In situ investigation of high-pressure melting behavior in the Fe-S system using synchrotron X-ray radiography

Journal Article · Wed Nov 12 00:00:00 EST 2008 · High Pressure Res.

DOI:https://doi.org/10.1080/08957950802318883· OSTI ID:1006941

Chen, B; Gao, L; Leinenweber, K; Wang, Y; Sanehira, T; Li, J ^[1]

---

1. UIUC

We studied the high-pressure melting behavior of Fe-S mixtures containing 9 wt% sulfur using the synchrotron X-ray radiographic method in a large volume press. By opening two graphite windows along the X-ray path and using boron nitride capsules, we were able to observe segregation of sulfur-rich liquid and iron-rich solid upon initial melting and determine the eutectic temperature of the Fe-S system at pressures between 13 and 16 GPa. Our results are in excellent agreement with the existing data from quench experiments, and are further supported by in situ X-ray diffraction measurements. The liquidus temperatures of this composition, determined on the basis of the disappearance of the solid phase on the radiographs, are also consistent with literature values. By observing radiographic changes with time, we monitored the approach to equilibrium and obtained preliminary data on the kinetics of the melting process.

• Research Organization: Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
• Sponsoring Organization: USDOE
• OSTI ID: 1006941
• Journal Information: High Pressure Res., Vol. 28, Issue (3) ; 09, 2008; ISSN 0895-7959
• Country of Publication: United States
• Language: ENGLISH

Related Subjects

43 PARTICLE ACCELERATORS
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BEHAVIOR
BORON NITRIDES
EQUILIBRIUM
EUTECTICS
GRAPHITE
IMAGES
IRON SULFIDES
KINETICS
LIQUIDS
MELTING
MELTING POINTS
MIXTURES
PRESSURE RANGE GIGA PA
SEGREGATION
SOLIDS
SULFUR
SYNCHROTRON RADIATION
X-RAY DIFFRACTION
X-RAY RADIOGRAPHY