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Více informací o knize Vibrational Stirring in Bridgman Crystal Growth

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• Anotace
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Nákupem získáte 171 bodů

Anotace knihy

This PhD thesis examines a promising stirring §technique called coupled vibrational stirring (CVS) §with the aim of quantifying its effects so that it §could be applied to the Bridgman growth of §technologically important materials. CVS generated §flows were directly studied using a physical §modeling system containing water/glycerin. Sodium §nitrate was chosen as a model growth system due to §its transparent melt and solid. Lead magnesium §niobate lead titanate (PMNT) was chosen as a third §system because of its application for high §performance solid state transducers and actuators. §One of the most important results obtained was the §discovery of an axial velocity gradient decreasing §from the fluid surface. The velocity profile and §corresponding depth of fluid motion were found to be §easily tuned by changing the vibrational frequency. §When a control system was used to hold a constant §fluid velocity near the growth interface during §crystal growth, good quality crystals were produced. §By adjusting the fluid flow rate near the growth §interface, the interface shape could be controlled §at high growth rates in the sodium nitrate system.

Parametry knihy

• Plný název: Vibrational Stirring in Bridgman Crystal Growth
• Podnázev: Low-Frequency Vibrations to Control Fluid Flow
• Autor: Kevin Zawilski
• Jazyk: Angličtina
• Vazba: Brožovaná
• Počet stran: 172
• EAN: 9783639108293
• ID: 06819766
• Nakladatelství: VDM Verlag Dr. Müller
• Hmotnost: 272 g
• Rozměry: 220 × 150 × 10 mm
• Rok vydání: 2009

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