GB1488362A - Preparation of monotungsten carbide - Google Patents
Preparation of monotungsten carbideInfo
- Publication number
- GB1488362A GB1488362A GB42479/74A GB4247974A GB1488362A GB 1488362 A GB1488362 A GB 1488362A GB 42479/74 A GB42479/74 A GB 42479/74A GB 4247974 A GB4247974 A GB 4247974A GB 1488362 A GB1488362 A GB 1488362A
- Authority
- GB
- United Kingdom
- Prior art keywords
- carbide
- tungsten
- product
- carbon
- reaction zone
- 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
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
- 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
- C01P2002/72—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data by d-values or two theta-values, e.g. as X-ray diagram
-
- 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
- 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
- C01P2006/80—Compositional purity
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Nanotechnology (AREA)
- Inorganic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Composite Materials (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Materials Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
1488362 Tungsten carbide PPG INDUSTRIES Inc 1 Oct 1974 42479/74 Heading ClA Monotungsten carbide is prepared by vapor phase reaction of a tungsten compound volatile at reaction temperatures used with a vaporous source of carbon at from 1500‹ to 2500‹ C. in a reaction zone, the process comprising introducing into a reaction zone the volatile tungsten compound and the source of carbon in amounts sufficient to provide in the product at least one atom of carbon for each atom of tungsten introduced into the reaction zone and the temperature of 1500‹ to 2500‹ C. being attained by means of a plasma generator, withdrawing from the reaction zone solid tungsten carbide (as defined) product having ditungsten carbide as its principal component, and calcining the solid tungsten carbide (as defined) product in an inert atmosphere at from 500‹ C. to 1500‹ C, and for a time sufficient to produce monotungsten carbide as the principal component of the tungsten carbide product. The volatile tungsten compound is preferably a halide, e.g. its hexachloride, and the source of carbon selected from hydrocarbons or halogenated hydrocarbons.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB42479/74A GB1488362A (en) | 1974-10-01 | 1974-10-01 | Preparation of monotungsten carbide |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB42479/74A GB1488362A (en) | 1974-10-01 | 1974-10-01 | Preparation of monotungsten carbide |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1488362A true GB1488362A (en) | 1977-10-12 |
Family
ID=10424623
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB42479/74A Expired GB1488362A (en) | 1974-10-01 | 1974-10-01 | Preparation of monotungsten carbide |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1488362A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1995004703A1 (en) * | 1993-08-09 | 1995-02-16 | The Dow Chemical Company | Method for making submicrometer carbides, submicrometer solid sollution carbides, and the material resulting therefrom |
-
1974
- 1974-10-01 GB GB42479/74A patent/GB1488362A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1995004703A1 (en) * | 1993-08-09 | 1995-02-16 | The Dow Chemical Company | Method for making submicrometer carbides, submicrometer solid sollution carbides, and the material resulting therefrom |
CN1045190C (en) * | 1993-08-09 | 1999-09-22 | Omg美国公司 | Method for making submicrometer carbides, submicrometer solid sollution carbides, and the material resulting therefrom |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |