GB1027954A - A method of zone-by-zone melting a rod - Google Patents

A method of zone-by-zone melting a rod

Info

Publication number
GB1027954A
GB1027954A GB371665A GB371665A GB1027954A GB 1027954 A GB1027954 A GB 1027954A GB 371665 A GB371665 A GB 371665A GB 371665 A GB371665 A GB 371665A GB 1027954 A GB1027954 A GB 1027954A
Authority
GB
United Kingdom
Prior art keywords
rod
high frequency
zone
sec
capacitor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB371665A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens Schuckertwerke AG
Siemens AG
Original Assignee
Siemens Schuckertwerke AG
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens Schuckertwerke AG, Siemens AG filed Critical Siemens Schuckertwerke AG
Publication of GB1027954A publication Critical patent/GB1027954A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41C—CORSETS; BRASSIERES
    • A41C1/00—Corsets or girdles
    • A41C1/06—Corsets or girdles with brassieres
    • C—CHEMISTRY; METALLURGY
    • C30—CRYSTAL GROWTH
    • C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
    • C30B13/00—Single-crystal growth by zone-melting; Refining by zone-melting
    • C30B13/16—Heating of the molten zone
    • C30B13/20—Heating of the molten zone by induction, e.g. hot wire technique

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Textile Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Silicon Compounds (AREA)
  • Corsets Or Brassieres (AREA)

Abstract

A rod of silicon having a diameter of up to 40 mm. is zone-melted using an induction coil through which is passed a high frequency heating current of 2-6 mc/sec. and a high frequency shaping current of 500 c/sec. to 500 kc/sec. The initial rod may be produced by deposition of silicon from a gaseous compound on to a silicon core and may be fused to a monocrystalline seed of smaller diameter. The rod may be preheated by resistance or radiant heating. According to Fig. 2 (not shown) a tank circuit comprising a capacitor 11 and an induction coil 3 is connected to a high frequency generator supplying heating current through a capacitor 16 and a terminal 12, the other terminal being earthed, and is also connected to a high frequency generator supplying shaping current through a choke 13 and terminals 15 bridged by a capacitor 14.
GB371665A 1964-02-08 1965-01-27 A method of zone-by-zone melting a rod Expired GB1027954A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES0089438 1964-02-08

Publications (1)

Publication Number Publication Date
GB1027954A true GB1027954A (en) 1966-05-04

Family

ID=7515112

Family Applications (2)

Application Number Title Priority Date Filing Date
GB371665A Expired GB1027954A (en) 1964-02-08 1965-01-27 A method of zone-by-zone melting a rod
GB538065A Expired GB1102291A (en) 1964-02-08 1965-02-08 Improvements in the manufacture of corsets and the like

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB538065A Expired GB1102291A (en) 1964-02-08 1965-02-08 Improvements in the manufacture of corsets and the like

Country Status (3)

Country Link
BE (1) BE659251A (en)
CH (1) CH413786A (en)
GB (2) GB1027954A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4900887A (en) * 1986-05-16 1990-02-13 Siemens Aktiengesellschaft Floating zone drawing circuitry for semiconductor rods

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4900887A (en) * 1986-05-16 1990-02-13 Siemens Aktiengesellschaft Floating zone drawing circuitry for semiconductor rods

Also Published As

Publication number Publication date
BE659251A (en) 1965-08-04
CH413786A (en) 1966-05-31
GB1102291A (en) 1968-02-07

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