Conduit for high temperature transfer of molten semiconductor cr

Details Conduit for high temperature transfer of molten semiconductor cr Conduit for high temperature transfer of molten semiconductor cr

1979-10-09

1983-08-02

Bartis, A.

Electric heating

Heating devices

Combined with container, enclosure, or support for material...

137341, 138140, 138149, 138153, 138177, 156617SP, 156623R, 164337, 219300, 219421, 219535, 222146HE, 222593, 428 36, 428408, H05B 344, F16L 5300, F16L 914

Patent

active

043968244

ABSTRACT:
A conduit for high temperature transfer of molten semiconductor crystalline material consists of a composite structure incorporating a quartz transfer tube as the innermost member, with an outer thermally insulating layer designed to serve the dual purposes of minimizing heat losses from the quartz tube and maintaining mechanical strength and rigidity of the conduit at the elevated temperatures encountered. The composite structure ensures that the molten semiconductor material only comes in contact with a material (quartz) with which it is compatible, while the outer layer structure reinforces the quartz tube, which becomes somewhat soft at molten semiconductor temperatures. To further aid in preventing cooling of the molten semiconductor, a distributed, electric resistance heater is in contact with the surface of the quartz tube over most of its length. The quartz tube has short end portions which extend through the surface of the semiconductor melt and which are lef bare of the thermal insulation. The heater is designed to provide an increased heat input per unit area in the region adjacent these end portions.

REFERENCES:
patent: 1572300 (1926-02-01), Max
patent: 2375563 (1945-05-01), Kirk
patent: 2459869 (1949-01-01), Christensen et al.
patent: 2606574 (1952-08-01), Lefebvre
patent: 2660769 (1953-12-01), Bennett
patent: 3093456 (1963-06-01), Runyan et al.
patent: 3495630 (1970-02-01), Hansen et al.
patent: 3499736 (1970-03-01), Zwaneburg
patent: 3815623 (1974-06-01), Farmer
patent: 3980105 (1976-09-01), Myskowski
patent: 4036595 (1977-07-01), Lorenzini et al.
patent: 4192988 (1980-03-01), Pederson
patent: 4282184 (1981-08-01), Fiegl et al.

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