Equilibrium solid state solubility and the solvus equation of binary systems

1991 ◽  
Vol 52 (4) ◽  
pp. 559-565
Author(s):  
Yu. I. Vesnin
Keyword(s):  
Solid State ◽  
Binary Systems

Solid-state mechanical alloying of plastic crystals

1997 ◽  
Vol 12 (12) ◽  
pp. 3254-3259 ◽  
Author(s):  
J. Font ◽  
J. Muntasell ◽  
E. Cesari ◽  
J. Pons
Keyword(s):  
Solid State ◽  
Binary System ◽  
Mechanical Alloying ◽  
Ball Milling ◽  
Room Temperature ◽  
Binary Systems ◽  
Solid Phase ◽  
Stable State ◽  
Plastic Crystals ◽  
Dsc Measurements

Ball milling has been used as a solid-state mechanical alloying technique in two binary systems of plastic crystals: neopentylglycol/pentaglycerin (NPG/PG), showing a partial solubility in the ordered phase, and 2-amino-2-methyl-1,3-propanediol/tris(hydroxymethyl) (AMP/TRIS) whose immiscibility in this ordered solid phase is almost total. For the AMP/TRIS system the stable state at room temperature was reached by milling. Contrarily, for NPG/PG, DSC measurements reveal that an annealing period is required after milling. These results have been compared with those of the pentaglycerin/pentaerythritol (PG/PE) binary system, previously studied, whose miscibility is total at room temperature.

Quantitative Predictions from Solid-State Physics - What do Phase Diagram Calculators Want?

1982 ◽  
Vol 19 ◽  
Author(s):  
Malcolm Rand
Keyword(s):  
Phase Diagram ◽  
Heat Capacity ◽  
Solid State ◽  
Binary Systems ◽  
High Pressures ◽  
Magnetic Moments ◽  
Configurational Entropy ◽  
Metastable Phases ◽  
Solid State Physics ◽  
Metastable Compounds

ABSTRACTThe types of information required for the calculation of phase diagrams are discussed by considering the computation of typical ternary sections from the constituent binary systems. Such calculations require a knowledge of the Gibbs energy of transformation (lattice stabilities) and Gibbs energies of mixing of wholly metastable, as well as the stable phases in binary systems. Similarly, the stabilities of metastable compounds such as Fe7C3 would be required for computations in the C-Cr-Fe system.These requirements are compared to the information provided by solid-state theoreticians. Essentially such calculations provide enthalpy values at 0 K (or some unspecified temperature for semi-empirical models); however the lattice dynamics and configurational entropy of simple phases have been included in some recent computations. The importance of predicting the entropy and thus heat capacity of metallic phases - particularly metastable phases - is therefore emphasized. Identification of those contributions to the heat capacity which are responsible for the differences between metal polymorphs is discussed, particularly the formalism for magnetic and atomic ordering phenomena. Predictions of ordering temperatures and magnetic moments as a function of composition would be of considerable help for phase diagram calculations.Ab-initio calculations already have considerable success in predicting molar volumes of both stable and metastable phases, so that such information will undoubtedly be of considerable value in studying alloy behaviour at high pressures.

Thermal Dimerization of Alkali Acrylate/3-Methyl-3-butenoate and Alkali Methacrylate/3-Methyl-3-butenoate Binary Systems in the Solid State

1996 ◽  
Vol 69 (4) ◽  
pp. 1087-1091
Author(s):  
Fumihiko Akutsu ◽  
Mari Inoki ◽  
Nozomu Nishimura ◽  
Yoshio Kasashima ◽  
Kiyoshi Naruchi
Keyword(s):  
Solid State ◽  
Binary Systems

THE EQUILIBRIUM DIAGRAMS, HEATS OF MIXING, DIPOLE MOMENTS, DENSITIES, AND BOILING POINTS OF THE SYSTEM ACETONE–CHLOROFORM–BENZENE

1961 ◽  
Vol 39 (4) ◽  
pp. 735-744 ◽  
Author(s):  
A. N. Campbell ◽  
E. M. Kartzmark ◽  
H. Friesen
Keyword(s):  
Solid State ◽  
Boiling Point ◽  
Binary Systems ◽  
Dipole Moments ◽  
Equilibrium Diagram ◽  
Ternary Mixtures ◽  
Heat Of Mixing ◽  
High Concentration ◽  
Boiling Points ◽  
Heats Of Mixing

The equilibrium diagrams show that a compound, stable in the solid state, is formed in the system chloroform–acetone, but no compound is formed in the binary systems chloroform–benzene and acetone–benzene. The ternary equilibrium diagram, the heats of mixing, and the dipole moments, all show that this compound continues to exist in the presence of benzene, up to a high concentration of benzene. Since a series of ternary mixtures is shown to exist having zero heat of mixing, it was thought that this series of mixtures might behave in a pseudoideal manner, but the determinations of density (molar volume) and boiling point show that this is not so.

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