Newly designed surface control using Si addition in trace quantity for Zn-2Al-3Mg alloy coated steel sheet with improved corrosion resistance

Jae Won Lee; Injoon Son; Sung Jin Kim

doi:10.1016/j.apsusc.2022.153868

Newly designed surface control using Si addition in trace quantity for Zn-2Al-3Mg alloy coated steel sheet with improved corrosion resistance

Jae Won Lee, Injoon Son, Sung Jin Kim

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

13 Scopus citations

Abstract

The addition of Si even in trace quantity (0.04 wt%) refined the spangle structure in the outermost part of a Zn-2Al-3Mg coating by precipitating Mg₂Si and Zn-Al intermetallic phases on the ternary eutectic areas. In contrast to the conventional interface control of the Zn-Al-Mg-Si coating, this surface-controlled technique is a break-through in that it suppresses localized corrosion in the ternary eutectic areas of the outer surface by making minimal use of Si. Moreover, the surface coverage by corrosion products with a bi-layer structure and inhibiting property, following the rapid sacrificial dissolution of intermetallic phases, provided long-term corrosion resistance of steel.

Original language	English
Article number	153868
Journal	Applied Surface Science
Volume	598
DOIs	https://doi.org/10.1016/j.apsusc.2022.153868
State	Published - 1 Oct 2022

Keywords

Corrosion
Hot-dip galvanized steel
MgSi
Scanning electron microscopy
Silicon
Zn-Al-Mg alloy coatings

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10.1016/j.apsusc.2022.153868

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title = "Newly designed surface control using Si addition in trace quantity for Zn-2Al-3Mg alloy coated steel sheet with improved corrosion resistance",

abstract = "The addition of Si even in trace quantity (0.04 wt%) refined the spangle structure in the outermost part of a Zn-2Al-3Mg coating by precipitating Mg2Si and Zn-Al intermetallic phases on the ternary eutectic areas. In contrast to the conventional interface control of the Zn-Al-Mg-Si coating, this surface-controlled technique is a break-through in that it suppresses localized corrosion in the ternary eutectic areas of the outer surface by making minimal use of Si. Moreover, the surface coverage by corrosion products with a bi-layer structure and inhibiting property, following the rapid sacrificial dissolution of intermetallic phases, provided long-term corrosion resistance of steel.",

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author = "Lee, {Jae Won} and Injoon Son and Kim, {Sung Jin}",

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T1 - Newly designed surface control using Si addition in trace quantity for Zn-2Al-3Mg alloy coated steel sheet with improved corrosion resistance

AU - Lee, Jae Won

AU - Son, Injoon

AU - Kim, Sung Jin

PY - 2022/10/1

Y1 - 2022/10/1

N2 - The addition of Si even in trace quantity (0.04 wt%) refined the spangle structure in the outermost part of a Zn-2Al-3Mg coating by precipitating Mg2Si and Zn-Al intermetallic phases on the ternary eutectic areas. In contrast to the conventional interface control of the Zn-Al-Mg-Si coating, this surface-controlled technique is a break-through in that it suppresses localized corrosion in the ternary eutectic areas of the outer surface by making minimal use of Si. Moreover, the surface coverage by corrosion products with a bi-layer structure and inhibiting property, following the rapid sacrificial dissolution of intermetallic phases, provided long-term corrosion resistance of steel.

AB - The addition of Si even in trace quantity (0.04 wt%) refined the spangle structure in the outermost part of a Zn-2Al-3Mg coating by precipitating Mg2Si and Zn-Al intermetallic phases on the ternary eutectic areas. In contrast to the conventional interface control of the Zn-Al-Mg-Si coating, this surface-controlled technique is a break-through in that it suppresses localized corrosion in the ternary eutectic areas of the outer surface by making minimal use of Si. Moreover, the surface coverage by corrosion products with a bi-layer structure and inhibiting property, following the rapid sacrificial dissolution of intermetallic phases, provided long-term corrosion resistance of steel.

KW - Corrosion

KW - Hot-dip galvanized steel

KW - MgSi

KW - Scanning electron microscopy

KW - Silicon

KW - Zn-Al-Mg alloy coatings

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DO - 10.1016/j.apsusc.2022.153868

M3 - Article

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SN - 0169-4332

VL - 598

JO - Applied Surface Science

JF - Applied Surface Science

M1 - 153868

ER -

Newly designed surface control using Si addition in trace quantity for Zn-2Al-3Mg alloy coated steel sheet with improved corrosion resistance

Abstract

Keywords

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