BRIDGMAN PROCESS / METHOD

 Bridgman Method / Process : Crystal Growth Method :

In Bridgman Process, the Crucible(a non-reacting container) is a Vertical Cylindrical Container, Tapered Conically with a Point Bottom, in which a Meterial to be Melted is Taken. The Material in the Crucible is Heated in a Furnance Above its Melting Point. The Melt can be Progressively Frozen By Moving the Crucible Down a Temperature Gradient or Moving the Furnance Over the Crucible. The Movement Rate Ranges From 1 - 30 mm / hr .

At the Tip the Crystallization Begins and Continues its Growth from the First Formed Nucleus. The Latent Heat of Solidification is Removed by Conduction through the Crystal and the Crucible.

Application of Bridgman Method :

A Wide Range of Substance like Metalic, Organic a Number of Dielectric Single Crystals Such as Oxides, Flurides, Sulphides and Halides Can be Grown By This Process / Technique.

Advantages Of Bridgman Method :

• The Crystal Diameter Can Be Reassigned, By Selecting The Appropriate Container.
• This is a Technically Simple Method.

Disadvantage Of Bridgman Method :

As the Molten Metal / Metal is in Contact With the Crucible Container, The Ingot May have Certain Defect at the Surfaces.