On the Role of Mesoentropy in Thermodynamics of First Order Phase Transformations in Alloys
Journal Title: Фізика і хімія твердого тіла - Year 2015, Vol 16, Issue 1
Abstract
A thermodynamics of a new phase formation in a binary alloy, taking into account the chemical depletion and the size distribution of new phase nuclei giving the energy input at high temperatures, is considered. It is shown the principal possibility of obtaining of the size distribution function for nuclei in the framework of a general variation procedure for the Gibbs free energy functional. The ‘chemical depletion’ related to the difference of compositions of the new phase embryo and the solution of the solid metastable alloy is discussed. The role of the ‘mesoentropy’ for the determination of whole energy of first order phase transformation is manifested.
Authors and Affiliations
A. Shirinyan
The Development of the Atomic Theory of the Formation of a New Phase in Adsorbirivannyh Layers in an External Electric Field
The article deals with the nucleation rate in the development of the atomic theory. The expression for the calculation of heterogeneous nucleation rate in adsorbed layers in an external electric field, which allows for t...
The Density of MoSi2 Electron States for the Amorphous Film
The density of MoSi2 electron states for the amorphous film has been calculated. An electron states at the top of valence band for this material are provided d electrons of molybdenum, p electrons of silicon and p electr...
Carbon-Silica Composites with Cellulose Acetate, Polyisocyanate and Copper Chloride
Cellulose acetate and polyisocyanate copolymer synthesized by simultaneous mixing of cellulose acetate and polyisocyanate with acetone solution of Copper chloride and fumed silicon dioxide was carbonized in a silicon dio...
The Impact of d– and f–compression on Anisotropy of Elastic Properties of Single Crystals with Hexagonal Close Packing of Lattice
Characteristic surfaces of Young's moduli were created usingtheory of elasticity of anisotropic crystals and computer processing of experimental data and patterns of their formationwere established. Detailed analysis of...
Models Semiinsulating Layers of Gallium Arsenide in Their Formation of Multiply Charged Ion Implantation
The technology multiply implantation of impurities, which allow lateral and vertical insulating layers. Experimental study on the creation of high-and thermostable insulating layers in ion-doped n +-n - i-semiinsulating...