Lid for improved dendritic web growth
Abstract
A lid for a susceptor in which a crystalline material is melted by induction heating to form a pool or melt of molten material from which a dendritic web of essentially a single crystal of the material is pulled through an elongated slot in the lid and the lid has a pair of generally round openings adjacent the ends of the slot and a groove extends between each opening and the end of the slot. The grooves extend from the outboard surface of the lid to adjacent the inboard surface providing a strip contiguous with the inboard surface of the lid to produce generally uniform radiational heat loss across the width of the dendritic web adjacent the inboard surface of the lid to reduce thermal stresses in the web and facilitate the growth of wider webs at a greater withdrawal rate.
- Inventors:
-
- Penn Hills, PA
- Greentree, PA
- Monroeville, PA
- Forest Hills, PA
- Issue Date:
- OSTI Identifier:
- 868201
- Patent Number(s):
- 5098287
- Application Number:
- 07/525,205
- Assignee:
- Westinghouse Electric Corp. (Pittsburgh, PA)
- Patent Classifications (CPCs):
-
C - CHEMISTRY C30 - CRYSTAL GROWTH C30B - SINGLE-CRYSTAL-GROWTH
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- lid; improved; dendritic; web; growth; susceptor; crystalline; material; melted; induction; heating; form; pool; melt; molten; essentially; single; crystal; pulled; elongated; slot; pair; openings; adjacent; groove; extends; grooves; extend; outboard; surface; inboard; providing; strip; contiguous; produce; uniform; radiational; heat; loss; width; reduce; thermal; stresses; facilitate; wider; webs; withdrawal; rate; web growth; dendritic web; heat loss; crystalline material; thermal stress; single crystal; thermal stresses; molten material; reduce thermal; induction heating; elongated slot; /432/
Citation Formats
Duncan, Charles S, Kochka, Edgar L, Piotrowski, Paul A, and Seidensticker, Raymond G. Lid for improved dendritic web growth. United States: N. p., 1992.
Web.
Duncan, Charles S, Kochka, Edgar L, Piotrowski, Paul A, & Seidensticker, Raymond G. Lid for improved dendritic web growth. United States.
Duncan, Charles S, Kochka, Edgar L, Piotrowski, Paul A, and Seidensticker, Raymond G. Tue .
"Lid for improved dendritic web growth". United States. https://www.osti.gov/servlets/purl/868201.
@article{osti_868201,
title = {Lid for improved dendritic web growth},
author = {Duncan, Charles S and Kochka, Edgar L and Piotrowski, Paul A and Seidensticker, Raymond G},
abstractNote = {A lid for a susceptor in which a crystalline material is melted by induction heating to form a pool or melt of molten material from which a dendritic web of essentially a single crystal of the material is pulled through an elongated slot in the lid and the lid has a pair of generally round openings adjacent the ends of the slot and a groove extends between each opening and the end of the slot. The grooves extend from the outboard surface of the lid to adjacent the inboard surface providing a strip contiguous with the inboard surface of the lid to produce generally uniform radiational heat loss across the width of the dendritic web adjacent the inboard surface of the lid to reduce thermal stresses in the web and facilitate the growth of wider webs at a greater withdrawal rate.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Mar 24 00:00:00 EST 1992},
month = {Tue Mar 24 00:00:00 EST 1992}
}
Works referenced in this record:
Silicon ribbon growth by the dendritic web process
journal, September 1980
- Seidensticker, R. G.; Hopkins, R. H.
- Journal of Crystal Growth, Vol. 50, Issue 1