The role of Ca microalloying on the microstructure and corrosion behavior of Mg-6Zn-Mn-(0.5-2)Si alloys

V. Lisitsyn; G. Ben-Hamu; D. Eliezer; K. S. Shin

doi:10.1016/j.corsci.2009.01.009

The role of Ca microalloying on the microstructure and corrosion behavior of Mg-6Zn-Mn-(0.5-2)Si alloys

V. Lisitsyn, G. Ben-Hamu, D. Eliezer, K. S. Shin

Department of Materials Engineering

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

45 Scopus citations

Abstract

Different amount of silicon and calcium additions have been carried out on Mg-6% Zn-0.5% Mn alloy and its effect on corrosion behavior is investigated. DC polarization and immersion tests were carried out on the extruded rods, which contain different amounts of silicon and calcium. Small amount of Si (0.5 wt.%) forms massive Chinese script Mg₂Si intermetallics. Addition of 1 wt.% or more Si found to modify the Chinese script Mg₂Si intermetallic into a fine polygonal shape. However, addition of Ca to Mg-6% Zn-0.5Mn-0.5Si found to modify the Chinese script Mg₂Si intermetallic into a fine polygonal shape. Improved corrosion behavior is noticed with the alloys containing Ca addition. The polygonal shape Mg₂Si intermetallics inhibit the corrosion more effectively compared to the Chinese script.

Original language	English
Pages (from-to)	776-784
Number of pages	9
Journal	Corrosion Science
Volume	51
Issue number	4
DOIs	https://doi.org/10.1016/j.corsci.2009.01.009
State	Published - 1 Apr 2009

Keywords

A. Magnesium
B. Polarization
B. TEM
B. Weight loss

ASJC Scopus subject areas

General Chemistry
General Chemical Engineering
General Materials Science

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10.1016/j.corsci.2009.01.009

Cite this

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title = "The role of Ca microalloying on the microstructure and corrosion behavior of Mg-6Zn-Mn-(0.5-2)Si alloys",

abstract = "Different amount of silicon and calcium additions have been carried out on Mg-6% Zn-0.5% Mn alloy and its effect on corrosion behavior is investigated. DC polarization and immersion tests were carried out on the extruded rods, which contain different amounts of silicon and calcium. Small amount of Si (0.5 wt.%) forms massive Chinese script Mg2Si intermetallics. Addition of 1 wt.% or more Si found to modify the Chinese script Mg2Si intermetallic into a fine polygonal shape. However, addition of Ca to Mg-6% Zn-0.5Mn-0.5Si found to modify the Chinese script Mg2Si intermetallic into a fine polygonal shape. Improved corrosion behavior is noticed with the alloys containing Ca addition. The polygonal shape Mg2Si intermetallics inhibit the corrosion more effectively compared to the Chinese script.",

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AU - Lisitsyn, V.

AU - Ben-Hamu, G.

AU - Eliezer, D.

AU - Shin, K. S.

PY - 2009/4/1

Y1 - 2009/4/1

N2 - Different amount of silicon and calcium additions have been carried out on Mg-6% Zn-0.5% Mn alloy and its effect on corrosion behavior is investigated. DC polarization and immersion tests were carried out on the extruded rods, which contain different amounts of silicon and calcium. Small amount of Si (0.5 wt.%) forms massive Chinese script Mg2Si intermetallics. Addition of 1 wt.% or more Si found to modify the Chinese script Mg2Si intermetallic into a fine polygonal shape. However, addition of Ca to Mg-6% Zn-0.5Mn-0.5Si found to modify the Chinese script Mg2Si intermetallic into a fine polygonal shape. Improved corrosion behavior is noticed with the alloys containing Ca addition. The polygonal shape Mg2Si intermetallics inhibit the corrosion more effectively compared to the Chinese script.

AB - Different amount of silicon and calcium additions have been carried out on Mg-6% Zn-0.5% Mn alloy and its effect on corrosion behavior is investigated. DC polarization and immersion tests were carried out on the extruded rods, which contain different amounts of silicon and calcium. Small amount of Si (0.5 wt.%) forms massive Chinese script Mg2Si intermetallics. Addition of 1 wt.% or more Si found to modify the Chinese script Mg2Si intermetallic into a fine polygonal shape. However, addition of Ca to Mg-6% Zn-0.5Mn-0.5Si found to modify the Chinese script Mg2Si intermetallic into a fine polygonal shape. Improved corrosion behavior is noticed with the alloys containing Ca addition. The polygonal shape Mg2Si intermetallics inhibit the corrosion more effectively compared to the Chinese script.

KW - A. Magnesium

KW - B. Polarization

KW - B. TEM

KW - B. Weight loss

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The role of Ca microalloying on the microstructure and corrosion behavior of Mg-6Zn-Mn-(0.5-2)Si alloys

Abstract

Keywords

ASJC Scopus subject areas

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