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Radiographic study on the viscosity of the Fe-FeS melts at the pressure of 5 to 7 GPa
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Satoru Urakawa
,
Hidenori Terasaki
Published/Copyright:
March 26, 2015
Abstract
Stokes’ viscometry combined with in situ X-ray radiographic observation, using the 6-8 type multi-anvil press and synchrotron radiation, has been applied to the viscosity measurement of the Fe- FeS melt up to pressures of 7 GPa. The viscosity is found to be about 2 × 10-2 Pa-s at 5 to 7 GPa and temperatures about 1350 K, in marked contrast to previous viscosity measurements, which showed high viscosity, 0.5 to 14 Pa-s, at 2 to 5 GPa (LeBlanc and Secco 1996). Our viscosity data, however, is consistent with all other evidence, which include 1 atm viscosity data, X-ray structure analysis, and ab initio simulations. Recent viscosity measurements (Dobson et al. 2000) also showed the viscosity of Fe-FeS melt to be about 10-2 Pa-s at 2.5 GPa. Thus, we are confident that the viscosity of the Fe- FeS melt is close to a typical value (10-2 Pa-s) of viscosity for liquid metal even at high pressures.
Received: 2000-9-7
Accepted: 2001-1-8
Published Online: 2015-3-26
Published in Print: 2001-4-1
© 2015 by Walter de Gruyter Berlin/Boston
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- Biodurability of talc
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- Cathodoluminescence study of apatite crystals
- Hydrogen in spessartine-almandine garnets as a tracer of granitic pegmatite evolution
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