Microstructure and corrosion behavior of die-cast AM60B magnesium alloys in a complex salt solution: A slow positron beam study

Y. F. Liu, W. Yang, Q. L. Qin, Y. C. Wu, W. Wen, T. Zhai, B. Yu, D. Y. Li, A. Luo, G. L. Song

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

The microstructure and corrosion behavior of high pressure die-cast (HPDC) and super vacuum die-cast (SVDC) AM60B magnesium alloys were investigated in a complex salt solution using slow positron beam technique and potentiodynamic polarization tests. The experiments revealed that a CaCO3 film was formed on the surface of the alloys and that the rate of CaCO3 formation for the SVDC alloy with immersion time was slower than that of the HPDC alloy. The larger volume fraction of β-phase in the skin layer of the SVDC alloy than that of the HPDC alloy was responsible for the better corrosion resistance.

Original languageEnglish
Pages (from-to)65-74
Number of pages10
JournalCorrosion Science
Volume81
DOIs
StatePublished - Apr 2014

Bibliographical note

Funding Information:
This research is supported by the National Natural Science Foundation of China under Grants 51071111, 11175136 and J1210061, the Fundamental Research Funds for the Central Universities and AUTO21.

Keywords

  • A. Magnesium
  • B. SEM
  • B. XRD

ASJC Scopus subject areas

  • General Chemistry
  • General Chemical Engineering
  • General Materials Science

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