Browse Prior Art Database

RF Coil as a Crucible in a Cold Boat Reclamation or Crystal Growing System

IP.com Disclosure Number: IPCOM000092489D
Original Publication Date: 1966-Nov-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 67K

Publishing Venue

IBM

Related People

Dessauer, RG: AUTHOR [+4]

Abstract

RF coil 1 serves as a crucible for the zone refining of reactive materials such as silicon, germanium and titanium. The heating element and melt material are brought into intimate contact with this arrangement. RF coil 1, a hollow copper strap, is cylindrically formed, to which flanges 1a are attached to accommodate seal 7 and abutting quartz tubes 2. The latter, in conjunction with an introduced argon atmosphere 3, afford a shielding of the material from contamination during its molten state. A large quantity of water is flowed through channel 4 to cool the coil to prevent the melting of the coil, the alloying of the melt 5 with the coil and contamination of the melt 5 from the coil. The system is tilted slightly to permit the melt to flow along the water-cooled trough 6.

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RF Coil as a Crucible in a Cold Boat Reclamation or Crystal Growing System

RF coil 1 serves as a crucible for the zone refining of reactive materials such as silicon, germanium and titanium. The heating element and melt material are brought into intimate contact with this arrangement. RF coil 1, a hollow copper strap, is cylindrically formed, to which flanges 1a are attached to accommodate seal 7 and abutting quartz tubes 2. The latter, in conjunction with an introduced argon atmosphere 3, afford a shielding of the material from contamination during its molten state. A large quantity of water is flowed through channel 4 to cool the coil to prevent the melting of the coil, the alloying of the melt 5 with the coil and contamination of the melt 5 from the coil. The system is tilted slightly to permit the melt to flow along the water-cooled trough 6. As the melt 5 flows from the coil it solidifies on the trough, forming an ingot.

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