The role of Mg2Si on the corrosion behavior of wrought Mg-Zn-Mn alloy

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

Research output: Contribution to journalArticlepeer-review

71 Scopus citations

Abstract

Different quantities of silicon were added to Mg-6%Zn-0.5%Mn alloy and its effect on corrosion behavior investigated. AC and DC polarization and immersion tests were carried out on the extruded rods, which contain different quantities of silicon. A small quantity of Si (0.5 wt%) forms massive Chinese script Mg2Si intermetallics. Addition of 1 wt% or more Si was found to modify the Chinese script Mg2Si intermetallic into a fine polygonal shape. Improved corrosion behavior is noticed with the alloys containing more than 1 wt% Si addition, whereas addition of less than 1 wt% Si is found to reduce the corrosion resistance of Mg-6%Zn-0.5%Mn alloy. The polygonal shape Mg2Si intermetallics inhibit the corrosion more effectively compared to the Chinese script.

Original languageEnglish
Pages (from-to)860-867
Number of pages8
JournalIntermetallics
Volume16
Issue number7
DOIs
StatePublished - 1 Jul 2008

Keywords

  • A. Intermetallics, miscellaneous
  • B. Corrosion
  • C. Extrusion

ASJC Scopus subject areas

  • General Chemistry
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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