GB889615A - Method and apparatus for processing metals - Google Patents

Method and apparatus for processing metals

Info

Publication number
GB889615A
GB889615A GB37764/57A GB3776457A GB889615A GB 889615 A GB889615 A GB 889615A GB 37764/57 A GB37764/57 A GB 37764/57A GB 3776457 A GB3776457 A GB 3776457A GB 889615 A GB889615 A GB 889615A
Authority
GB
United Kingdom
Prior art keywords
zone
processing metals
dysprosium
praseodymium
ingots
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
GB37764/57A
Inventor
Henley Frank Sterling
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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
Priority to NL239559D priority Critical patent/NL239559A/xx
Priority to NL113928D priority patent/NL113928C/xx
Priority to NL236919D priority patent/NL236919A/xx
Priority to NL114078D priority patent/NL114078C/xx
Priority to NL225605D priority patent/NL225605A/xx
Priority to NL233434D priority patent/NL233434A/xx
Priority to NL237042D priority patent/NL237042A/xx
Priority to US3172734D priority patent/US3172734A/en
Priority claimed from GB7540/57A external-priority patent/GB827676A/en
Priority claimed from GB3627257A external-priority patent/GB871156A/en
Application filed by Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB37764/57A priority patent/GB889615A/en
Priority to CH5587358A priority patent/CH385794A/en
Priority to DEI14490A priority patent/DE1164982B/en
Priority to BE565404D priority patent/BE565404A/xx
Priority to FR1192712D priority patent/FR1192712A/en
Priority claimed from GB829558A external-priority patent/GB871157A/en
Priority claimed from GB949458A external-priority patent/GB875592A/en
Priority claimed from GB18772/58A external-priority patent/GB899287A/en
Priority to CH6623558A priority patent/CH416572A/en
Priority to FR779514A priority patent/FR74804E/en
Priority to DEI15671A priority patent/DE1191970B/en
Priority to CH6663958A priority patent/CH435757A/en
Priority to FR780733A priority patent/FR75035E/en
Priority to BE573570A priority patent/BE573570R/en
Priority to DEI16140A priority patent/DE1293934B/en
Priority to FR789174A priority patent/FR75328E/en
Priority to FR790411A priority patent/FR75516E/en
Priority to DEI16553A priority patent/DE1226539B/en
Priority to FR797107A priority patent/FR75871E/en
Priority to US92051A priority patent/US3140922A/en
Publication of GB889615A publication Critical patent/GB889615A/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
    • H05B6/22—Furnaces without an endless core
    • H05B6/32—Arrangements for simultaneous levitation and heating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J6/00—Heat treatments such as Calcining; Fusing ; Pyrolysis
    • B01J6/005—Fusing
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B33/00—Silicon; Compounds thereof
    • C01B33/02—Silicon
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B33/00—Silicon; Compounds thereof
    • C01B33/02—Silicon
    • C01B33/021—Preparation
    • C01B33/027—Preparation by decomposition or reduction of gaseous or vaporised silicon compounds other than silica or silica-containing material
    • C01B33/029—Preparation by decomposition or reduction of gaseous or vaporised silicon compounds other than silica or silica-containing material by decomposition of monosilane
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B35/00—Boron; Compounds thereof
    • C01B35/02—Boron; Borides
    • C01B35/023—Boron
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B34/00—Obtaining refractory metals
    • C22B34/10—Obtaining titanium, zirconium or hafnium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B4/00—Electrothermal treatment of ores or metallurgical products for obtaining metals or alloys
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B41/00—Obtaining germanium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B60/00—Obtaining metals of atomic number 87 or higher, i.e. radioactive metals
    • C22B60/02—Obtaining thorium, uranium, or other actinides
    • C22B60/0204—Obtaining thorium, uranium, or other actinides obtaining uranium
    • C22B60/0286—Obtaining thorium, uranium, or other actinides obtaining uranium refining, melting, remelting, working up uranium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
    • C22B9/02—Refining by liquating, filtering, centrifuging, distilling, or supersonic wave action including acoustic 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
    • C30B13/14—Crucibles or vessels
    • 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
    • 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
    • C30B13/18—Heating of the molten zone the heating element being in contact with, or immersed in, the molten zone
    • 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
    • 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
    • C30B15/00—Single-crystal growth by pulling from a melt, e.g. Czochralski method
    • C30B15/10—Crucibles or containers for supporting the melt
    • 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
    • C30B15/00—Single-crystal growth by pulling from a melt, e.g. Czochralski method
    • C30B15/14—Heating of the melt or the crystallised materials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces
    • F27B3/08—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces heated electrically, with or without any other source of heat
    • F27B3/085—Arc furnaces
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S117/00—Single-crystal, oriented-crystal, and epitaxy growth processes; non-coating apparatus therefor
    • Y10S117/90—Apparatus characterized by composition or treatment thereof, e.g. surface finish, surface coating
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T117/00—Single-crystal, oriented-crystal, and epitaxy growth processes; non-coating apparatus therefor
    • Y10T117/10—Apparatus
    • Y10T117/1024—Apparatus for crystallization from liquid or supercritical state
    • Y10T117/1076—Apparatus for crystallization from liquid or supercritical state having means for producing a moving solid-liquid-solid zone
    • Y10T117/108—Including a solid member other than seed or product contacting the liquid [e.g., crucible, immersed heating element]

