Effect of CaO on Oxidation Resistance and Microstructure of Pure Mg

• Ha Seong-Ho

  Korea Institute of Industrial Technology

• Lee Jin-Kyu

  Korea Institute of Industrial Technology

• Kim Shae K.

  Korea Institute of Industrial Technology

Abstract

This study was carried out to examine reduction mechanism of CaO and to investigate behaviors of CaO in pure Mg in terms of microstructure, oxidation resistance and phase formation. Pure Mg was used instead of Mg alloys to minimize the effects of other elements. With respect to CaO content, microstructures of the alloys showed prominent grain refinement. Mg₂Ca phase was formed even in 0.07CaO added pure Mg by reduction, while Mg₂Ca phase was formed over 1.35Ca added pure Mg. With respect to CaO content, the hardness of CaO added pure Mg was increased by grain refinement. From oxidation test by TGA, the oxidation behavior of CaO added Mg was similar to that of Ca added Mg. From AES result, there was the thin oxide layer mixed with MgO and CaO in CaO added Mg.

Journal

• MATERIALS TRANSACTIONS

  MATERIALS TRANSACTIONS 49 (5), 1081-1083, 2008

  The Japan Institute of Metals and Materials

Keywords

• magnesium
• calcium oxide
• Mg<SUB>2</SUB>Ca phase
• reduction

Details

• CRID: 1390001204249338240
• NII Article ID: 10021146799
• NII Article ID: 130004453987
• NII Book ID: AA1151294X
• DOI: 10.2320/matertrans.mc200786
• ISSN: 13475320
• ISSN: 13459678
• NDL BIB ID: 9480666
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I9480666
• Web Site: https://www.jstage.jst.go.jp/article/matertrans/49/5/49_MC200786/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed