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GB913822A - Process and apparatus for the manufacture of shaped structures - Google Patents

Process and apparatus for the manufacture of shaped structures

Info

Publication number
GB913822A
GB913822A GB1148759A GB1148759A GB913822A GB 913822 A GB913822 A GB 913822A GB 1148759 A GB1148759 A GB 1148759A GB 1148759 A GB1148759 A GB 1148759A GB 913822 A GB913822 A GB 913822A
Authority
GB
United Kingdom
Prior art keywords
liquid
substance
crystallized
chloride
molten zone
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
GB1148759A
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.)
Wacker Chemie AG
Original Assignee
Wacker Chemie 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 Wacker Chemie AG filed Critical Wacker Chemie AG
Publication of GB913822A publication Critical patent/GB913822A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C30CRYSTAL GROWTH
    • C30BSINGLE-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
    • C30B29/00Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape
    • C30B29/02Elements
    • C30B29/06Silicon
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J6/00Heat treatments such as Calcining; Fusing ; Pyrolysis
    • B01J6/005Fusing
    • CCHEMISTRY; METALLURGY
    • C30CRYSTAL GROWTH
    • C30BSINGLE-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
    • C30B11/00Single-crystal growth by normal freezing or freezing under temperature gradient, e.g. Bridgman-Stockbarger method
    • C30B11/04Single-crystal growth by normal freezing or freezing under temperature gradient, e.g. Bridgman-Stockbarger method adding crystallising materials or reactants forming it in situ to the melt
    • C30B11/08Single-crystal growth by normal freezing or freezing under temperature gradient, e.g. Bridgman-Stockbarger method adding crystallising materials or reactants forming it in situ to the melt every component of the crystal composition being added during the crystallisation
    • C30B11/10Solid or liquid components, e.g. Verneuil method
    • CCHEMISTRY; METALLURGY
    • C30CRYSTAL GROWTH
    • C30BSINGLE-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
    • C30B13/00Single-crystal growth by zone-melting; Refining by zone-melting
    • CCHEMISTRY; METALLURGY
    • C30CRYSTAL GROWTH
    • C30BSINGLE-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
    • C30B15/00Single-crystal growth by pulling from a melt, e.g. Czochralski method
    • C30B15/08Downward pulling
    • CCHEMISTRY; METALLURGY
    • C30CRYSTAL GROWTH
    • C30BSINGLE-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
    • C30B27/00Single-crystal growth under a protective fluid
    • C30B27/02Single-crystal growth under a protective fluid by pulling from a melt

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)

Abstract

<PICT:0913822/III/1> A substance to be crystallized is fed laterally into a molten zone of the substance which depends from a carrier, the substance being crystallized from the molten zone on to the carrier. A shaped article, e.g. a rod, tube, or plate, may be thereby formed. The substance to be crystallized may contact the molten zone as a liquid or solid in granular or wire form. Substances specified are silicon, germanium, titanium, titanium-iron alloy, silver, sodium chloride, dinitrobenzene, and paraffin wax. Crystallization may take place in the presence of a gas and/or liquid at super- or sub-atmospheric pressure. Gases specified are argon, hydrogen (for silver), hydrogen chloride, and a mixture of hydrogen chloride and silicon tetrachloride (for silicon). The liquid may comprise water, dilute mineral acid, a hydrocarbon, a chlorinated hydrocarbon, an alcohol, or an alkali metal or alkaline earth metal halide. Pure silicon may be produced by crystallizing in the presence of a melt consisting of sodium p chloride, potassium chloride, and potassium fluoride. Germanium may be crystallized in the presence of a melt consisting of sodium chloride, potassium chloride, and phosphorus trichloride thereby producing n-conductive germanium containing phosphorus. Crystallization may take place in a bath of the liquid or the liquid may be added with the substance being crystallized. The nature of the liquid may be changed during crystallization in order to change the shape of the article being crystallized. The liquid may be renewed to prevent concentration of impurities. The stability of the molten zone may be increased by means of an alternating current-supporting field. Heat may be supplied by the surrounding liquid, hot gas, e.g. nitrogen, electric induction, electromagnetic radiation, electron- or ion-bombardment, energy from atomic recombination, or an electric arc. As shown granules 5 of a substance are supplied to a molten zone 4 depending from a tube 2 of the substance held in a vessel 1 having an infra red heater 4 and gas outlet 6.
GB1148759A 1958-04-03 1959-04-03 Process and apparatus for the manufacture of shaped structures Expired GB913822A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEW23099A DE1088923B (en) 1958-04-03 1958-04-03 Process for the production of crystalline bodies
DEW25150A DE1109143B (en) 1958-04-03 1959-03-04 Process for producing shaped crystalline bodies

Publications (1)

Publication Number Publication Date
GB913822A true GB913822A (en) 1962-12-28

Family

ID=26002249

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1148759A Expired GB913822A (en) 1958-04-03 1959-04-03 Process and apparatus for the manufacture of shaped structures

Country Status (5)

Country Link
CH (1) CH395025A (en)
DE (2) DE1088923B (en)
FR (1) FR1219626A (en)
GB (1) GB913822A (en)
NL (1) NL237618A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1181669B (en) 1958-06-03 1964-11-19 Wacker Chemie Gmbh Process for the production of solid connections or alloys
DE1216257B (en) * 1960-08-18 1966-05-12 Kempten Elektroschmelz Gmbh Process for the production of single crystals
US4968380A (en) * 1989-05-24 1990-11-06 Mobil Solar Energy Corporation System for continuously replenishing melt

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH286404A (en) * 1943-09-21 1952-10-31 Linde Air Prod Co A method of manufacturing a synthetic gem body crystallizing in the isometric system and a body obtained by this method.
NL89230C (en) * 1952-12-17 1900-01-01
AT194444B (en) * 1953-02-26 1958-01-10 Siemens Ag Method and device for treating an elongated semiconductor crystal arrangement
NL87293C (en) * 1954-02-24

Also Published As

Publication number Publication date
CH395025A (en) 1965-07-15
NL237618A (en)
DE1088923B (en) 1960-09-15
FR1219626A (en) 1960-05-18
DE1109143B (en) 1961-06-22

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