Equilibrium Thermodynamic Calculations Applied to Meteorite Mineral Assemblages

AbstractTitanium aluminides containing high niobium additions emerged as an attractive alloy family for automotive and aero-engine applications. Their processing by near net shape casting is rather demanding, not only due to easy contamination but also due to the fact that microstructure formation during solidification and subsequent solid state transformations sensitively depends on alloy composition and the applied processing conditions. The sequence of phase formation during solidification of the ternary alloy Ti-45Al-8Nb was analyzed based on non-equilibrium thermodynamic calculations and solidification experiments. This alloy solidifies completely via the β(Ti) phase, because the nucleation undercooling for the α(Ti) phase is high enough to prevent its formation. Thermodynamic calculations and experiments are shown to converge at last, with only minor improvements being necessary to correctly describe the metastable eutectic reaction “Liquid → β(Ti) + γ-TiAl” that occurs at the end of the solidification path.

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Thermodynamic calculations of linear chain molecules using a SAFT model

Molecular Physics ◽

10.1080/00268970150200514 ◽

2001 ◽

Vol 99 (1) ◽

pp. 65-76 ◽

Cited By ~ 2

Author(s):

Yiping Tang, Zhaohui Wang, Benjamin C.-Y.

Keyword(s):

Linear Chain ◽

Thermodynamic Calculations ◽

Chain Molecules

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Solidification - microstructure relationships of model ferro-silicon alloy by means of thermodynamic calculations of ternary (Al, Fe, Si) and (Ca, Fe, Si) phase diagrams

Journal de Chimie Physique ◽

10.1051/jcp/1993900409 ◽

1993 ◽

Vol 90 ◽

pp. 409-419 ◽

Cited By ~ 2

Author(s):

C Gueneau ◽

C Servant ◽

I Ansara

Keyword(s):

Phase Diagrams ◽

Solidification Microstructure ◽

Thermodynamic Calculations ◽

Silicon Alloy ◽

Ferro Silicon

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Detection of slip surface in earth slide based on mineral assemblages -An example of hydrothermal alteration zone landslide in East Hokkaido Japan-

Journal of the Japan Landslide Society ◽

10.3313/jls.51.26 ◽

2014 ◽

Vol 51 (3) ◽

pp. 106-112

Author(s):

Hiroyuki MAEDA ◽

Masanori KOHNO ◽

Yoshihiko SEKISHITA ◽

Satoshi UEMATSU ◽

Hiroshi NAYA

Keyword(s):

Hydrothermal Alteration ◽

Slip Surface ◽

Alteration Zone ◽

Mineral Assemblages

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CLAY MINERAL ASSEMBLAGES IN RECENT THERMAL ANOMALIES OF SOUTHERN KAMCHATKA

Russian Geology and Geophysics ◽

10.15372/rgg2019090 ◽

2019 ◽

Keyword(s):

Clay Mineral ◽

Thermal Anomalies ◽

Mineral Assemblages

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Diagenesis and low-temperature metamorphism of Mt. Medvednica, Croatia: Mineral assemblages and phyllosilicate characteristics

Acta Geologica Hungarica ◽

10.1556/ageol.47.2004.2-3.5 ◽

2004 ◽

Vol 47 (2-3) ◽

pp. 151-176 ◽

Cited By ~ 4

Author(s):

Katalin Judik ◽

Péter Árkai ◽

Péter Horváth ◽

Gábor Dobosi ◽

at al.

Keyword(s):

Low Temperature ◽

Mineral Assemblages

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Properties of Refrigerants from Cubic Equations of State

Revista de Chimie ◽

10.37358/rc.08.5.1827 ◽

2008 ◽

Vol 59 (5) ◽

Author(s):

Viorel Feroiu ◽

Dan Geana ◽

Catinca Secuianu

Keyword(s):

Experimental Data ◽

Vapor Pressure ◽

Equations Of State ◽

Ternary Mixtures ◽

Volumetric Properties ◽

Mixing Rules ◽

Saturation Curve ◽

Equilibrium Thermodynamic ◽

Liquid Equilibrium ◽

Binary And Ternary Mixtures

Vapour � liquid equilibrium, thermodynamic and volumetric properties were predicted for three pure hydrofluorocarbons: difluoromethane (R32), pentafluoroethane (R125) and 1,1,1,2 � tetrafluoroethane (R134a) as well as for binary and ternary mixtures of these refrigerants. Three cubic equations of state GEOS3C, SRK (Soave � Redlich � Kwong) and PR (Peng � Robinson) were used. A wide comparison with literature experimental data was made. For the refrigerant mixtures, classical van der Waals mixing rules without interaction parameters were used. The GEOS3C equation, with three parameters estimated by matching several points on the saturation curve (vapor pressure and corresponding liquid volumes), compares favorably to other equations in literature, being simple enough for applications.

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