GB1489346A - Production of a form of alumina whiskers - Google Patents

Production of a form of alumina whiskers

Info

Publication number
GB1489346A
GB1489346A GB11995/74A GB1199574A GB1489346A GB 1489346 A GB1489346 A GB 1489346A GB 11995/74 A GB11995/74 A GB 11995/74A GB 1199574 A GB1199574 A GB 1199574A GB 1489346 A GB1489346 A GB 1489346A
Authority
GB
United Kingdom
Prior art keywords
aluminium
reaction zone
whiskers
stream
reaction
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
GB11995/74A
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.)
Federal Mogul Bradford Ltd
Original Assignee
Hepworth and Grandage 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 Hepworth and Grandage Ltd filed Critical Hepworth and Grandage Ltd
Priority to GB11995/74A priority Critical patent/GB1489346A/en
Priority to SE7502996A priority patent/SE406316B/en
Priority to JP50032124A priority patent/JPS5748487B2/ja
Priority to IT46833/75A priority patent/IT1041714B/en
Priority to FR7508353A priority patent/FR2264898B1/fr
Priority to DE2511650A priority patent/DE2511650C2/en
Publication of GB1489346A publication Critical patent/GB1489346A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F7/00—Compounds of aluminium
    • C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
    • 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
    • C30B25/00—Single-crystal growth by chemical reaction of reactive gases, e.g. chemical vapour-deposition growth
    • C30B25/005—Growth of whiskers or needles
    • 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
    • C30B29/10—Inorganic compounds or compositions
    • C30B29/16—Oxides
    • C30B29/20—Aluminium oxides
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/10—Particle morphology extending in one dimension, e.g. needle-like
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/54—Particles characterised by their aspect ratio, i.e. the ratio of sizes in the longest to the shortest dimension
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/10—Solid density

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Chemical Vapour Deposition (AREA)

Abstract

1489346 Aluminium whiskers HEPWORTH & GRANDAGE Ltd 18 March 1975 [18 March 1974] 11995/74 Heading ClA Whiskers of Al 2 O 3 are prepared by (a) contacting an intimate mixture of aluminabearing material and carbon with a stream of a gaseous aluminium trihalide in a first reaction zone maintained at an elevated temperature, in which a reaction occurs to form an aluminium monohalide and CO, and (b) transporting the gaseous products comprising the monohalide and CO to a second reaction zone at a lower temperature, whereupon the reverse reaction 3AlX + 3CO#AlX 3 + 3C + Al 2 O 3 occurs, with formation of alumina whiskers from the Al 2 O 3 - supersaturated gas stream. The aluminium trihalide may be prepared by the action of the gaseous halogen on molten aluminium metal, the product (carried in a stream of a Group O carrier) being purified by passage over a heated but unmelted aluminium metal. Preferably, the temperature in the first reaction zone lies between 1400‹ and 1800‹ C., while that of the second reaction zone is 200-400‹ C. lower, and less than 1400‹ C.
GB11995/74A 1974-03-18 1974-03-18 Production of a form of alumina whiskers Expired GB1489346A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
GB11995/74A GB1489346A (en) 1974-03-18 1974-03-18 Production of a form of alumina whiskers
SE7502996A SE406316B (en) 1974-03-18 1975-03-17 WAY TO MANUFACTURE ALUMINUM OXIDWHISKERS
JP50032124A JPS5748487B2 (en) 1974-03-18 1975-03-17
IT46833/75A IT1041714B (en) 1974-03-18 1975-03-18 PRODUCTION OF A FORM OF FIBERS OR ALUMINUM BARS
FR7508353A FR2264898B1 (en) 1974-03-18 1975-03-18
DE2511650A DE2511650C2 (en) 1974-03-18 1975-03-18 Process for making alumina whiskers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB11995/74A GB1489346A (en) 1974-03-18 1974-03-18 Production of a form of alumina whiskers

Publications (1)

Publication Number Publication Date
GB1489346A true GB1489346A (en) 1977-10-19

Family

ID=9996506

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11995/74A Expired GB1489346A (en) 1974-03-18 1974-03-18 Production of a form of alumina whiskers

Country Status (6)

Country Link
JP (1) JPS5748487B2 (en)
DE (1) DE2511650C2 (en)
FR (1) FR2264898B1 (en)
GB (1) GB1489346A (en)
IT (1) IT1041714B (en)
SE (1) SE406316B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0131610B1 (en) * 1983-01-18 1988-04-27 Ae Plc The reinforcement of articles of cast metal or metal alloy
US4995444A (en) * 1987-03-02 1991-02-26 Battelle Memorial Institute Method for producing metal or alloy casting composites reinforced with fibrous or particulate materials
EP2599749A1 (en) 2011-11-30 2013-06-05 Neoker, S.L Method for the purification of alpha-alumina fibers
CN114606571A (en) * 2022-04-02 2022-06-10 陕西理工大学 Alumina whisker prepared from blast furnace slag and preparation method thereof

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6223912A (en) * 1985-07-23 1987-01-31 Showa Denko Kk Production of fine metallic powder

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0131610B1 (en) * 1983-01-18 1988-04-27 Ae Plc The reinforcement of articles of cast metal or metal alloy
US4995444A (en) * 1987-03-02 1991-02-26 Battelle Memorial Institute Method for producing metal or alloy casting composites reinforced with fibrous or particulate materials
EP2599749A1 (en) 2011-11-30 2013-06-05 Neoker, S.L Method for the purification of alpha-alumina fibers
WO2013079620A1 (en) 2011-11-30 2013-06-06 Neoker, S.L. Method for the purification of alpha-alumina fibers
CN114606571A (en) * 2022-04-02 2022-06-10 陕西理工大学 Alumina whisker prepared from blast furnace slag and preparation method thereof

Also Published As

Publication number Publication date
DE2511650C2 (en) 1984-05-10
IT1041714B (en) 1980-01-10
SE7502996L (en) 1975-09-19
FR2264898B1 (en) 1978-12-29
JPS50127896A (en) 1975-10-08
SE406316B (en) 1979-02-05
FR2264898A1 (en) 1975-10-17
JPS5748487B2 (en) 1982-10-16
DE2511650A1 (en) 1975-09-25

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee