BE855611A - Dispositif de tirage d'un monocristal a partir d'un bain en fusion - Google Patents

Dispositif de tirage d'un monocristal a partir d'un bain en fusion

Info

Publication number
BE855611A
BE855611A BE1008189A BE1008189A BE855611A BE 855611 A BE855611 A BE 855611A BE 1008189 A BE1008189 A BE 1008189A BE 1008189 A BE1008189 A BE 1008189A BE 855611 A BE855611 A BE 855611A
Authority
BE
Belgium
Prior art keywords
monocristal
fusion bath
fusion
bath
Prior art date
Application number
BE1008189A
Other languages
English (en)
Original Assignee
Comp Generale Electricite
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 Comp Generale Electricite filed Critical Comp Generale Electricite
Publication of BE855611A publication Critical patent/BE855611A/fr

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
    • C30B15/00—Single-crystal growth by pulling from a melt, e.g. Czochralski method
    • C30B15/32—Seed holders, e.g. chucks
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D3/00—Control of position or direction
    • G05D3/12—Control of position or direction using feedback
    • G05D3/121—Control of position or direction using feedback using synchromachines (selsyns)
    • G05D3/122—Control of position or direction using feedback using synchromachines (selsyns) without modulation
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D3/00—Control of position or direction
    • G05D3/12—Control of position or direction using feedback
    • G05D3/14—Control of position or direction using feedback using an analogue comparing device
    • G05D3/1418—Control of position or direction using feedback using an analogue comparing device with ac amplifier chain
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D3/00—Control of position or direction
    • G05D3/12—Control of position or direction using feedback
    • G05D3/14—Control of position or direction using feedback using an analogue comparing device
    • G05D3/1436—Control of position or direction using feedback using an analogue comparing device with fine or coarse devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Chemical & Material Sciences (AREA)
  • Power Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
BE1008189A 1976-07-05 1977-06-13 Dispositif de tirage d'un monocristal a partir d'un bain en fusion BE855611A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7620442A FR2357302A1 (fr) 1976-07-05 1976-07-05 Dispositif de tirage d'un monocristal a partir d'un bain en fusion

Publications (1)

Publication Number Publication Date
BE855611A true BE855611A (fr) 1977-12-13

Family

ID=9175230

Family Applications (1)

Application Number Title Priority Date Filing Date
BE1008189A BE855611A (fr) 1976-07-05 1977-06-13 Dispositif de tirage d'un monocristal a partir d'un bain en fusion

Country Status (6)

Country Link
BE (1) BE855611A (fr)
DE (1) DE2729176C2 (fr)
FR (1) FR2357302A1 (fr)
GB (1) GB1533509A (fr)
IT (1) IT1080678B (fr)
NL (1) NL187170C (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5102933A (en) * 1990-05-22 1992-04-07 Witco Corporation Polyvinylchloride composition and stabilizers therefor
DE19758945B3 (de) * 1996-09-03 2012-09-06 Sumitomo Mitsubishi Silicon Corp. Vorrichtung zum Ziehen von Einkristallen
CN105541308B (zh) * 2016-01-23 2018-06-01 胡海波 一种高增透蓝宝石晶棒制造设备及制造工艺

Also Published As

Publication number Publication date
DE2729176C2 (de) 1986-01-16
FR2357302B1 (fr) 1978-12-15
NL7706926A (nl) 1978-01-09
IT1080678B (it) 1985-05-16
DE2729176A1 (de) 1978-01-19
NL187170C (nl) 1991-06-17
GB1533509A (en) 1978-11-29
NL187170B (nl) 1991-01-16
FR2357302A1 (fr) 1978-02-03

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Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: CIE GENERALE D ELECTRICITE

Effective date: 19920630