GB1308624A - Furnaces - Google Patents

Furnaces

Info

Publication number
GB1308624A
GB1308624A GB2446670A GB2446670A GB1308624A GB 1308624 A GB1308624 A GB 1308624A GB 2446670 A GB2446670 A GB 2446670A GB 2446670 A GB2446670 A GB 2446670A GB 1308624 A GB1308624 A GB 1308624A
Authority
GB
United Kingdom
Prior art keywords
region
plates
furnace
crystallization
refractory material
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
GB2446670A
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.)
Philips Electronics UK Ltd
Original Assignee
Philips Electronic and Associated Industries Ltd
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 Philips Electronic and Associated Industries Ltd filed Critical Philips Electronic and Associated Industries Ltd
Publication of GB1308624A publication Critical patent/GB1308624A/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
    • C30B11/003—Heating or cooling of the melt or the crystallised material

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

1308624 Crystallization furnace PHILIPS ELECTRONICS & ASSOCIATED INDUSTRIES Ltd 20 May 1970 [23 May 1969] 24466/70 Heading BIS [Also in Division F4] An electric furnace suitable for forming monocrystals of semiconductors, e.g. GaAs or GaP, comprises a plurality of superimposed annular plates 11, 12, 13, 19 of a refractory material, e.g. Al 2 O 3 , each provided with a heating resistor 14, 15, 16, 20 and which form a central channel C for the vessel containing the melt, there being annular disc 21 located between the two lowermost heating plates 13, 19, made of a porous refractory material, e.g. Al 2 O 3 , and having a central tubular portion 3, which may be of truncated cone shape, extending towards the lower plate 19. Plates 11-13 form a melting region and the region from the lower orifice in plate 19 to the output orifice 30 a crystallization region for material which is passed through the furnace in a sealed ampoule. The disc 19 allows heat control between the lower plate and those above it for establishing a large temperature gradient, e.g. 100‹C/cm, in the crystallizing region.
GB2446670A 1969-05-23 1970-05-20 Furnaces Expired GB1308624A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR6916925A FR2044527A5 (en) 1969-05-23 1969-05-23

Publications (1)

Publication Number Publication Date
GB1308624A true GB1308624A (en) 1973-02-21

Family

ID=9034537

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2446670A Expired GB1308624A (en) 1969-05-23 1970-05-20 Furnaces

Country Status (4)

Country Link
BE (1) BE750762A (en)
CH (1) CH535601A (en)
FR (1) FR2044527A5 (en)
GB (1) GB1308624A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107262684A (en) * 2017-07-27 2017-10-20 福建省瑞奥麦特轻金属有限责任公司 One kind continuously prepares aluminium alloy semi-solid slurry crucible heat insulation stove differential heating system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107262684A (en) * 2017-07-27 2017-10-20 福建省瑞奥麦特轻金属有限责任公司 One kind continuously prepares aluminium alloy semi-solid slurry crucible heat insulation stove differential heating system

Also Published As

Publication number Publication date
FR2044527A5 (en) 1971-02-19
DE2024575A1 (en) 1970-11-26
DE2024575B2 (en) 1977-06-30
CH535601A (en) 1973-04-15
BE750762A (en) 1970-11-23

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Legal Events

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