Reversing radial segregation and suppressing morphological instability during vertical Bridgman crystal growth by rotation
Resource
Journal of Crystal Growth 235(2002), 619–625
Journal
Journal of Crystal Growth
Pages
-
Date Issued
2002
Date
2002
Author(s)
Lan, C.W.
Yang, Y.W.
Tu, C.Y.
DOI
246246/2006111501233464
Abstract
During vertical Bridgman growth of an alloy crystal, local accumulation of solute at the interface center due to
buoyancy often causes formation of a deep depression or pit and accelerates morphological instability. Through
visualization of the freezing interface during directional solidification of succinonitrile containing ethanol on a rotating
table, it was shown that rotation about the ampoule axis might reverse solute distribution and remove pit formation.
Simulation was also conducted to explain the observations.
Subjects
A1. Centrifugal force
A1. Convection
A1. Interface
A1. Rotation
A1. Segregation
A2. Bridgman method
Publisher
Taipei:National Taiwan University Dept Chem Engn
Type
journal article
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