GB1239468A - - Google Patents

Info

Publication number
GB1239468A
GB1239468A GB1239468DA GB1239468A GB 1239468 A GB1239468 A GB 1239468A GB 1239468D A GB1239468D A GB 1239468DA GB 1239468 A GB1239468 A GB 1239468A
Authority
GB
United Kingdom
Prior art keywords
carbon
nov
refractory metal
metals
metal carbides
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
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 filed Critical
Publication of GB1239468A publication Critical patent/GB1239468A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B32/00—Carbon; Compounds thereof
    • C01B32/90—Carbides
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2002/00—Crystal-structural characteristics
    • C01P2002/50—Solid solutions
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2002/00—Crystal-structural characteristics
    • C01P2002/70—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data
    • C01P2002/77—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data by unit-cell parameters, atom positions or structure diagrams
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/62—Submicrometer sized, i.e. from 0.1-1 micrometer
    • 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
    • C01P2006/12—Surface area
    • 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
    • C01P2006/80—Compositional purity

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Carbon And Carbon Compounds (AREA)

Abstract

1,239,468. Refractory metal carbides. UGINECARBONE. 15 Nov., 1968 [16 Nov., 1967], No. 54374/68. Heading C1A. Refractory metal carbides in fine powder form are prepared by suspending carbon in an aqueous solution of pH #7 of at least one salt, preferably the chloride, of at least one of the metals, increasing the pH of the solution by the addition of, for example, concentrated ammonia in order to completely precipitate the metal hydroxides, washing and roasting the resultant gel so that it contains only oxides and carbon, and reacting these together by heating at a temperature of from 1600‹ to 2000‹ C. under vacuum or under a reducing atmosphere. Specified metals are Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W, U, Th and the lanthanides. The carbon is preferably added in the form of lampblack or acetylene black and the final products advantageously have a free carbon content of 1% maximum, a mean particle size of less than 2 Á, and a specific BET surface area of between 1 and 3 m.<SP>2</SP>/g.
GB1239468D 1967-11-16 1968-11-15 Expired GB1239468A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR128415 1967-11-16

Publications (1)

Publication Number Publication Date
GB1239468A true GB1239468A (en) 1971-07-14

Family

ID=8641774

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1239468D Expired GB1239468A (en) 1967-11-16 1968-11-15

Country Status (8)

Country Link
AT (1) AT285532B (en)
BE (1) BE723980A (en)
CH (1) CH504915A (en)
DE (1) DE1808625A1 (en)
FR (1) FR1553859A (en)
GB (1) GB1239468A (en)
LU (1) LU57318A1 (en)
NL (1) NL6816151A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NZ195673A (en) * 1979-12-26 1983-09-30 Union Carbide Corp Manufacture of vanadium carbide
US4528119A (en) * 1984-06-28 1985-07-09 Eltech Systems Corporation Metal borides, carbides, nitrides, silicides, oxide materials and their method of preparation

Also Published As

Publication number Publication date
LU57318A1 (en) 1969-04-21
CH504915A (en) 1971-03-31
DE1808625A1 (en) 1971-02-18
FR1553859A (en) 1969-01-17
AT285532B (en) 1970-10-27
BE723980A (en) 1969-05-02
NL6816151A (en) 1969-05-20

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Legal Events

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