FR2294133A1 - Finely divided tungsten carbide prepn. - by reacting tungsten oxide and carbon monoxide below sintering or agglomerating temps (NL150676) - Google Patents

Finely divided tungsten carbide prepn. - by reacting tungsten oxide and carbon monoxide below sintering or agglomerating temps (NL150676)

Info

Publication number
FR2294133A1
FR2294133A1 FR7537554A FR7537554A FR2294133A1 FR 2294133 A1 FR2294133 A1 FR 2294133A1 FR 7537554 A FR7537554 A FR 7537554A FR 7537554 A FR7537554 A FR 7537554A FR 2294133 A1 FR2294133 A1 FR 2294133A1
Authority
FR
France
Prior art keywords
prepn
temps
agglomerating
reacting
carbon monoxide
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.)
Withdrawn
Application number
FR7537554A
Other languages
French (fr)
Inventor
Edward Joseph Felten
Paul Stonehart
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.)
Raytheon Technologies Corp
Original Assignee
United Technologies Corp
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 United Technologies Corp filed Critical United Technologies Corp
Publication of FR2294133A1 publication Critical patent/FR2294133A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
    • 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
    • C01B32/914—Carbides of single elements
    • C01B32/949—Tungsten or molybdenum carbides
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K3/00—Materials not provided for elsewhere
    • C09K3/14—Anti-slip materials; Abrasives
    • C09K3/1409—Abrasive particles per se
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
    • H01M4/90—Selection of catalytic material
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2002/00—Crystal-structural characteristics
    • C01P2002/60—Compounds characterised by their crystallite size
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/01—Particle morphology depicted by an image
    • C01P2004/02—Particle morphology depicted by an image obtained by optical microscopy
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/01—Particle morphology depicted by an image
    • C01P2004/03—Particle morphology depicted by an image obtained by SEM
    • 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
    • C01P2004/64—Nanometer sized, i.e. from 1-100 nanometer
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/50—Fuel cells

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Nanotechnology (AREA)
  • Electrochemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Composite Materials (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Carbon And Carbon Compounds (AREA)

Abstract

Finely-divided WC is prepd. by reacting WO3, with CO. The CO is pref. passed over WO3 particles. Reaction mixt. is heated to a temp. at which CO and WO3 react and WC is formed, but which is below temp. causing caking or sintering together of W-contg. matls. WC is used as an abrasive, in powder metallurgy, and can be re-converted to WO3 of smaller particle size and higher active surface than starting matl. by heating in air at a low temp. WC obtd. has small particle size, pref. 100 angstroms and active surface is approx. =20 m2/g.
FR7537554A 1974-12-11 1975-12-09 Finely divided tungsten carbide prepn. - by reacting tungsten oxide and carbon monoxide below sintering or agglomerating temps (NL150676) Withdrawn FR2294133A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US53163474A 1974-12-11 1974-12-11

Publications (1)

Publication Number Publication Date
FR2294133A1 true FR2294133A1 (en) 1976-07-09

Family

ID=24118433

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7537554A Withdrawn FR2294133A1 (en) 1974-12-11 1975-12-09 Finely divided tungsten carbide prepn. - by reacting tungsten oxide and carbon monoxide below sintering or agglomerating temps (NL150676)

Country Status (7)

Country Link
JP (1) JPS5183900A (en)
AU (1) AU8655875A (en)
DE (1) DE2553373A1 (en)
FR (1) FR2294133A1 (en)
IT (1) IT1054433B (en)
NL (1) NL7514033A (en)
SE (1) SE7513490L (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000029325A1 (en) * 1998-11-13 2000-05-25 H.C. Starck Gmbh & Co. Kg Method for producing wolfram carbides by gas-phase carburetion

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2713308C2 (en) * 1977-03-25 1979-04-19 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Process for making a tungsten carbide catalyst
AT410939B (en) * 2000-12-20 2003-08-25 Treibacher Ind Ag METHOD FOR THE PRODUCTION OF TUNGSTEN CARBIDE
JP2018035020A (en) * 2016-08-30 2018-03-08 住友電気工業株式会社 Aqueous solution composition and method for producing the same, oxide powder and method for producing the same, carbide powder and method for producing the same, and cemented carbide and method for producing the same
CN112079359A (en) * 2020-07-31 2020-12-15 株洲硬质合金集团有限公司 Preparation method of high-uniformity nano WC powder

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000029325A1 (en) * 1998-11-13 2000-05-25 H.C. Starck Gmbh & Co. Kg Method for producing wolfram carbides by gas-phase carburetion
US7118635B1 (en) 1998-11-13 2006-10-10 H. C. Starck Gmbh & Co. Kg Method for producing tungsten carbides by gas-phase carburization
CZ297760B6 (en) * 1998-11-13 2007-03-21 H. C. Starck Gmbh & Co. Kg Process for producing tungsten carbides by carburizing in gaseous phase

Also Published As

Publication number Publication date
SE7513490L (en) 1976-06-14
DE2553373A1 (en) 1976-06-16
AU8655875A (en) 1977-05-19
NL7514033A (en) 1976-06-15
JPS5183900A (en) 1976-07-22
IT1054433B (en) 1981-11-10

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Legal Events

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ST Notification of lapse