A cooling curve is a line graph that represents the change of phase of matter, typically from a gas to a solid or a liquid to a solid. The independent variable (X-axis) is time and the dependent variable (Y-axis) is temperature.[1] Below is an example of a cooling curve used in castings.
A cooling curve of naphthalene from liquid to solid.
The initial point of the graph is the starting temperature of the matter, here noted as the "pouring temperature". When the phase change occurs, there is a "thermal arrest"; that is, the temperature stays constant. This is because the matter has more internal energy as a liquid or gas than in the state that it is cooling to. The amount of energy required for a phase change is known as latent heat. The "cooling rate" is the slope of the cooling curve at any point.
Alloy have range of melting point. It solidifies as above. First, molten alloy reaches to liquidus temperature and then freezing range starts. At solidus temperature, molten alloys becomes solid.
Referencesedit
^Garland, Nibler, and Shoemaker. Experiments in Physical Chemistry (7th ed.)
This thermodynamics-related article is a stub. You can help Wikipedia by expanding it.
cooling, curve, this, article, needs, additional, citations, verification, please, help, improve, this, article, adding, citations, reliable, sources, unsourced, material, challenged, removed, find, sources, news, newspapers, books, scholar, jstor, december, 2. This article needs additional citations for verification Please help improve this article by adding citations to reliable sources Unsourced material may be challenged and removed Find sources Cooling curve news newspapers books scholar JSTOR December 2007 Learn how and when to remove this message A cooling curve is a line graph that represents the change of phase of matter typically from a gas to a solid or a liquid to a solid The independent variable X axis is time and the dependent variable Y axis is temperature 1 Below is an example of a cooling curve used in castings A cooling curve of naphthalene from liquid to solid The initial point of the graph is the starting temperature of the matter here noted as the pouring temperature When the phase change occurs there is a thermal arrest that is the temperature stays constant This is because the matter has more internal energy as a liquid or gas than in the state that it is cooling to The amount of energy required for a phase change is known as latent heat The cooling rate is the slope of the cooling curve at any point Alloy have range of melting point It solidifies as above First molten alloy reaches to liquidus temperature and then freezing range starts At solidus temperature molten alloys becomes solid References edit Garland Nibler and Shoemaker Experiments in Physical Chemistry 7th ed nbsp This thermodynamics related article is a stub You can help Wikipedia by expanding it vte nbsp This article about statistical mechanics is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Cooling curve amp oldid 1218860756, wikipedia, wiki, book, books, library,
