GB1475189A - Crystal growing techniques - Google Patents

Crystal growing techniques

Info

Publication number
GB1475189A
GB1475189A GB1965474A GB1965474A GB1475189A GB 1475189 A GB1475189 A GB 1475189A GB 1965474 A GB1965474 A GB 1965474A GB 1965474 A GB1965474 A GB 1965474A GB 1475189 A GB1475189 A GB 1475189A
Authority
GB
United Kingdom
Prior art keywords
liquid
seed crystal
stream
growth
crystal
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
GB1965474A
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.)
National Research Development Corp UK
Original Assignee
National Research Development Corp UK
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 National Research Development Corp UK filed Critical National Research Development Corp UK
Priority to GB1965474A priority Critical patent/GB1475189A/en
Publication of GB1475189A publication Critical patent/GB1475189A/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
    • C30B7/00—Single-crystal growth from solutions using solvents which are liquid at normal temperature, e.g. aqueous solutions
    • 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
    • C30B29/00—Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape
    • C30B29/54—Organic compounds

Landscapes

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

Abstract

1475189 Crystal growth NATIONAL RESEARCH DEVELOPMENT CORP 1 May 1975 [3 May 1974] 19654/74 Headings B1G and BIS A crystal growth apparatus comprises a vessel containing the crystallisation liquid, a seed crystal carrier rotatably mounted about a vertical axis and supporting a seed crystal with a single downwards facing flat face exposed for growth and a liquid guidance means in the vessel for directing a stream of liquid with a relatively small temperature gradient across the stream towards the exposed surface of the seed crystal so that the rotation of the seed directs the liquid across the seed crystal face in substantially horizontally directions, the rate of movement of the liquid stream being substantially greater than that due to convection currents in the liquid. Suitable apparatus as shown in Fig. II and comprises a seed crystal I immersed in a crystal growth solution 5 contained in vessel 6 fitted with a sintered glass disc 12 connected via pipe 11 to pump 10 which circulates a stream of solution 5. The apparatus is particularly suitable for the growth of large crystals of triglycine sulphate from aqueous solutions.
GB1965474A 1975-05-01 1975-05-01 Crystal growing techniques Expired GB1475189A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1965474A GB1475189A (en) 1975-05-01 1975-05-01 Crystal growing techniques

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1965474A GB1475189A (en) 1975-05-01 1975-05-01 Crystal growing techniques

Publications (1)

Publication Number Publication Date
GB1475189A true GB1475189A (en) 1977-06-01

Family

ID=10132957

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1965474A Expired GB1475189A (en) 1975-05-01 1975-05-01 Crystal growing techniques

Country Status (1)

Country Link
GB (1) GB1475189A (en)

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee