Monotectic Al/Cd alloys with homogeneously dispersed Cd-droplets stabilized by strontium aluminide precipitates

István Budai, George Kaptay

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Al-rich Al-Sr alloys contain dispersed Al4Sr precipitates in the Al-matrix. When melted and emulsified together with a smaller volume of Cd, Cd-rich droplets are formed (being immiscible with the Al-rich liquid). The Al4Sr precipitates prefer the Al/Cd interface, stabilizing the Cd droplets in the Al-matrix. The contact angle of the Cd-rich liquid on Al 4Sr intermetallic phase under the Al-rich liquid alloy is about 90°, being ideal for emulsion stabilization. In this way, Al/Cd monotectic alloys can be produced with homogeneously dispersed Cd particles. The key to the success of this process is the in-situ formation of strontium aluminide precipitates stabilizing the Cd droplets in the liquid Al/Cd emulsion.

Original languageEnglish
Pages (from-to)423-425
Number of pages3
JournalIntermetallics
Volume19
Issue number3
DOIs
Publication statusPublished - Mar 1 2011

Keywords

  • A. Aluminides, miscellaneous
  • B. Alloy design
  • D. Phase interfaces
  • F. Electron microscopy, scanning

ASJC Scopus subject areas

  • Chemistry(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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