GB376266A - Hard metal alloys - Google Patents
Hard metal alloysInfo
- Publication number
- GB376266A GB376266A GB9835/31A GB983531A GB376266A GB 376266 A GB376266 A GB 376266A GB 9835/31 A GB9835/31 A GB 9835/31A GB 983531 A GB983531 A GB 983531A GB 376266 A GB376266 A GB 376266A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tantalum
- tungsten
- per cent
- carbides
- carbon
- 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
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
- C22C29/02—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides
- C22C29/06—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
Tungsten and tantalum carbides may be made by heating to about 2000 DEG C. powdered tungsten or tantalum, or mixtures thereof, or their oxides, with lampblack or charcoal which has been preheated to remove impurities and gases. The proportions are preferably about 3,1 or 6,17 per cent of carbon to 96,9 or 93,83 per cent of tungsten, and 6,2 per cent of carbon to 93,8 per cent of tantalum. The resulting carbides are ground and degasified.ALSO:Hard alloys consist of an auxiliary metal, preferably one or more of the metals iron, nickel, and cobalt, and carbides of tungsten and tantalum, and contain no appreciable amount of free tungsten or tantalum. Carbides of tungsten and tantalum may be replaced by carbides of molybdenum and niobium. Tungsten and tantalum carbides may be made by heating to about 2000 DEG C. a mixture of powdered tungsten or tantalum, or mixtures thereof, or their oxides, with lampblack or charcoal which has been preheated to remove impurities and gases. The proportions are preferably about 3,1 or 6,17 per cent of carbon to 96,9 or 93,83 per cent of tungsten, and 6,2 per cent of carbon to 93,8 per cent of tantalum. The resulting carbides are ground and degasified and mixed with 5-9 per cent of nickel, which may be added in the form of hydrogen-reduced powder in presence of a liquid hydrocarbon. The mixture is pressed and heated in a reducing atmosphere.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US376266XA | 1930-11-28 | 1930-11-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB376266A true GB376266A (en) | 1932-07-01 |
Family
ID=21895367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9835/31A Expired GB376266A (en) | 1930-11-28 | 1931-04-01 | Hard metal alloys |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB376266A (en) |
-
1931
- 1931-04-01 GB GB9835/31A patent/GB376266A/en not_active Expired
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