Melting Temperature of FeO under Pressure

2013 ◽  
Vol 717 ◽  
pp. 184-187
Author(s):  
Shuai Zhang ◽  
Lei Chen
Keyword(s):  
Phase Diagram ◽  
Melting Temperature ◽  
Surface Stress ◽  
Clapeyron Equation ◽  
Metallurgical Processes ◽  
Pressure Phase ◽  
Effect Of Surface ◽  
Volume Difference

The melting temperature-pressure phase diagram [Tm(P)-P] for wustite (FeO) is predicted through the Clapeyron equation where the pressure-dependent volume difference is modeled by introducing the effect of surface stress induced pressure. FeO plays an important role in many metallurgical processes and in the Earths mantle mineralogy. FeO is also of great interest in the field of state solid physics and chemistry because of its electrical, magnetic, structural and non-stoichiometric properties.

Melting Temperatures of Several Oxides under Pressure

2007 ◽  
Vol 546-549 ◽  
pp. 1817-1820
Author(s):  
S. Zhang ◽  
Shu Sheng Jia
Keyword(s):  
Phase Diagram ◽  
Melting Temperature ◽  
Magnesium Oxide ◽  
Model Prediction ◽  
Surface Stress ◽  
Clapeyron Equation ◽  
Melting Temperatures ◽  
Pressure Phase ◽  
Effect Of Surface ◽  
Volume Difference

The melting temperature-pressure phase diagram [Tm(P)-P] for corundum (Al2O3), wustite (FeO) and magnesium oxide (MgO) are predicted through the Clapeyron equation where the pressure-dependent volume difference is modeled by introducing the effect of surface stress induced pressure. The model prediction is found to be consistent with the present experimental results.

Melting Temperature of MgO under Pressure

2013 ◽  
Vol 319 ◽  
pp. 19-22
Author(s):  
Shuai Zhang ◽  
Lei Chen
Keyword(s):  
State Physics ◽  
Phase Diagram ◽  
Melting Temperature ◽  
Surface Stress ◽  
Solid State Physics ◽  
Clapeyron Equation ◽  
The Earth ◽  
Pressure Phase ◽  
Effect Of Surface ◽  
Volume Difference

The melting temperature-pressure phase diagram [Tm(P)-P] for magnesium oxide (MgO) is predicted through the Clapeyron equation where the pressure-dependent volume difference is modeled by introducing the effect of surface stress induced pressure. MgO is a material of key importance to earth sciences and solid-state physics: it is one of the most abundant minerals in the Earth and a prototype material for a large group of ionic oxides.

Melting Temperature of Al2O3 under Pressure

2012 ◽  
Vol 549 ◽  
pp. 745-748 ◽  
Author(s):  
S. Zhang
Keyword(s):  
Phase Diagram ◽  
Melting Temperature ◽  
Surface Stress ◽  
High Hardness ◽  
Industrial Applications ◽  
Clapeyron Equation ◽  
Support Matrix ◽  
Pressure Phase ◽  
Effect Of Surface ◽  
Volume Difference

The melting temperature-pressure phase diagram [Tm(P)-P] for corundum (Al2O3) is predicted through the Clapeyron equation where the pressure-dependent volume difference is modeled by introducing the effect of surface stress induced pressure. Al2O3has been employed to test the reliability of the model, because of its important role. Al2O3has been extensively investigated because of its widely ranging industrial applications. This includes applications as a refractory material both of high hardness and stability up to high temperatures, as a support matrix in catalysis.

Effect of Pressure on Melting Temperature of Silicon and Germanium

2005 ◽  
Vol 475-479 ◽  
pp. 1893-1896 ◽  
Author(s):  
C.C. Yang ◽  
Qing Jiang
Keyword(s):  
Melting Temperature ◽  
Surface Stress ◽  
Clapeyron Equation ◽  
Effect Of Pressure ◽  
Silicon And Germanium ◽  
Theoretical Results ◽  
Effect Of Surface ◽  
Volume Difference

The pressure-dependent melting temperature of bulk Si, bulk Ge and nanocrystalline (nc) Si are predicted by the Clapeyron equation where the pressure-dependent volume difference is modeled by introducing the effect of surface stress induced pressure. The predictions are found to be consistent with the present experimental and other theoretical results.

Temperature-pressure phase diagram of deuterated tetramethylammonium tetrachlorozincate

1984 ◽  
Vol 45 (5) ◽  
pp. 929-938 ◽  
Author(s):  
G. Marion ◽  
R. Almairac ◽  
M. Ribet ◽  
U. Steigenberger ◽  
C. Vettier
Keyword(s):  
Phase Diagram ◽  
Pressure Phase

scholarly journals Phase Diagram of Binary Alloy Nanoparticles under High Pressure

Materials ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 2929
Author(s):  
Han Gyeol Kim ◽  
Joonho Lee ◽  
Guy Makov
Keyword(s):  
Phase Diagram ◽  
Phase Diagrams ◽  
Interaction Parameter ◽  
Excess Volume ◽  
Eutectic Temperature ◽  
Calphad Method ◽  
Alloy Nanoparticles ◽  
Thermodynamic Conditions ◽  
Nanoparticle System ◽  
Pressure Phase

CALPHAD (CALculation of PHAse Diagram) is a useful tool to construct phase diagrams of various materials under different thermodynamic conditions. Researchers have extended the use of the CALPHAD method to nanophase diagrams and pressure phase diagrams. In this study, the phase diagram of an arbitrary A–B nanoparticle system under pressure was investigated. The effects of the interaction parameter and excess volume were investigated with increasing pressure. The eutectic temperature was found to decrease in most cases, except when the interaction parameter in the liquid was zero and that in the solid was positive, while the excess volume parameter of the liquid was positive. Under these conditions, the eutectic temperature increased with increasing pressure.

Temperature–Pressure Phase Diagram for Rb2ZnCl4 Crystals

2015 ◽  
Vol 82 (2) ◽  
pp. 228-233 ◽  
Author(s):  
V. Yu. Kurlyak ◽  
V. Yo. Stadnyk ◽  
V. Stakhura
Keyword(s):  
Phase Diagram ◽  
Pressure Phase

In-situ high-pressure study of the ordered phase of ethyl propionate

2007 ◽  
Vol 63 (1) ◽  
pp. 111-117 ◽  
Author(s):  
Roman Gajda ◽  
Andrzej Katrusiak
Keyword(s):  
High Pressure ◽  
Degrees Of Freedom ◽  
Molecular Volume ◽  
Ethyl Propionate ◽  
Intermolecular Contacts ◽  
High Pressure Study ◽  
Pressure Phase ◽  
Three Degrees Of Freedom ◽  
Volume Difference

Ethyl propionate, C5H10O2 (m.p. 199 K), has been in-situ pressure-frozen and its structure determined at 1.34, 1.98 and 2.45 GPa. The crystal structure of the new high-pressure phase (denoted β) is different from phase α obtained by lowering the temperature. The freezing pressure of ethyl propionate at 296 K is 1.03 GPa. The molecule assumes an extended chain s-trans–trans–trans conformation, only slightly distorted from planarity. The closest intermolecular contacts in both phases are formed between carbonyl O and methyl H atoms; however, the ethyl-group H atoms in phase β form no contacts shorter than 2.58 Å. A considerable molecular volume difference of 24.2 Å3 between phases α and β can be rationalized in terms of degrees of freedom of molecules arranged into closely packed structures: the three degrees of freedom allowed for rearrangements of molecules confined to planar sheets in phase α, but are not sufficient for obtaining a densely packed pattern.

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