng

## Creator

- name: Sachiko Hiromoto
  role: author
  orcid: https://orcid.org/0000-0003-4666-6708
  organization: National Institute for Materials Science
- name: Kasumi Fukuzawa
  role: author
- name: Kotaro Doi
  role: author
  orcid: https://orcid.org/0000-0002-5204-1088
  organization: National Institute for Materials Science
- name: Makoto Chiba
  role: author
  organization: National Institute for Materials Science
- name: Naofumi Ohtsu
  role: author

## Contact agent



## Publisher

organization: The Electrochemical Society

## Managing organization



## Keyword

- subject: magnesium alloy
  schema: not_defined
- subject: layered double hydroxide coating
  schema: not_defined
- subject: corrosion inhibitor
  schema: not_defined
- subject: electrophoretic co-deposition
  schema: not_defined
- subject: atmospheric corrosion environment
  schema: not_defined

## Rights

- description: This is an author-created, un-copyedited version of an article accepted
    for publication/published in Journal of The Electrochemical Society. IOP Publishing
    Ltd is not responsible for any errors or omissions in this version of the manuscript
    or any version derived from it. The Version of Record is available online at https://doi.org/10.1149/1945-7111/ad13db.
  identifier: https://creativecommons.org/licenses/by-nc-nd/4.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo

start_date: 2023-12-20
end_date: 2024-12-20

## Journal

- title: JOURNAL OF THE ELECTROCHEMICAL SOCIETY
  issn: '00134651'
  volume: '170'
  start_page: 121502
  end_page: 121502

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## Measurement method



## Specimen



## Chemical composition



## Structure for specimen



## Structural feature for specimen



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## Fileset

- id: 423c419a-858f-4ff7-b1ad-0282749f33ac
  filename: ECS Research Manuscript final.pdf
  content_type: application/pdf
  size: 4668410
  md5: fa6742b42e7b101992fe5b5b654a8abf

## Thumbnail

fileset_id: 423c419a-858f-4ff7-b1ad-0282749f33ac
filename: ECS Research Manuscript final.pdf