42 phase diagram lever rule
In chemistry, the lever rule is a formula used to determine the mole fraction ( xi) or the mass fraction ( wi) of each phase of a binary equilibrium phase diagram. It can be used to determine the fraction of liquid and solid phases for a given binary composition and temperature that is between the liquidus and solidus line. Applies the lever rule to a solid-liquid mixture to determine the fraction of each phase in equilibrium and explains the basis for the lever rule. Made by fa... Lever Rule. Lever rule: An expression of conservation of matter in which the relative phase amounts are determined from the overall alloy composition and the coexisting phase compositions, assumed to be in global equilibrium at each temperature. From: Methods for Phase Diagram Determination, 2007. Related terms: Eutectics; Ferrite; Solidification Phase diagram lever rule