Apparatus for growing a dendritic web

Patent · Tue Jun 21 04:00:00 EDT 1983

OSTI ID:864584

Duncan, Charles S ^[1]; Piotrowski, Paul A ^[2]; Skutch, Maria E ^[3]; McHugh, James P ^[1]

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1. Pittsburgh, PA
2. Monroeville, PA
3. Trafford, PA

A melt system including a susceptor-crucible assembly having improved gradient control when melt replenishment is used during dendritic web growth. The improvement lies in the formation of a thermal barrier in the base of the receptor which is in the form of a vertical slot in the region of the susceptor underlying the crucible at the location of a compartmental separator dividing the crucible into a growth compartment and a melt replenishment compartment. The result achieved is a step change in temperature gradient in the melt thereby providing a more uniform temperature in the growth compartment from which the dendritic web is drawn.

• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4389377
• Application Number: 06/282,334
• OSTI ID: 864584
• Country of Publication: United States
• Language: English

Related Subjects

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achieved
apparatus
assembly
barrier
base
change
compartment
compartmental
control
crucible
dendritic
dendritic web
dividing
drawn
form
formation
gradient
gradient control
growing
growth
improved
improvement
including
lies
location
melt
providing
receptor
region
replenishment
result
separator
slot
step
susceptor
susceptor-crucible
temperature
temperature gradient
thermal
thermal barrier
underlying
uniform
uniform temperature
vertical
vertical slot
web
web growth