TY - JOUR
T1 - Viscosity change and structural transition of Molten Fe at 5 GPa
AU - Terasaki, Hidenori
AU - Kato, Takumi
AU - Urakawa, S.
AU - Funakoshi, K.
AU - Sato, K.
AU - Suzuki, A.
AU - Okada, T.
N1 - Publisher Copyright:
Copyright 2002 by the American Geophysical Union.
PY - 2002/4/15
Y1 - 2002/4/15
N2 - The in situ viscosity measurements of the pure molten Fe under high pressures were made by falling sphere X-ray radiography method. Viscosity coefficients at about 2000 K were 15-24 mPa s at 2.7-5.0 GPa, and 4-9 mPa s at 5.0-7.0 GPa. Drastic decrease was found at around 5 GPa, at which stable solid phase below the melting temperatures change from delta (bcc) to gamma (fcc) phases. The observation indicates the possibility that the structural change in the molten Fe occurs in a narrow pressure interval (1 GPa) at the similar condition with the phase transformation in the solid.
AB - The in situ viscosity measurements of the pure molten Fe under high pressures were made by falling sphere X-ray radiography method. Viscosity coefficients at about 2000 K were 15-24 mPa s at 2.7-5.0 GPa, and 4-9 mPa s at 5.0-7.0 GPa. Drastic decrease was found at around 5 GPa, at which stable solid phase below the melting temperatures change from delta (bcc) to gamma (fcc) phases. The observation indicates the possibility that the structural change in the molten Fe occurs in a narrow pressure interval (1 GPa) at the similar condition with the phase transformation in the solid.
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U2 - 10.1029/2001GL014321
DO - 10.1029/2001GL014321
M3 - Article
AN - SCOPUS:0037092313
SN - 0094-8276
VL - 29
JO - Geophysical Research Letters
JF - Geophysical Research Letters
IS - 8
M1 - 1227
ER -