GB849285A - Improvements in or relating to apparatus and methods for zone melting solids - Google Patents

Improvements in or relating to apparatus and methods for zone melting solids

Info

Publication number
GB849285A
GB849285A GB1216458A GB1216458A GB849285A GB 849285 A GB849285 A GB 849285A GB 1216458 A GB1216458 A GB 1216458A GB 1216458 A GB1216458 A GB 1216458A GB 849285 A GB849285 A GB 849285A
Authority
GB
United Kingdom
Prior art keywords
coils
relating
methods
boats
boat
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
GB1216458A
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.)
Philips Electrical Industries Ltd
Original Assignee
Philips Electrical Industries Ltd
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 Philips Electrical Industries Ltd filed Critical Philips Electrical Industries Ltd
Publication of GB849285A publication Critical patent/GB849285A/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
    • H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
    • H05B6/101—Induction heating apparatus, other than furnaces, for specific applications for local heating of metal pieces
    • H05B6/103—Induction heating apparatus, other than furnaces, for specific applications for local heating of metal pieces multiple metal pieces successively being moved close to the inductor
    • 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
    • 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
    • H05B6/22—Furnaces without an endless core
    • H05B6/30—Arrangements for remelting or zone melting

Landscapes

  • Chemical & Material Sciences (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Materials Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Power Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Liquid Deposition Of Substances Of Which Semiconductor Devices Are Composed (AREA)
  • Furnace Details (AREA)
  • General Induction Heating (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)

Abstract

<PICT:0849285/III/1> Solids are zone melted in at least two chambers, each associated with at least two high-frequency heater elements, each element associated with one chamber being connected in series with an element associated with the other chamber. When semi-conductive and conductive materials are zone melted the heaters are induction coils, and when salts are treated the heaters are capacitances. Germanium rods 13 and 30 in boats 12 and 29 are moved through quartz tubes 1 and 18 under the influence of induction coils 2 to 7 and 19 to 24, in hydrogen atmospheres. The coils 2 to 7 are each connected in series with coils 19 to 24 respectively, each pair being connected to a high-frequency generator 35. When boat 12 and rod 13 are in the position shown in broken lines, boat 29 and rod 30 are as shown in tube 18 and the boats are driven at the same rate so that the generator 35 has a constant load imposed on it.
GB1216458A 1957-04-18 1958-04-16 Improvements in or relating to apparatus and methods for zone melting solids Expired GB849285A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL216537 1957-04-18

Publications (1)

Publication Number Publication Date
GB849285A true GB849285A (en) 1960-09-21

Family

ID=19750877

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1216458A Expired GB849285A (en) 1957-04-18 1958-04-16 Improvements in or relating to apparatus and methods for zone melting solids

Country Status (6)

Country Link
BE (1) BE566839A (en)
CH (1) CH376884A (en)
DE (1) DE1091987B (en)
FR (1) FR1205485A (en)
GB (1) GB849285A (en)
NL (2) NL109526C (en)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT183790B (en) * 1951-11-16 1955-11-10 Western Electric Co Process for producing a predetermined distribution of one or more secondary constituents in a fusible body

Also Published As

Publication number Publication date
NL216537A (en)
CH376884A (en) 1964-04-30
DE1091987B (en) 1960-11-03
NL109526C (en)
FR1205485A (en) 1960-02-03
BE566839A (en)

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