Efficient growth of anodic films on magnesium in organic electrolytes containing fluoride and water

Hiroki Habazaki; Fumitaka Kataoka; Etsushi Tsuji; Yoshitaka Aoki; Shinji Nagata; Peter Skeldon; George E. Thompson

doi:10.1016/j.elecom.2014.06.011

Efficient growth of anodic films on magnesium in organic electrolytes containing fluoride and water

Hiroki Habazaki, Fumitaka Kataoka, Etsushi Tsuji, Yoshitaka Aoki, Shinji Nagata, Peter Skeldon, George E. Thompson

Materials Design Division

Research output: Contribution to journal › Article › peer-review

13 Citations (Scopus)

Abstract

The present study reports, for the first time, the highly efficient formation of barrier-type anodic films, with flat and parallel metal/film and film/electrolyte interfaces, on magnesium in ethylene glycol electrolytes containing ammonium fluoride and water. The anodizing voltage increases linearly with time during galvanostatic anodizing at 10 A m^{- 2} up to 350 V. The anodic film formed to 200 V is 247 nm thick, containing a crystalline MgF₂ phase. Analysis by Rutherford backscattering spectroscopy discloses the film composition of MgF_1.8O_0.1 and Pilling-Bedworth ratio (PBR) of 1.67. The PBR value greater than unity and the formation of chemically stable fluoride-based films may contribute to the film growth at high current efficiency.

Original language	English
Pages (from-to)	30-32
Number of pages	3
Journal	Electrochemistry Communications
Volume	46
DOIs	https://doi.org/10.1016/j.elecom.2014.06.011
Publication status	Published - 2014 Sept

Keywords

Anodic film
Anodizing
Fluoride
Magnesium
Organic electrolyte

ASJC Scopus subject areas

Electrochemistry

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10.1016/j.elecom.2014.06.011

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@article{16b3e984742343ea91d188876df3c4d6,

title = "Efficient growth of anodic films on magnesium in organic electrolytes containing fluoride and water",

abstract = "The present study reports, for the first time, the highly efficient formation of barrier-type anodic films, with flat and parallel metal/film and film/electrolyte interfaces, on magnesium in ethylene glycol electrolytes containing ammonium fluoride and water. The anodizing voltage increases linearly with time during galvanostatic anodizing at 10 A m- 2 up to 350 V. The anodic film formed to 200 V is 247 nm thick, containing a crystalline MgF2 phase. Analysis by Rutherford backscattering spectroscopy discloses the film composition of MgF1.8O0.1 and Pilling-Bedworth ratio (PBR) of 1.67. The PBR value greater than unity and the formation of chemically stable fluoride-based films may contribute to the film growth at high current efficiency.",

keywords = "Anodic film, Anodizing, Fluoride, Magnesium, Organic electrolyte",

author = "Hiroki Habazaki and Fumitaka Kataoka and Etsushi Tsuji and Yoshitaka Aoki and Shinji Nagata and Peter Skeldon and Thompson, {George E.}",

note = "Funding Information: A part of this work was supported by the Light Metal Educational Foundation, Inc. and conducted at Hokkaido University, supported by the “Nanotechnology Platform” Program of the Ministry of Education, Culture, Sports, Science, and Technology (MEXT), Japan.",

year = "2014",

month = sep,

doi = "10.1016/j.elecom.2014.06.011",

language = "English",

volume = "46",

pages = "30--32",

journal = "Electrochemistry Communications",

issn = "1388-2481",

publisher = "Elsevier Inc.",

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T1 - Efficient growth of anodic films on magnesium in organic electrolytes containing fluoride and water

AU - Habazaki, Hiroki

AU - Kataoka, Fumitaka

AU - Tsuji, Etsushi

AU - Aoki, Yoshitaka

AU - Nagata, Shinji

AU - Skeldon, Peter

AU - Thompson, George E.

N1 - Funding Information: A part of this work was supported by the Light Metal Educational Foundation, Inc. and conducted at Hokkaido University, supported by the “Nanotechnology Platform” Program of the Ministry of Education, Culture, Sports, Science, and Technology (MEXT), Japan.

PY - 2014/9

Y1 - 2014/9

N2 - The present study reports, for the first time, the highly efficient formation of barrier-type anodic films, with flat and parallel metal/film and film/electrolyte interfaces, on magnesium in ethylene glycol electrolytes containing ammonium fluoride and water. The anodizing voltage increases linearly with time during galvanostatic anodizing at 10 A m- 2 up to 350 V. The anodic film formed to 200 V is 247 nm thick, containing a crystalline MgF2 phase. Analysis by Rutherford backscattering spectroscopy discloses the film composition of MgF1.8O0.1 and Pilling-Bedworth ratio (PBR) of 1.67. The PBR value greater than unity and the formation of chemically stable fluoride-based films may contribute to the film growth at high current efficiency.

AB - The present study reports, for the first time, the highly efficient formation of barrier-type anodic films, with flat and parallel metal/film and film/electrolyte interfaces, on magnesium in ethylene glycol electrolytes containing ammonium fluoride and water. The anodizing voltage increases linearly with time during galvanostatic anodizing at 10 A m- 2 up to 350 V. The anodic film formed to 200 V is 247 nm thick, containing a crystalline MgF2 phase. Analysis by Rutherford backscattering spectroscopy discloses the film composition of MgF1.8O0.1 and Pilling-Bedworth ratio (PBR) of 1.67. The PBR value greater than unity and the formation of chemically stable fluoride-based films may contribute to the film growth at high current efficiency.

KW - Anodic film

KW - Anodizing

KW - Fluoride

KW - Magnesium

KW - Organic electrolyte

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U2 - 10.1016/j.elecom.2014.06.011

DO - 10.1016/j.elecom.2014.06.011

M3 - Article

AN - SCOPUS:84903167540

SN - 1388-2481

VL - 46

SP - 30

EP - 32

JO - Electrochemistry Communications

JF - Electrochemistry Communications

ER -

Efficient growth of anodic films on magnesium in organic electrolytes containing fluoride and water

Abstract

Keywords

ASJC Scopus subject areas

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