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Geology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Electromagnetism (AREA)
  • Acoustics & Sound (AREA)
  • General Engineering & Computer Science (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Thermal Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Liquid Deposition Of Substances Of Which Semiconductor Devices Are Composed (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Silicon Compounds (AREA)

Abstract

A metal is zone-melted directly by induction in a water-cooled silver crucible. Steel, hafnium, molybdenum, tungsten, and tantalum may be zone-refined. Small pieces of uranium, zirconium, titanium, nickel, iron, aluminium, gadolinium, praseodymium, dysprosium, and yttrium may be formed into ingots.
GB37764/57A 1957-03-07 1957-12-04 Method and apparatus for processing metals Expired GB889615A (en)

Priority Applications (25)

Application Number Priority Date Filing Date Title
NL239559D NL239559A (en) 1957-03-07
NL113928D NL113928C (en) 1957-03-07
NL236919D NL236919A (en) 1957-03-07
NL114078D NL114078C (en) 1957-03-07
NL225605D NL225605A (en) 1957-03-07
NL233434D NL233434A (en) 1957-03-07
NL237042D NL237042A (en) 1957-03-07
US3172734D US3172734A (en) 1957-03-07 warren
GB37764/57A GB889615A (en) 1957-03-07 1957-12-04 Method and apparatus for processing metals
CH5587358A CH385794A (en) 1957-03-07 1958-02-15 Process for the treatment of fusible material
DEI14490A DE1164982B (en) 1957-03-07 1958-03-04 Device for cleaning semiconductor material
FR1192712D FR1192712A (en) 1957-03-07 1958-03-05 High purity silicon production method
BE565404D BE565404A (en) 1957-03-07 1958-03-05
CH6623558A CH416572A (en) 1957-03-07 1958-11-17 Process for the production of single crystals from semiconductor material
FR779514A FR74804E (en) 1957-03-07 1958-11-19 High purity silicon production method
DEI15671A DE1191970B (en) 1957-03-07 1958-11-24 Device for melting treatment of metals
CH6663958A CH435757A (en) 1957-03-07 1958-11-27 Process for the heat treatment of metals or metal alloys
FR780733A FR75035E (en) 1957-03-07 1958-12-03 High purity silicon production method
BE573570A BE573570R (en) 1957-12-04 1958-12-04 Method and apparatus for the heat treatment of semiconductor products.
FR789174A FR75328E (en) 1957-03-07 1959-03-12 High purity silicon production method
DEI16140A DE1293934B (en) 1957-03-07 1959-03-12 Zone melting of difficult to melt material
FR790411A FR75516E (en) 1957-03-07 1959-03-24 High purity silicon production method
DEI16553A DE1226539B (en) 1957-03-07 1959-06-10 Crucibles for melting and zone melting of semiconductor material
FR797107A FR75871E (en) 1957-03-07 1959-06-10 High purity silicon production method
US92051A US3140922A (en) 1957-03-07 1961-02-27 Methods and apparatus for treating reactive materials

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
GB7540/57A GB827676A (en) 1957-03-07 1957-03-07 Method and apparatus for heat treating semi-conductor material
GB3627257A GB871156A (en) 1957-11-21 1957-11-21 Improvements in or relating to growing monocrystals of semiconductor material
GB37764/57A GB889615A (en) 1957-03-07 1957-12-04 Method and apparatus for processing metals
GB829558A GB871157A (en) 1958-03-14 1958-03-14 Improvements in or relating to apparatus for processing fusible materials
GB949458A GB875592A (en) 1958-03-25 1958-03-25 Improvements in or relating to methods and apparatus for melting materials
GB18772/58A GB899287A (en) 1958-06-12 1958-06-12 Method and apparatus for heat treating fusible material

