Wetting behavior between fayalite-type slags and solid magnesia

Hiroyuki Fukuyama, Jeffrey R. Donald, James M. Toguri

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

The wetting behavior of single-crystalline magnesia (MgO) by fayalite-type slag melts has been studied by the sessile-drop technique, which incorporates high-temperature X-ray radiography. The experiments have been performed under oxygen partial pressures of 10 -6 and 10 -4 Pa at a temperature of 1473 K. The mass ratios of iron to silica, Fe/SiO 2, in the slag that has been used are 1.44 and 2.05. Infiltration behavior of a fayalite-type slag into MgO are discussed, based on the experimental results that involve wettability and surface tension. Two phases - magnesiowüstite and olivine - are observed at the interface. Interdiffusivity in the magnesiowüstite solid solution has been determined as a function of the iron oxide content. To investigate the interfacial reaction, experiments that use high-density MgO crucibles also have been conducted. Phase relations between the magnesiowüstite and the olivine, and the rate of growth of the phases, are discussed.

Original languageEnglish
Pages (from-to)2229-2236
Number of pages8
JournalJournal of the American Ceramic Society
Volume80
Issue number9
Publication statusPublished - 1997 Sep 1
Externally publishedYes

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

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