IT1080678B - Dispositivo di estrazione di un monocristallo a partiere da un bagno in fusione - Google Patents

Dispositivo di estrazione di un monocristallo a partiere da un bagno in fusione

Info

Publication number
IT1080678B
IT1080678B IT24704/77A IT2470477A IT1080678B IT 1080678 B IT1080678 B IT 1080678B IT 24704/77 A IT24704/77 A IT 24704/77A IT 2470477 A IT2470477 A IT 2470477A IT 1080678 B IT1080678 B IT 1080678B
Authority
IT
Italy
Prior art keywords
monocrystal
extraction device
melting bath
bath
melting
Prior art date
Application number
IT24704/77A
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
Application granted granted Critical
Publication of IT1080678B publication Critical patent/IT1080678B/it

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)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Power Engineering (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
IT24704/77A 1976-07-05 1977-06-15 Dispositivo di estrazione di un monocristallo a partiere da un bagno in fusione IT1080678B (it)

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
IT1080678B true IT1080678B (it) 1985-05-16

Family

ID=9175230

Family Applications (1)

Application Number Title Priority Date Filing Date
IT24704/77A IT1080678B (it) 1976-07-05 1977-06-15 Dispositivo di estrazione di un monocristallo a partiere da un bagno in fusione

Country Status (6)

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

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
NL187170C (nl) 1991-06-17
DE2729176A1 (de) 1978-01-19
NL7706926A (nl) 1978-01-09
DE2729176C2 (de) 1986-01-16
FR2357302A1 (fr) 1978-02-03
BE855611A (fr) 1977-12-13
NL187170B (nl) 1991-01-16
FR2357302B1 (it) 1978-12-15
GB1533509A (en) 1978-11-29

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