| 词汇 | eutectic |
| 释义 | BETA Examples of eutecticeutectic isn’t in the Cambridge Dictionary yet. You can help! The minimum freezing temperature, below which the alloy is completely solid, is called the eutectic temperature. This corresponds to the stage when the melt had ceased to convect vigorously and its composition had become close to eutectic. The eutectic point defines the composition of the melt at the minimum temperature at which, under thermodynamic equilibrium, it is in the liquid state. Most probably, the two glass sheets containing the eutectic solution were cast and unpolished, making the walls at most semitransparent. Here we extend the study by investigating the effects that arise when the cooling temperature is less than the eutectic temperature. First melting is difficult to observe and may not be noticed until a temperature above the true eutectic point. Further down the solid, a band of more homogeneous, eutectic solid has formed. The eutectic temperature of the water-isopropanol system is unknown to us. They also introduced and analysed a model for the growth of solid of eutectic composition. Consequently, when the roof temperature is maintained at a temperature less than the eutectic, the solid that forms above the mushy layer is compositionally zoned. In almost all such cases of practical interest, the melt is solidified totally by cooling it below its eutectic temperature. This solid layer forms above a partially solidified zone, called a mushy layer, in the region where the local temperature is less than the eutectic temperature. The composition of the final solid product decreases with depth from the initial composition of the melt towards the eutectic composition, until reaching the basal solid layer. In this paper we only consider cases in which the cooled boundary has a temperature above the eutectic temperature and so the system will always be only partially solidified. Such a mixture of solid particles in a molten eutectic is referred to as a mushy state. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Reactor salts are usually close to eutectic mixtures to reduce their melting point. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Because of this, when a peritectic composition solidifies it does not show the lamellar structure that is found with eutectic solidification. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Sometimes eutectic was sprinkled between the layers to increase the bond. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Eutectic alloys are deposited by sputtering, dual source evaporation or electroplating. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. |
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