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

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.

2018 ◽  
Vol 54 (95) ◽  
pp. 13351-13354 ◽  
Author(s):  
Laura J. B. M. Kollau ◽  
Mark Vis ◽  
Adriaan van den Bruinhorst ◽  
A. Catarina C. Esteves ◽  
Remco Tuinier

The non-ideality of the eutectic phase diagram is quantified using a single interaction parameter that could be determined directly from the experimental eutectic temperature of the mixture.


2015 ◽  
Vol 816 ◽  
pp. 578-580 ◽  
Author(s):  
Shu Yu Yang ◽  
Min Jiang ◽  
Lei Wang

The phase equilibria of new-type Co-based superalloys which include the system of Co-Al-W were studied by CALPHAD method. It was shown that γ+γ' two-phase regions were existed in the calculated phase diagrams. The compositions of new-type Co-based superalloys which can obtain γ+γ' microstructures were predicted due to the calculated phase diagram. The mole fractions of the constituent phases of Co-Al-W-Ni-Cr alloys were calculated. The temperature of γ' phase began to precipitate at about 1050°C.


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

1984 ◽  
Vol 62 (3) ◽  
pp. 457-474 ◽  
Author(s):  
A. D. Pelton ◽  
C. W. Bale ◽  
P. L. Lin

Phase diagrams and thermodynamic properties of five additive molten salt ternary systems and nine reciprocal molten salt ternary systems containing the ions Li+, Na+, [Formula: see text], OH− are calculated from the thermodynamic properties of their binary subsystems which were obtained previously by a critical assessment of the thermodynamic data and the phase diagrams in these binary systems. Thermodynamic properties of ternary liquid phases are estimated from the binary properties by means of the Conformal Ionic Solution Theory. The ternary phase diagrams are then calculated from these thermodynamic properties by means of computer programs designed for the purpose. It is found that a ternary phase diagram can generally be calculated in this way with a maximum error about twice that of the maximum error in the binary phase diagrams upon which the calculations are based. If, in addition, some reliable ternary phase diagram measurements are available, these can be used to obtain small ternary correction terms. In this way, ternary phase diagram measurements can be smoothed and the isotherms drawn in a thermodynamically correct way. The thermodynamic approach permits experimental data to be critically assessed in the light of thermodynamic principles and accepted solution models. A critical assessment of error limits on all the calculated ternary diagrams is made, and suggestions as to which composition regions merit further experimental study are given.


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

2017 ◽  
Vol 50 (6) ◽  
pp. 2354-2363 ◽  
Author(s):  
Konstantinos Misichronis ◽  
Jihua Chen ◽  
Adam Imel ◽  
Rajeev Kumar ◽  
James Thostenson ◽  
...  

2013 ◽  
Vol 717 ◽  
pp. 184-187
Author(s):  
Shuai Zhang ◽  
Lei Chen

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.


1998 ◽  
Vol 43 (3) ◽  
pp. 362-366 ◽  
Author(s):  
P. Marteau ◽  
P. Tobaly ◽  
V. Ruffier-Meray ◽  
J. C. de Hemptinne

ACS Omega ◽  
2018 ◽  
Vol 3 (12) ◽  
pp. 18227-18233 ◽  
Author(s):  
Junbo Gong ◽  
Xiaodong Fan ◽  
Rucheng Dai ◽  
Zhongping Wang ◽  
Zejun Ding ◽  
...  

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