FR2076624A5 - Synthetic tubular pearls produced with a - verneuil double or treble tube - Google Patents

Synthetic tubular pearls produced with a - verneuil double or treble tube

Info

Publication number
FR2076624A5
FR2076624A5 FR7002110A FR7002110A FR2076624A5 FR 2076624 A5 FR2076624 A5 FR 2076624A5 FR 7002110 A FR7002110 A FR 7002110A FR 7002110 A FR7002110 A FR 7002110A FR 2076624 A5 FR2076624 A5 FR 2076624A5
Authority
FR
France
Prior art keywords
verneuil
double
synthetic tubular
pearls produced
treble
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
FR7002110A
Other languages
French (fr)
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.)
Shinkosha KK
Original Assignee
Shinkosha KK
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 Shinkosha KK filed Critical Shinkosha KK
Priority to FR7002110A priority Critical patent/FR2076624A5/en
Application granted granted Critical
Publication of FR2076624A5 publication Critical patent/FR2076624A5/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
    • C30B11/04—Single-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
    • C30B11/08—Single-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
    • C30B11/10—Solid or liquid components, e.g. Verneuil method

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Farming Of Fish And Shellfish (AREA)

Abstract

Material is added in such a way that it does not drop into the centre of a growing pearl while the high-temp. part of a flame acts onto the material in the form of a ring. Specifically, a tubular crystal with a pre-determined inner and outer diameter is used as nucleus.
FR7002110A 1970-01-21 1970-01-21 Synthetic tubular pearls produced with a - verneuil double or treble tube Expired FR2076624A5 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7002110A FR2076624A5 (en) 1970-01-21 1970-01-21 Synthetic tubular pearls produced with a - verneuil double or treble tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7002110A FR2076624A5 (en) 1970-01-21 1970-01-21 Synthetic tubular pearls produced with a - verneuil double or treble tube

Publications (1)

Publication Number Publication Date
FR2076624A5 true FR2076624A5 (en) 1971-10-15

Family

ID=9049386

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7002110A Expired FR2076624A5 (en) 1970-01-21 1970-01-21 Synthetic tubular pearls produced with a - verneuil double or treble tube

Country Status (1)

Country Link
FR (1) FR2076624A5 (en)

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Legal Events

Date Code Title Description
ST Notification of lapse