What do you mean by liquidus and solidus in phase diagram?

Liquidus – The line separating the field of all liquid from that of liquid plus crystals. Solidus – The line separating the field of all solid from that of liquid plus crystals. Eutectic point – the point on a phase diagram where the maximum number of allowable phases are in equilibrium.

What is the meaning of liquidus?

noun Physical Chemistry. (on a graph of temperature versus composition) the curve connecting the temperatures at which a liquid solution is in equilibrium with its vapor and with the solid solution.

What is solvus solidus?

Definition of solvus : a curve on a temperature-composition diagram indicating the limits of solubility of one solid phase in another — compare liquidus, solid solution, solidus.

What is liquidus in geology?

The liquidus temperature, TL or Tliq, specifies the temperature above which a material is completely liquid, and the maximum temperature at which crystals can co-exist with the melt in thermodynamic equilibrium. It is mostly used for impure substances (mixtures) such as glasses, alloys and rocks.

What is the solidus geology?

Definition. In chemistry and geology, a solidus is the set of temperatures below which a substance is completely solid or crystallized. The solidus defines the temperature at which a substance begins to melt, but not necessarily when the substance is completely melted. A solidus may be contrasted with a liquidus.

What is liquidus solidus line?

In particular, the solidus line defines the temperature below which the phases in the diagram are solid, while the liquidus line defines the temperature above which the phases are completely liquid.

What is the region between liquidus and solidus lines?

Explanation: The intermediate region between liquidus and solidus lines is the two-phase region where liquid and solid coexists.

What is solidus in geology?

In chemistry and geology, a solidus is the set of temperatures below which a substance is completely solid or crystallized. The solidus defines the temperature at which a substance begins to melt, but not necessarily when the substance is completely melted. A solidus may be contrasted with a liquidus.

What is the solidus line geology?

The green line is called the solidus, the melting point temperature of the rock at that pressure.

What is liquidus surface?

use in igneous petrology. In mineral: Use in igneous petrology. …a liquid phase are called liquidus diagrams. The dashed contours of a liquidus diagram, called isotherms, represent temperatures at which a mineral melts. They define what is known as a liquidus surface.