Initial dissolution of Mg-containing phase and corrosion product formation in cut-edge corrosion of Zn-11%Al-3%Mg-0.2%Si coated steel

被引：7

作者：

Tokuda, Shimpei ^{[1
]}

Nishida, Yoshikatsu ^{[1
]}

Nishimoto, Masashi ^{[2
]}

Muto, Izumi ^{[2
]}

Shoji, Hiromasa ^{[1
,3
]}

机构：

[1] Nippon Steel Corp Ltd, Steel Res Labs, 20-1 Shintomi, Futtsu, Chiba 2938511, Japan

[2] Tohoku Univ, Grad Sch Engn, Dept Mat Sci, 6-6-02 Aramaki Aza-aoba,Aoba Ku, Sendai 9808579, Japan

[3] Nippon Steel Technol Co Ltd, R&D Supporting Unit, 20-1 Shintomi, Futtsu, Chiba 2930011, Japan

来源：

CORROSION SCIENCE | 2023年 / 225卷

关键词：

Zn-Al-Mg coated steel; Zn-11%Al-3%Mg-0.2%Si; Corrosion product; Cut-edge corrosion; Galvanic corrosion; Polarization; ZN-MG; ELECTROCHEMICAL REDUCTION; GALVANIC CORROSION; AL; ALLOY; RESISTANCE; MAGNESIUM; COATINGS; MICROSTRUCTURE; MECHANISMS;

D O I：

10.1016/j.corsci.2023.111605

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Simulated cut-edge specimens of Zn-11%Al-3%Mg-0.2%Si coated steel were fabricated, and their corrosion behaviors were assessed using salt spray test (SST). The Mg-containing phases in the coating near the simulated cut-edge dissolved during early corrosion, leading to the formation of protective corrosion products on the steel surface. The corrosion products suppressed the oxygen reduction reaction on the steel. Additionally, the anodic dissolution rate of the coating layer decreased after the SST. Consequently, the cut-edge corrosion rate of the ZnAl-Mg coating after the deposition of the corrosion products decreased compared with that of a conventional Zn coating.

引用

页数：13

共 23 条

[1] Mechanism of Corrosion Protection at Cut Edge of Zn-11%Al-3%Mg-0.2%Si Coated Steel Sheets
Suzuki, Yuki
Yamaguchi, Shinichi
Matsumoto, Masamitsu
Muto, Izumi
ISIJ INTERNATIONAL, 2020, 60 (09) : 2038 - 2043
[2] Mechanism of Corrosion Protection at Cut Edge of Zn-11%A1-3%Mg-0.2%Si Coated Steel Sheets
Suzuki, Yuki
Yamaguchi, Shinichi
Matsumoto, Illasamitsu
Muto, Izumi
TETSU TO HAGANE-JOURNAL OF THE IRON AND STEEL INSTITUTE OF JAPAN, 2019, 105 (07): : 752 - 758
[3] The corrosion resistance of Zn-11%Al-3%Mg-0.2%Si hot-dip galvanized steel sheet
Morimoto, Y
Kurosaki, M
Honda, K
Nishimura, K
Tanaka, S
Takahashi, A
Shindo, H
TETSU TO HAGANE-JOURNAL OF THE IRON AND STEEL INSTITUTE OF JAPAN, 2003, 89 (01): : 161 - 165
[4] Investigation of corrosion resistance of pre-painted Zn-11%Al-3%Mg-0.2%Si alloy coated steel sheet through outdoor exposure test in Okinawa
Ueda, K.
Takahashi, A.
Kubo, Y.
METALLURGIA ITALIANA, 2012, (03): : 13 - 19
[5] Solidification structure of coating layer in hot-dip Zn-11%Al-3%Mg-0.2%Si coated steel sheet
Honda, Kazuhiko
Yamada, Wataru
Ushioda, Kohsaku
JOURNAL OF THE JAPAN INSTITUTE OF METALS, 2008, 72 (01) : 51 - 56
[6] Solidification structure of the coating layer on hot-dip Zn-11%Al-3%Mg-0.2%Si-coated steel sheet
Honda, Kazuhiko
Yamada, Wataru
Ushioda, Kohsaku
MATERIALS TRANSACTIONS, 2008, 49 (06) : 1395 - 1400
[7] Nucleation of the primary al phase on TiAl3 during solidification in hot-dip Zn-11%Al-3%Mg-0.2%Si coated steel sheet
Honda, Kazuhiko
Ushioda, Kohsaku
Yamada, Wataru
Tanaka, Koki
Hatanaka, Hidetoshi
JOURNAL OF THE JAPAN INSTITUTE OF METALS, 2008, 72 (01) : 43 - 50
[8] Nucleation of the primary al phase on TiAl3 during solidification in hot-dip Zn-11%Al-3%Mg-0.2%Si-coated steel sheet
Honda, Kazuhiko
Ushioda, Kohsaku
Yamada, Wataru
Tanaka, Koki
Hatanaka, Hidetoshi
MATERIALS TRANSACTIONS, 2008, 49 (06) : 1401 - 1409
[9] Role of TiAl3 Fine Precipitate in Nucleation of the Primary Al Dendrite Phase during Solidification in Zn-11%Al-3%Mg-0.2%Si Coated Steel Sheet
Honda, Kazuhiko
Sugiyama, Masaaki
Ikematsu, Yoichi
Ushioda, Kohsaku
JOURNAL OF THE JAPAN INSTITUTE OF METALS, 2009, 73 (11) : 884 - 889
[10] Solidification structure of coating layer in hot-dip Zn-11% Al-3% Mg-0.2% Si-coated steel sheet and phase diagram of the system
Yamada, Wataru
Honda, Kazuhiko
Tanaka, Koki
Hatanaka, Hidetoshi
Ushioda, Kohsaku
Nippon Steel Technical Report, 2013, (102): : 37 - 43

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