2. Thermodynamic principles of phase equilibrium
2.1 Thermodynamic definition of phase equilibrium
In thermodynamics, a closed system is defined as a certain quantity of matter with a constant number of moles of each constituent pure substance. The definition of chemical constituents is tricky for some systems, where chemical reactions can modify the list of pure bodies actually present in the system. But in the case of alloys, the definition of constituents is unambiguous: each chemical element in the system represents a constituent. Indeed, in many metallic phases, the structural entity is the atom, even if in some cases there are more complex entities with strong internal bonds.
The closed system is bounded by a system contour, the permeability of which must be defined with respect to exchanges with the outside....
Exclusive to subscribers. 97% yet to be discovered!
Already subscribed? Log in!
Thermodynamic principles of phase equilibrium
Gibbs phase rule and lever arm rule
Article included in this offer
"Studies and properties of metals"
(
172 articles
)
Updated and enriched with articles validated by our scientific committees
A set of exclusive tools to complement the resources
Diagram classification
In this folder, the diagrams are arranged in alphabetical order of the symbol of the element concerned, which comes first in alphabetical order among the elements making up the alloy; then, for a given element, in alphabetical order of the symbol of the second element.
Example
we find Fe-C to C-Fe.
...
Exclusive to subscribers. 97% yet to be discovered!
Already subscribed? Log in!
