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Metastability in the H2O and D2O Systems at High Pressure

Published online by Cambridge University Press:  21 February 2011

G. J. Piermarini ,
R. G. Munro  and
S. Block
G. J. Piermarini
Affiliation:
Center for Materials Science, National Bureau of StandardsWashington, D.C. 20234, U.S.A.
R. G. Munro
Affiliation:
Center for Materials Science, National Bureau of StandardsWashington, D.C. 20234, U.S.A.
S. Block
Affiliation:
Center for Materials Science, National Bureau of StandardsWashington, D.C. 20234, U.S.A.
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Abstract

The pressure and temperature parameters which delineate the equilibrium thermodynamic stability fields of the liquid, VI and VII phases, includinq the triple point, were measured for the H2;0 and D2;0 systems over the pressure range, 0.8 to 2.4 GPa, and the temperature interval, 20 to 135 °C. The phenomenon of metastability associated with the liquid-VII phase boundary was observed during this work; and, subsequently, a metastable extension of this coexistence curve was determined from the liquid-VI-VII triple point down to 20 °C for both H2;0 and D2;0. The measurements were made by optical polarizing microscopy in conjunction with a diamond anvil cell equipped with a miniature resistance coil heatinq element. Pressures were measured by the ruby fluorescence method.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 22: Symposium NY – High Pressure in Science and Technology , 1983 , 25
Copyright
Copyright © Materials Research Society 1984

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References

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