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GB1254739A - Arc-image zone refining furnace - Google Patents

Arc-image zone refining furnace

Info

Publication number
GB1254739A
GB1254739A GB4552869A GB4552869A GB1254739A GB 1254739 A GB1254739 A GB 1254739A GB 4552869 A GB4552869 A GB 4552869A GB 4552869 A GB4552869 A GB 4552869A GB 1254739 A GB1254739 A GB 1254739A
Authority
GB
United Kingdom
Prior art keywords
rod
arc
refining furnace
image zone
zone refining
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
GB4552869A
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Publication of GB1254739A publication Critical patent/GB1254739A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C30B13/22—Heating of the molten zone by irradiation or electric discharge
    • C30B13/24—Heating of the molten zone by irradiation or electric discharge using electromagnetic waves
    • 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
    • C30B13/22—Heating of the molten zone by irradiation or electric discharge

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Liquid Deposition Of Substances Of Which Semiconductor Devices Are Composed (AREA)
  • Control Of Resistance Heating (AREA)

Abstract

1,254,739. Zone-melting. MATSUSHITA ELECTRIC INDUSTRIAL CO. Ltd. 16 Sept., 1969 [17 Sept., 1968], No. 45528/69. Heading B1S. [Also in Division H5] In the passage through a rotating refractory rod 13 of a molten zone 15 formed by focusing heat from an arc lamp 11 by means of an ellipsoidal mirror 12 at a point 14 on the surface of the rod, a rod having adiameter greater than 8mm is treated by refocusing the heat by means of a spherical mirror at a point 15 on the opposite surface of the rod.
GB4552869A 1968-09-17 1969-09-16 Arc-image zone refining furnace Expired GB1254739A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6803568A JPS5016287B1 (en) 1968-09-17 1968-09-17

Publications (1)

Publication Number Publication Date
GB1254739A true GB1254739A (en) 1971-11-24

Family

ID=13362125

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4552869A Expired GB1254739A (en) 1968-09-17 1969-09-16 Arc-image zone refining furnace

Country Status (5)

Country Link
JP (1) JPS5016287B1 (en)
DE (1) DE1946678B2 (en)
FR (1) FR2018249A1 (en)
GB (1) GB1254739A (en)
NL (1) NL139466B (en)

Also Published As

Publication number Publication date
NL139466B (en) 1973-08-15
NL6913996A (en) 1970-03-19
FR2018249A1 (en) 1970-05-29
DE1946678B2 (en) 1972-09-07
DE1946678A1 (en) 1970-04-02
JPS5016287B1 (en) 1975-06-12

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