Enthalpy – entropy compensation effect in grain boundary phenomena
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Pavel Lejček
Abstract
The existence of the so-called “enthalpy – entropy compensation effect” as an inherent property of a system is proven on the basis of a pure thermodynamic analysis. The compensation effect is documented for the example of grain boundary segregation and migration. It is shown that the changes of the values of characteristic enthalpy and entropy that fulfil the compensation effect are caused by the changes of grain boundary energy via the changes of grain boundary structure and system chemistry: Despite of the nature of such changes, a single linear dependence between the enthalpy and entropy should exist under the same mechanism of the process.
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The supports of the Inst. Res. Plan AV0Z 10100520 and the project PROGRESS (Ministry of Industry and Trade of the Czech Republic) FF–P2/053 are gratefully acknowledged.
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© 2005 Carl Hanser Verlag, München
Artikel in diesem Heft
- Frontmatter
- Editorial
- Editorial
- Articles Basic
- Thermodynamics of grain boundary adsorption in binary systems with limited solubility
- Microstructural characteristics of 3-d networks
- On the three-dimensional twin-limited microstructure
- Grain growth kinetics in 2D polycrystals: impact of triple junctions
- Thermal stability of polycrystalline nanowires
- Conservative motion of parent-martensite interfaces
- Enthalpy – entropy compensation effect in grain boundary phenomena
- Thermodynamic stabilization of nanocrystallinity
- On the relation between the anisotropies of grain boundary segregation and grain boundary energy
- Influence of faceting-roughening on triple-junction migration in zinc
- The influence of triple junction kinetics on the evolution of polycrystalline materials during normal grain growth: New evidence from in-situ experiments using columnar Al foil
- Grain boundary dynamics and selective grain growth in non-ferromagnetic metals in high magnetic fields
- Grain boundary mobility under a stored-energy driving force: a comparison to curvature-driven boundary migration
- Diffusional behavior of nanoscale lead inclusions in crystalline aluminum
- Quantitative experiments on the transition between linear to non-linear segregation of Ag in Cu bicrystals studied by radiotracer grain boundary diffusion
- Room-temperature grain boundary diffusion data measured from historical artifacts
- Solid state infiltration of porous steel with aluminium by the forcefill process
- A mechanism of plane matching boundary-assisted α/γ phase transformation in Fe–Cr alloy based on in-situ observations
- Fast penetration of Ga in Al: liquid metal embrittlement near the threshold of grain boundary wetting
- High-pressure effect on grain boundary wetting in aluminium bicrystals
- Grain boundary segregation and fracture
- Notifications/Mitteilungen
- Personal/Personelles
- Press/Presse
- Conferences/Konferenzen
Artikel in diesem Heft
- Frontmatter
- Editorial
- Editorial
- Articles Basic
- Thermodynamics of grain boundary adsorption in binary systems with limited solubility
- Microstructural characteristics of 3-d networks
- On the three-dimensional twin-limited microstructure
- Grain growth kinetics in 2D polycrystals: impact of triple junctions
- Thermal stability of polycrystalline nanowires
- Conservative motion of parent-martensite interfaces
- Enthalpy – entropy compensation effect in grain boundary phenomena
- Thermodynamic stabilization of nanocrystallinity
- On the relation between the anisotropies of grain boundary segregation and grain boundary energy
- Influence of faceting-roughening on triple-junction migration in zinc
- The influence of triple junction kinetics on the evolution of polycrystalline materials during normal grain growth: New evidence from in-situ experiments using columnar Al foil
- Grain boundary dynamics and selective grain growth in non-ferromagnetic metals in high magnetic fields
- Grain boundary mobility under a stored-energy driving force: a comparison to curvature-driven boundary migration
- Diffusional behavior of nanoscale lead inclusions in crystalline aluminum
- Quantitative experiments on the transition between linear to non-linear segregation of Ag in Cu bicrystals studied by radiotracer grain boundary diffusion
- Room-temperature grain boundary diffusion data measured from historical artifacts
- Solid state infiltration of porous steel with aluminium by the forcefill process
- A mechanism of plane matching boundary-assisted α/γ phase transformation in Fe–Cr alloy based on in-situ observations
- Fast penetration of Ga in Al: liquid metal embrittlement near the threshold of grain boundary wetting
- High-pressure effect on grain boundary wetting in aluminium bicrystals
- Grain boundary segregation and fracture
- Notifications/Mitteilungen
- Personal/Personelles
- Press/Presse
- Conferences/Konferenzen
