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Cooling curve

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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
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Alloys have a melting point range. It solidifies as shown in the figure above. First, the molten alloy reaches to liquidus temperature and then freezing range starts. At solidus temperature, the molten alloy becomes solid.
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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
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Garland, Nibler, and Shoemaker. Experiments in Physical Chemistry (7th ed.)
172: 220: 630: 524: 436: 184: 164:(Y-axis) is temperature. Below is an example of a cooling curve used in 569: 544: 471: 441: 375: 354: 191: 187:. The "cooling rate" is the slope of the cooling curve at any point. 304: 35: 706: 534: 145: 666: 554: 489: 406: 401: 165: 132: 275: 153: 156:, typically from a gas to a solid or a liquid to a solid. The 284: 270: 280: 136:
A cooling curve of naphthalene from liquid to solid.
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Index

Thermal arrest

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phase
matter
independent variable
dependent variable
castings

internal energy
latent heat

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States of matter
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Solid
Liquid

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