Publications (1)

Publication Number Publication Date
GB889615A true GB889615A (en) 1962-02-21

Family

ID=27546551

Family Applications (1)

Application Number Title Priority Date Filing Date
GB37764/57A Expired GB889615A (en) 1957-03-07 1957-12-04 Method and apparatus for processing metals

Country Status (7)

Country Link
US (1) US3172734A (en)
BE (1) BE565404A (en)
CH (3) CH385794A (en)
DE (4) DE1164982B (en)
FR (1) FR1192712A (en)
GB (1) GB889615A (en)
NL (7) NL237042A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3796548A (en) * 1971-09-13 1974-03-12 Ibm Boat structure in an apparatus for making semiconductor compound single crystals
FR2512066B1 (en) * 1981-09-03 1986-05-16 Cogema METHOD FOR THE PHYSICAL SEPARATION OF A METAL PHASE AND SLAGS IN AN INDUCTION OVEN

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE518499C (en) * 1926-11-02 1931-02-16 Siemens & Halske Akt Ges Process for melting refractory metals, in particular tantalum, tungsten, thorium or alloys of these metals in a water-cooled container
DE536300C (en) * 1929-09-04 1931-10-22 Hirsch Kupfer Und Messingwerke Method and device for operating electric induction ovens
DE903266C (en) * 1941-04-05 1954-02-04 Aeg Electric induction furnace for melting magnesium and its alloys
US2541764A (en) * 1948-04-15 1951-02-13 Battelle Development Corp Electric apparatus for melting refractory metals
US2768074A (en) * 1949-09-24 1956-10-23 Nat Res Corp Method of producing metals by decomposition of halides
US2686865A (en) * 1951-10-20 1954-08-17 Westinghouse Electric Corp Stabilizing molten material during magnetic levitation and heating thereof
BE510303A (en) * 1951-11-16
US2785058A (en) * 1952-04-28 1957-03-12 Bell Telephone Labor Inc Method of growing quartz crystals
DE968582C (en) * 1952-08-07 1958-03-06 Telefunken Gmbh Process for the preparation of a melt of a material which is semiconducting at ordinary temperature
US2719799A (en) * 1952-11-13 1955-10-04 Rca Corp Zone melting furnace and method of zone melting
GB734973A (en) * 1953-04-30 1955-08-10 Gen Electric Co Ltd Improvements in or relating to fractional fusion methods
NL107897C (en) * 1953-05-18
DE975708C (en) * 1953-08-12 1962-06-14 Standard Elek K Lorenz Ag Evaporator for the evaporation of metals, especially in a high vacuum
US2872299A (en) * 1954-11-30 1959-02-03 Rca Corp Preparation of reactive materials in a molten non-reactive lined crucible
DE1007885B (en) * 1955-07-28 1957-05-09 Siemens Ag Heating arrangement for semiconductor crystal pulling devices, which preferably work according to the melt zone process
US2836412A (en) * 1955-08-22 1958-05-27 Titanium Metals Corp Arc melting crucible
FR1141561A (en) * 1956-01-20 1957-09-04 Cedel Method and means for the manufacture of semiconductor materials
US2870309A (en) * 1957-06-11 1959-01-20 Emil R Capita Zone purification device
US2897329A (en) * 1957-09-23 1959-07-28 Sylvania Electric Prod Zone melting apparatus

Also Published As

Publication number Publication date
NL237042A (en) 1900-01-01
DE1164982B (en) 1964-03-12
NL236919A (en) 1900-01-01
US3172734A (en) 1965-03-09
NL114078C (en) 1900-01-01
CH416572A (en) 1966-07-15
NL225605A (en) 1900-01-01
BE565404A (en) 1958-09-05
DE1226539B (en) 1966-10-13
CH435757A (en) 1967-05-15
CH385794A (en) 1964-12-31
NL233434A (en) 1900-01-01
NL239559A (en) 1900-01-01
DE1191970B (en) 1965-04-29
DE1293934B (en) 1969-04-30
FR1192712A (en) 1959-10-28
NL113928C (en) 1900-01-01

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