The improvement of mechanical properties of metallic foams by carbonates as a foaming agent

Takuya Koizumi, Kota Kido, Kazuhiko Kita, Koichi Mikado, Svyatoslav Gnyloskurenko, Takashi Nakamura

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Metallic foams are commonly produced using hydride foaming agents. Carbonates are safer to handle than hydrides; furthermore a fine and homogenous cell structure can be obtained in the powder metallurgy route. In this study, the effects of mass fraction of magnesium carbonate and dolomite as a foaming agent on cell structure and mechanical properties of the foams were investigated. Dolomite gave more fine and homogenous cell structure than magnesium carbonate. Average cell size of the foam by dolomite was twenty times less than that of the foam by TiH2· The dolomite-foam showed higher plateau stress than the TiH2-foam; therefore, dolomite-foam has high energy absorbing capability.

Original languageEnglish
Pages (from-to)355-360
Number of pages6
JournalNippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
Volume75
Issue number6
DOIs
Publication statusPublished - 2011 Jun 1

Keywords

  • Dolomite
  • Energy absorbing capability
  • Foaming agent
  • Magnesium carbonate
  • Metallic foam

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys
  • Materials Chemistry

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