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GB234449A - Improved process for the manufacture of large crystals - Google Patents

Improved process for the manufacture of large crystals

Info

Publication number
GB234449A
GB234449A GB5741/25A GB574125A GB234449A GB 234449 A GB234449 A GB 234449A GB 5741/25 A GB5741/25 A GB 5741/25A GB 574125 A GB574125 A GB 574125A GB 234449 A GB234449 A GB 234449A
Authority
GB
United Kingdom
Prior art keywords
vessel
stem
large crystals
point
manufacture
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
GB5741/25A
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.)
General Electric Co PLC
Original Assignee
General Electric Co 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
Application filed by General Electric Co PLC filed Critical General Electric Co PLC
Publication of GB234449A publication Critical patent/GB234449A/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
    • C30B11/00—Single-crystal growth by normal freezing or freezing under temperature gradient, e.g. Bridgman-Stockbarger method
    • C30B11/14—Single-crystal growth by normal freezing or freezing under temperature gradient, e.g. Bridgman-Stockbarger method characterised by the seed, e.g. its crystallographic orientation

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
  • Powder Metallurgy (AREA)

Abstract

234,449. General Electric Co., Ltd., (Assignees of Patent Treuhand Ges. fiir Elektrische Gl³hlampen). May 26, 1924, [Convention date]. Metals, powdered, obtaining coherent masses from.- Large crystals of a metal are prepared by packing the metal powder into a vessel a of the size of the desired crystal, the vessel being reduced at one end to a thin tubular stem c, and heating the vessel progressively from the end of the stem to a temperature above the melting-point of the material. To assist the initial fusing, the stem c may be drawn out to a point The vessel a may be passed through a furnace chamber d, the stem portion leaving the furnace first-
GB5741/25A 1924-05-26 1925-03-02 Improved process for the manufacture of large crystals Expired GB234449A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE234449X 1924-05-26

Publications (1)

Publication Number Publication Date
GB234449A true GB234449A (en) 1925-12-31

Family

ID=5891568

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5741/25A Expired GB234449A (en) 1924-05-26 1925-03-02 Improved process for the manufacture of large crystals

Country Status (1)

Country Link
GB (1) GB234449A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1102103B (en) * 1958-04-30 1961-03-16 Bosch Gmbh Robert Process for the production of single crystals and device for carrying out the process
DE1135863B (en) * 1957-06-22 1962-09-06 Philips Nv Process for the production of single crystals
DE1138376B (en) * 1960-06-18 1962-10-25 Telefunken Patent Device for the production of single crystals
US4153469A (en) * 1977-03-29 1979-05-08 Alexandrov Vladimir I Monocrystals based on stabilized zirconium or hafnium dioxide and method of production thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1135863B (en) * 1957-06-22 1962-09-06 Philips Nv Process for the production of single crystals
DE1102103B (en) * 1958-04-30 1961-03-16 Bosch Gmbh Robert Process for the production of single crystals and device for carrying out the process
DE1138376B (en) * 1960-06-18 1962-10-25 Telefunken Patent Device for the production of single crystals
US4153469A (en) * 1977-03-29 1979-05-08 Alexandrov Vladimir I Monocrystals based on stabilized zirconium or hafnium dioxide and method of production thereof

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