Directional solidification techniques

It is also possible to produce single-crystal ingots as well as highly oriented textured polycrystalline materials (i.e., those in which the grains exhibit a preferred orientation) by directional solidification. With the Bridgman technique... 

Noimal fieezing or progressive freezing is the slow, directional solidification of a melt. Basically, this involves slow solidification at the bottom or sides of a vessel indirect cooling. The impurity is rejected into the liquid phase by the advancing solid interface. This technique can be employed to concentrate an impurity or, Iqr repeated solidifications and liquid rejection, to produce a very pure ingot. Figure 11.4>2... 

Direct Firing. The firing of pottery or vitreous enamelware in a fuel-fired kiln or furnace without protection of the ware from the products of combustion. Directional Solidification. This is a technique for preparing lamellar or fibrous composites of ceramics and/or metals by growth from a molten eutectic... 

This is a well-known technique called Directional Solidification. It was invented by Jackson and Hunt to advance industrial crystal growth processes [5]. Improvements in our setup, compared to their original one, include several computer controled stepping motors and image processing software. 

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