Application of X-ray radiography to study the segregation process of iron from silicate under high pressure and high temperature

Hirotada Gotou, Takehiko Yagi, Riko Iizuka, Akio Suzuki

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

X-ray radiography was applied to observe the segregation process of iron from silicate at high pressure and high temperature in mixtures containing light elements. As the temperature of the hydrogen-containing sample increases, the molten iron becomes coherent. Small droplets of iron sink to the bottom of the chamber, where they merge into a single, large droplet. The small iron droplets exhibit complex motion, moving in random directions. Markedly different behavior is found in the sulfur-containing sample, where no clear motion of the molten iron is observed. Instead, as the sample temperature is increased, the concentration of iron near the wall of the sample chamber gradually increases. These observations demonstrate that the behavior of molten iron changes according to the dissolved elements. This X-ray radiography experiment represents a powerful technique to study the segregation process of molten iron from solid or partially molten silicate, particularly when combined with high-resolution tomography techniques.

Original languageEnglish
Pages (from-to)130-138
Number of pages9
JournalHigh Pressure Research
Volume35
Issue number2
DOIs
Publication statusPublished - 2015 Apr 3

Keywords

  • X-ray radiography
  • core segregation simulation
  • hydrogen
  • sulfur

ASJC Scopus subject areas

  • Condensed Matter Physics

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